VI. AREA OF OPERATION: AIRPORT AND SEAPLANE BASE OPERATIONS NOTE: The examiner must select at least one TASK. Table of Contents PTS Standards ................................................................................................................................................................3 RADIO COMMUNICATIONS AND ATC LIGHT SIGNALS (ASEL and ASES) ........................................................................5 TRAFFIC PATTERNS (ASEL and ASES) .............................................................................................................................9 AIRPORT/SEAPLANE BASE, RUNWAY AND TAXIWAY SIGNS, MARKINGS, AND LIGHTING (ASEL and ASES) ................15 *Only the ASEL sections are applicable to the CFI ASEL rating. Pg. 6-1 Pg. 6-2 PTS Standards VI. AREA OF OPERATION: AIRPORT AND SEAPLANE BASE OPERATIONS NOTE: The examiner must select at least one TASK. A. TASK: RADIO COMMUNICATIONS AND ATC LIGHT SIGNALS (ASEL and ASES) REFERENCES: FAA-H-8083-3, FAA-H-8083-25; FAA-S-8081-12, FAA-S-8081-14; AIM. Objective. To determine that the applicant: 1. Exhibits instructional knowledge of the elements of radio communications and ATC light signals by describing— a. selection and use of appropriate radio frequencies. b. recommended procedure and phraseology for radio communications. c. Receipt of, acknowledgement of, and compliance with ATC clearances and instructions. d. interpretation of, and compliance with, ATC light signals. 2. Exhibits instructional knowledge of common errors related to radio communications and ATC light signals by describing— a. use of improper frequencies. b. improper procedure and phraseology when using radio communications. c. failure to acknowledge, or properly comply with, ATC clearances and instructions. d. failure to understand, or to properly comply with, ATC light signals. 3. Demonstrates and simultaneously explains radio communication procedures from an instructional standpoint. 4. Analyzes and corrects simulated common errors related to radio communications and ATC light signals. B. TASK: TRAFFIC PATTERNS (ASEL and ASES) REFERENCES: FAA-H-8083-3, FAA-H-8083-25, AC 90-42, AC 90-66; FAA-S-8081-12, FAA-S-8081-14; AIM. Objective. To determine that the applicant: 1. Exhibits instructional knowledge of the elements of traffic patterns by describing— a. operations at airports and seaplane bases with and without operating control towers. b. adherence to traffic pattern procedures, instructions, and rules. c. how to maintain proper spacing from other traffic. d. how to maintain the desired ground track. e. wind shear and wake turbulence avoidance procedures. f. orientation with the runway or landing area in use. g. how to establish a final approach at an appropriate distance from the runway or landing area. h. use of checklist. 2. Exhibits instructional knowledge of common errors related to traffic patterns by describing— a. failure to comply with traffic pattern instructions, procedures, and rules. b. improper correction for wind drift. c. inadequate spacing from other traffic. d. poor altitude or airspeed control. 3. Demonstrates and simultaneously explains traffic patterns from an instructional standpoint. 4. Analyzes and corrects simulated common errors related to traffic patterns. Pg. 6-3 C. TASK: AIRPORT/SEAPLANE BASE, RUNWAY AND TAXIWAY SIGNS, MARKINGS, AND LIGHTING (ASEL and ASES) REFERENCES: FAA-H-8083-23, FAA-H-8083-25; FAA-S-8081-12, FAA-S-8081-14; AIM; AC 150/5340-1, AC 150/534018. Objective. To determine that the applicant: 1. Exhibits instructional knowledge of the elements of airport/seaplane base runway and taxiway signs, markings, and lighting by describing— a. identification and proper interpretation of airport/seaplane base, runway and taxiway signs and markings with emphasis on runway incursion avoidance. b. identification and proper interpretation of airport/seaplane base, runway and taxiway lighting with emphasis on runway incursion avoidance. 2. Exhibits instructional knowledge of common errors related to airport/seaplane base, runway and taxiway signs, markings, and lighting by describing— a. failure to comply with airport/seaplane base, runway and taxiway signs and markings. b. failure to comply with airport/seaplane base, runway and taxiway lighting. c. failure to use proper runway incursion avoidance procedures. 3. Demonstrates and simultaneously explains airport/seaplane base, runway and taxiway signs, markings, and lighting from an instructional standpoint. 4. Analyzes and corrects simulated common errors related to airport/seaplane base, runway and taxiway signs, markings, and lighting. Pg. 6-4 RADIO COMMUNICATIONS AND ATC LIGHT SIGNALS (ASEL and ASES) Objective: To familiarize the student with radio communications procedures. To familiarize the student with ATC light-gun signals and their meanings. Note: Before this lesson the student should read the AIM’s Pilot/Controller Glossary and AIM Chapter 4. Review communications requirements for different airspace areas Content: Radio License Radio equipment o VHF 720: 118.0 – 135.975 KHz o VHF 760: 118.0 – 136.975 KHz o Line-of-sight Discuss Phonetic alphabet AIM C. 4-2-7 Discuss communication examples AIM C. 4 Discuss hand signals AIM C. 4-2-25 Discuss Light-gun signals Discuss lost communication procedures appropriate to student level Things to Avoid (Common Errors): Use of improper frequencies Improper procedure and phraseology for radio communications Failure to acknowledge or properly comply with, ATC clearances and instructions Failure to understand or properly comply with ATC light signals References: Pilot’s Handbook of Aeronautical Knowledge – Chapter 12 Completion Standards: The lesson is complete when the instructor determines that the student has adequate knowledge of radio communications and ATC light-gun signals by giving an oral or written exam. Instructor Notes: Selection and Use of Appropriate Frequencies o Preflight Planning Always plan ahead as to frequencies needed Look up the frequencies of all the facilities you might use and/or need during the flight This information can be found in the AFD, Sectional Charts, etc. Ground is always 121 point something Put all this information in your Nav Log, preferably in the order you will use it to make things easy Pg. 6-5 o During Flight frequencies may need to be found - keep organized and find them before they’re needed Know who you are calling o The AFD contains all pertinent frequencies within/around the airport(s) you are operating in Weather, Tower/CTAF, Clearance Del, Ground, Unicom, Navaids, FSS, Approach/Departure o Charts provide frequencies as you navigate Communications Boxes (FSS) Airport data lists tower/CTAF, Unicom, weather frequencies VOR frequencies are shown in blue outlined boxes HIWAS, TWEB, ASOS/AWOS available on some VORs Class B, C, TRSA, and some radar approach frequencies are provided below Tower frequencies/info o After in contact with controllers, frequencies will be provided to reach further controllers o CE - Use of improper frequencies Caused by inadequate planning, misreading frequencies, or mistuning the radio Double check and read out loud frequencies also repeat frequencies when advised to change Monitor the frequency before transmitting Procedure and Phraseology for Radio Communications o Understanding is the single most important thought in pilot-controller communications It is essential that pilots acknowledge each radio call with ATC with the appropriate aircraft call sign Brevity is important, but if necessary use whatever words will get your message across Good phraseology enhances safety and is the mark of a professional pilot Pilot/Controller Glossary is very helpful in learning what certain words/phrases mean (AIM) o Radio Technique LISTEN before you transmit THINK before transmitting - Know what you want to say before you say it (write it down if needed) After transmitting, wait a few seconds before calling again (The controller may be busy) Be alert to the sound/lack of sounds in the receiver Check your volume, frequency, and make sure the microphone isn’t stuck on transmit Be sure you are within the performance range of your equipment and the ground station equipment Remember higher altitudes increase the range of VHF “line of sight” communications o Radio calls can be broken down into: Whom you are calling Who you are Where you are What you want to do o CE - Improper procedure and phraseology for radio communications Think before you transmit and understand the controller may be busy Tailor your calls to match the controller’s workload Pg. 6-6 ATC Clearances and Instructions o Acknowledge all ATC clearances by repeating key points followed by your call sign You must read back all hold short instructions Always repeat altitudes and headings When advised to change frequencies acknowledge the instruction and change ASAP o If a clearance is blocked or not understood, do not guess/ignore, ask the controller to “Say Again” o Once you, the PIC, obtain an ATC clearance you cannot deviate from it unless in an emergency (91.123) If you cannot accept a clearance from ATC advise them of the reason and obtain a new clearance o The PIC is directly responsible for, and the final authority to the operation of the airplane Obtain proper clarification on any clearance not understood or that would create a bad situation o CE – Failure to acknowledge or properly comply with, ATC clearances and instructions Ask the controller to repeat if you did not understand the message Learn to divide attention in order to properly hear and comply with all messages ATC Light Signals o Arriving Aircraft Transmitter Failure - Receive no response to calls, and receive calls but none directed to you Determine the direction and flow of aircraft, enter the pattern and look for light signals Acknowledge light signals by rocking wings during the day and flashing lights at night After landing, call the tower to advise them of the situation Receiver Failure - Receiving no calls on tower/ATIS frequencies Transmit to the tower your position, situation, intention to land Use the same procedures as above o Departing Aircraft Attempt to fix any radio failure before leaving, if it can’t be fixed call tower by phone and request to depart without two way communications If authorized, you will get departure info and requested to monitor tower/watch for light signals During daylight, acknowledge transmissions/ signals by promptly executing the action requested Rock wings/blink lights as well If the radio fails after departing the ramp, watch for light signals/monitor ground and return o CE - Failure to understand or properly comply with ATC light signals Know the light signals and their meanings Practice light signals if possible Pg. 6-7 Pg. 6-8 TRAFFIC PATTERNS (ASEL and ASES) Objective: To familiarize the student with operation in an airport traffic pattern. To familiarize the student with standard and right traffic patterns. Content: Altitude Entry Traffic pattern indicators Turn to crosswind within 300′ of pattern altitude Pattern legs Things to Avoid (Common Errors): Failure to comply with traffic pattern instructions, procedures, and rules Improper correction for wind drift Inadequate spacing from other traffic Poor altitude or airspeed control Diagrams: Pg. 6-9 Pg. 6-10 References: Airplane Flying Handbook - Chapter 7 Completion Standards: The lesson is complete when the instructor determines that the student has adequate knowledge of and is able to fly proper traffic patterns by giving an oral or written exam and observing the student during each flight. Instructor Notes: The Pattern o Controlled - The pilot receives a clearance to approach/depart and pertinent pattern info o Uncontrolled - It’s up to the pilot to determine traffic direction, and comply with the appropriate rules o If familiar with the basic rectangular pattern, it approaches/departures will be easy at most airports o Standard Traffic Pattern Usually 1,000’ AGL (Common Alt is the key factor in minimizing collisions at uncontrolled airports) CE - Poor altitude or airspeed control Know the AS required at certain points in the pattern (max is 200 knots in Class D) Constantly checking the instruments to ensure AS and Alt and make fine, controlled adjustments All turns are made to the left unless otherwise noted (AFD, Controller, Markings, etc) Turns should not be banked more than 30o (Do Not use rudder to help the turn along) Downwind - Parallel to the runway of intended landing (opposite landing direction) Approximately ½ to 1 mile from the runway At pattern altitude until abeam the approach end of the runway Continues to a point 45o from the intended landing point Base - Perpendicular to the runway and transitions between downwind and final The ground track of the airplane should be perpendicular to the extended centerline Final - The descending approach to the runway Upwind - Flown parallel to the landing runway, but in the same direction to the landing direction Continues past a point abeam the departure end of the runway Transitional part of the pattern when a go-around is initiated Crosswind - horizontally perp. to the runway centerline and transitions from up to downwind Departure - The straight course aligned with, and leading from, the T/O runway Continue climbing straight out and if remaining in the pattern, turn to the crosswind leg beyond the departure end of the runway within 300’ of pattern altitude If departing, continue straight out or exit with a 45o turn to the left (or right in a right pattern) Pg. 6-11 o Maintaining the Desired Ground Track The airplane will have to be crabbed into the wind in order to maintain a straight ground track The airplane can be kept at a specific position in relation to the runway with visual references Place the runway centerline on a point on the leading edge of the wing/ Use landmarks to establish proper legs of the pattern CE - Improper correction for wind drift Keep the pattern a rectangle, always crabbing into the wind as necessary Controlled Field o The pilot receives, by radio, a clearance to approach/depart as well as pertinent info about the pattern o ATC will specify pattern entry and departure procedures (Where/how to enter and leave) o During the pattern the controller may adjust your pattern (Speed, Legs, 360o turn, S turn) o CE - Failure to comply with traffic pattern instructions, procedures, and rules Know the rules and ensure you understand radio communications and instructions Learn to divide attention in the pattern between flying, collision avoidance, checklists, and comms Uncontrolled Field o Communication There are 2 ways to communicate intentions and obtain airport/traffic info at an uncontrolled field Communicating with an FSS providing advisories o The FSS provides wind info, runway in use, altimeter setting, known traffic, NOTAMs, etc. o Inbound aircraft should initiate contact approx 10 miles out with Alt, AC Type, and Location o Departing should contact as practicable with Tail #, Type flight, destination, services desired o Or by making a self-announced broadcast on the CTAF (found in the AFD and on sectionals) o Arriving Observe other aircraft already in the pattern and conform to the traffic pattern in use If other aircraft are not in the pattern, use traffic indicators and wind to determine runway info o L shaped indicators displayed with a segmented circle (short part of L shows turn direction) o Check these indicators well above pattern altitude o Pattern direction can also be determined in the AFD and on sectional charts Once pattern direction is determined, proceed to a point well clear of the pattern before descending Enter in level flight, at altitude, at a 45o angle to the downwind, abeam the runway midpoint Entry while descending creates collision hazards and should be avoided Maintain pattern altitude until abeam the approach end of the landing runway or downwind leg o Departing - As discussed above Pg. 6-12 o CE - Failure to comply with traffic pattern instructions, procedures, and rules Know the rules and ensure you understand radio communications and instructions Learn to divide attention in the pattern between flying, collision avoidance, checklists, and comms Orientation to the Runway o Know which runway is in use and remain oriented with the active runway Plan to enter properly visualizing your position in relation to the runway on the HI Confirm the runway number with the HI during all pattern legs Downwind - Reciprocal; Base - 90o off (in the direction of the pattern); Final Runway Number Checklists o Prior to entering/upon entering the pattern complete the Before-Landing Checklist o Run through the checklist again on final to ensure everything is complete Establishing Final Approach o The base leg will be adjusted depending on wind conditions The stronger the wind, the closer the base leg because the decreased GS will shorten the approach o The turn to final should be no closer than ¼ mile at an altitude appropriate for the glide slope selected o 3o glide slope, means we should be 300’ AGL for every mile from the runway Maintaining Proper Spacing o In the pattern, you must observe other traffic and maintain separation (Know where other aircraft are) o When turning base and another plane is on final, turn once abeam/past the other aircraft o At a controlled field, the controller may request/advise certain maneuvers to provide spacing o YOU are responsible for seeing and avoiding whether at a controlled or uncontrolled field o CE - Inadequate spacing from other traffic Don’t fly faster than an airplane in-front of you or turn too early following another plane Wind Shear and Wake Turbulence o Wind Shear Best method in dealing with wind shear is to avoid it (Don’t fly in or near thunderstorms) If there is a possibility of WS, during the approach, use more power, a higher AS, stay as high as feasible until necessary to land, and go-around at the first sign of an unexpected AS/pitch change o Wake Turbulence Landing: Land prior to a jet’s T/O point or stay above and land beyond another jet’s landing point T/O: T/O prior to and stay above another jet’s T/O point and T/O after another jet’s landing point Pg. 6-13 Pg. 6-14 AIRPORT/SEAPLANE BASE, RUNWAY AND TAXIWAY SIGNS, MARKINGS, AND LIGHTING (ASEL and ASES) Objective: To familiarize the student with the various markings and lights on an airport. Content: Runway numbering conventions o VFR vs. IFR runways o Displaced threshold o Blast pad/stopway Taxiway Markings o Vehicle roadway markings o Solid white lines are boundaries o Dashed white lines separate lanes within roadway o VOR receiver checkpoint markings o Painted circle w/ arrow in the middle pointing in direction of checkpoint azimuth o Non-movement area boundary markings o Two yellow lines, one solid, one dashed Airport Signs – 6 Types (see PHAN Figures 12-3 & 12-4) o Mandatory Instruction Signs o White letters, red background o Entrance to runway, critical area, or prohibited area Location signs o Yellow letters, black background, yellow border o Taxiway/runway location, boundary of runway, or ILS critical area Direction Signs o Black letters, yellow background Destination Signs Information Signs Runway Distance Remaining Signs Airport Lighting o Airport Beacon o Approach Light Systems Visual Glideslope Indicators VASI PAPI o Runway Lighting REILs Runway edge lights In-Runway lighting o Taxiway Lights o Obstruction Lights o Control of Airport Lighting Wind direction Indicators Pg. 6-15 Things to Avoid (Common Errors): Failure to comply with airport, runway, taxiway sings and markings Failure to comply with airport, runway and taxiway lighting Failure to use proper runway incursion avoidance procedures References: AOPA Safety Advisor No. 2 “Operations at Towered Airports” in Appendix AIM Completion Standards: The lesson is complete when the instructor determines that the student has adequate knowledge of airport and runway markings and lights by giving an oral or written exam. Instructor Notes: Runway Incursion Avoidance o Be aware of the airplane’s position and be aware of other aircraft and vehicle operations on the airport o Read back all runway crossing and/or hold short instructions o Review the Taxi Diagrams as part of preflight planning, before landing, and while taxiing as needed o Know airport signage o Review NOTAMs for information regarding runway/taxiway closures and construction areas o Request progressive taxi instructions from ATC when unsure of the taxi route o Check for traffic before crossing any runway hold line and before entering a taxiway o Turn on aircraft lights and the rotating beacon or strobe lights when taxiing o When landing, clear the runway as soon as possible, and wait for taxi instructions before moving o Study and use proper phraseology in order to understand and respond to ground control instructions o Write down complex taxi instructions at unfamiliar airports o Failure to use proper runway incursion avoidance procedures Do not cross hold short lines until you have been cleared for T/O or to taxi onto/across a runway Without a control tower, look both ways and announce your intentions before proceeding Never taxi onto the runway when there is a plane on final approach Pg. 6-16 Runway Markings o General There are three types of markings for runways: Visual; Nonprecision Instrument; Precision Instrument o o o o Runway Designators Purpose - To identify/differentiate runways from the approach end o The whole number nearest one-tenth the magnetic azimuth of the runway (To Magnetic N) o Letters differentiate between left (L), right (R), and center (C) runways Markings - Large white numbers Runway Centerline Marking Purpose - Identifies the center of the runway providing alignment guidance during T/O and LDG Markings - A line of uniformly spaced stripes and gaps Runway Aiming Point Markings Purpose - Serves as a visual aiming point for a landing aircraft Markings - Broad white stripe on each side of the centerline, approx 1,000’ from the threshold Runway Touchdown Zone Markers Purpose - Identifies the touchdown zone for LDG ops and provide distance info in 500’ increments Markings - Groups of 1, 2, and 3 rectangular bars in pairs about the runway centerline Pg. 6-17 o o o Runway Side Stripe Markings Purpose - Delineate the edges of the runway providing a contrast between the runway and shoulder Markings - Continuous white stripes located on each side of the runway Runway Shoulder Markings Purpose – May be used with side stripes to identify pavement areas not intended for aircraft use Markings - Yellow stripes Runway Threshold Markings Purpose – Identifies the beginning of the runway available for landing Markings - 8 longitudinal stripes of uniform dimensions placed about the centerline (A) The number of stripes is related to runway width (B): Threshold can be Displaced or Relocated Displaced Threshold (DT) o Explanation A threshold at a point on the runway other than the designated beginning of the runway Reduces the amount of runway available for landings The portion behind it is for T/Os either direction and LDGs from the opposite direction Can be used for taxiing, takeoff, and landing rollout o Markings A 10’ wide white threshold bar is located across the runway at the displaced threshold White arrow heads are located across the runway just prior to the threshold bar White arrows are down the centerline between the runway and displaced threshold Demarcation Line Purpose - Delineates the DT from a blast pad/stopway/ taxiway prior to the runway Markings - 3 feet wide and yellow Chevrons Purpose - Show areas aligned with the runway that are unusable for taxi, T/O, LDG Markings - Yellow arrows Relocated Threshold o Explanation Sometimes construction or other activities require the threshold to be relocated A NOTAM should be issued identifying the portion of the runway is closed Pg. 6-18 o EX. 10/28 W 900 CLSD Markings – Identification can vary, as the duration of the relocation varies Common practice is to use a 10’ wide white threshold bar across the runway Runway lights between the old threshold and new threshold will not be illuminated Runway markings in this area may or may not be showing o Blast pad/Stopway Area The blast pad area is an area where a propeller or jet blast can dissipate without creating a hazard Stopway is paved in to provide space to decelerate/stop in the event of an aborted T/O (Chevrons) Taxiway Markings o General Taxiways should have centerline/runway holding position markings whenever intersecting a runway Edge markings separate the taxiway from areas not for aircraft use or define taxiway edges May have shoulder/hold position markings for ILS critical areas and taxiway/taxiway intersections o Taxiway Centerline Markings Normal Centerline Purpose - Provides a visual cue to permit taxiing along a designated path (aircraft kept over line) o Markings - A single continuous yellow line that is 6” – 12” wide Enhanced Centerline Purpose - Same as above but at larger commercial airports to warn that a runway hold position marking is being approached and unless cleared to cross the aircraft should prepare to stop Markings - A parallel line of yellow dashes on either side of the normal taxiway centerline o Centerlines are enhanced for a max of 150’ prior to a runway holding position marking o Taxiway Edge Markings Purpose - Defines the edge of the taxiway (usually when edge doesn’t match up with pavement) 2 types of markings, depending on whether the aircraft is supposed to cross the taxiway edge Continuous Markings o Purpose - Define the taxiway edge from the shoulder/paved surface not for use by aircraft o Markings - Continuous double yellow line with each line at least 6’ wide and 6’ apart Dashed Markings o Purpose - Define the taxiway edge when adjoining pavement is intended for aircraft (Apron) o Markings - Broken double yellow line ( 6” wide/spaced 6” apart, 15’ long and 25’ apart) Pg. 6-19 o Taxi Shoulder Markings Purpose - Paved shoulders prevent erosion but they may not support aircraft Markings - Taxiway edge markings will usually define this area If confusion exists to the side of use, yellow shoulder markings are used o Surface Painted Taxiway Direction Signs Purpose - When it isn’t possible to offer direction signs at intersections, or to supplement such signs Markings – Surface painted location signs with a yellow background and black inscription Adjacent to the centerline with signs indicating left turns on the left side of the centerline and vice versa o Surface Painted Location Signs Purpose - Supplement location signs alongside the taxiway assisting in confirming the designation of the taxiway on Markings - Black background with a yellow inscription, R of center o Geographic Position Markings Purpose - Identifies aircraft location during low visibility operations Markings - Left of the taxiway centerline in the direction of taxiing A circle with an outer black ring, inner white ring and a pink circle o When on dark pavements the white/black ring are reversed Designated with either a number or a number and a letter o Number corresponds with consecutive position on the route Holding Position Markings Pg. 6-20 o General Show where an aircraft is supposed to stop when approaching a runway (Hold on the solid side) 4 yellow lines (2 Solid/2 Dashed) spaced 6” or 12” apart across the width of the taxiway/runway 3 locations where runway hold lines are encountered: 1Taxiways; 2Runways; 3Approach Areas o Runway Holding Position Markings on Taxiways Purpose - Identify where to stop without a clearance onto the runway Always stop so that no part extends beyond the hold markers Don’t cross w/o clearance/ample separation at uncontrolled airports o Runway Holding Position Markings on Runways Purpose - Only installed if normally used for LAHSO or taxiing operations o Must stop before markings/exit prior to reaching the position Markings - Sign (white inscription/red background) next to hold markings Markings are placed on the runway prior to the intersection o Taxiways Located in Runway Approach Area Purpose - Hold aircraft on taxiway so it does not interfere with ops Holding Position Markings for Instrument Landing System (ILS) Purpose – Hold aircraft when the ILS critical area is being protected Markings - 2 yellow solid lines 2’ apart joined by pairs of solid lines 10’ apart across the taxiway Holding Position Markings for Taxiway/Taxiway Intersections Purpose - Installed on taxiways where ATC normally holds aircraft short of a taxiway intersection Markings - Single dashed line extending across the width of the taxiway o If requested to HS of a taxiway w/o marking, provide adequate clearance from the taxiway Surface Painted Holding Position Signs Purpose - Used to supplement the signs located at the holding position o Normally used when the width of the holding position on the taxiway is greater than 200’ Markings - Red background/white inscription, L of center, on the holding side, prior to hold lines Other Markings o Vehicle Roadway Markings Purpose - Used to define a path for vehicle ops on or crossing areas also intended for aircraft Markings - White solid line delineates each edge and a dashed line separates lanes In lieu of the solid lines, zipper markings may be used to delineate edges o VOR Receiver Checkpoint Markings Purpose - Allow the pilot to check aircraft instruments with navigational aid signals Markings - A painted circle with an arrow in the middle (Arrow is aligned toward the facility) Located, with a sign, on the apron/taxiway Sign shows the VOR station ID letter, course for the check, and DME data (if necessary) Black letters/numerals on a yellow background o Nonmovement Area Boundary Markings Pg. 6-21 o o Purpose - Delineates the movement area (The area under air traffic control) Markings - 2 yellow lines (one solid and one dashed) 6” in width Solid line is the nonmovement area side, the dashed line is the movement area side Marking and Lighting of Permanently Closed Runways Purpose - For runways and taxiways which are permanently closed Markings - The lighting circuits will be disconnected The runway threshold, designation, and touchdown markings are obliterated Yellow crosses are placed at each end of the runway and at 1,000’ intervals Temporarily Closed Runways and Taxiways Purpose - To provide a visual indication to pilots that a runway is temporarily closed Markings - Yellow crosses are placed on the runway at each end A raised lighted yellow cross may be placed on each end of the runway instead A visual indication may not be present depending on the reason for closure, duration of the closure, configuration and the existence and hours of operation of an airport control tower o Check NOTAMs and the ATIS for information Closed taxiways are treated as hazardous areas and blockaded; no part of the aircraft may enter o As an alternative, a yellow cross may be installed at each entrance to the taxiway Pg. 6-22 Airport Signs o General Six types of signs installed on airfields Mandatory Instruction; Location; Direction; Destination; Info; Runway Distance Remaining o Mandatory Instruction Signs Purpose - Denote entrance to runway or critical area/area where aircraft are prohibited Markings - Red background with a white inscription Typical Mandatory Signs and Applications Runway Holding Position Sign o Located at the hold position on taxiways intersecting runways/runways intersecting runways o The sign states the designation of the intersecting runway Runway Approach Area Holding Position Sign o Used when necessary to hold aircraft on a taxiway in a runway approach/departure area so it doesn’t interfere with runway ops ILS Critical Area Holding Position Sign o ILS system is being used, and it’s necessary to hold at a location other than the Hold Markers o The sign will have the inscription “ILS” and will be located adjacent to the holding position marking on the taxiway No Entry Sign o Prohibits an aircraft from entering an area o Typically on a taxiway intended to be used only in 1 direction or vehicle intersections of that may be mistaken as a taxiway/movement surface o Location Signs Purpose - Identify either a taxiway or runway on which the aircraft is located Other location signs provide a visual cue to assist in determining when an area has been exited Taxiway Location Sign Purpose - Along taxiways to indicate location Markings - Black background with yellow inscription and border Runway Location Sign Purpose - Complement compass info; typically installed where the proximity of runways to one another could cause confusion as to which runway the pilot is on Markings - Black background with a yellow inscription (Runway #)/ border Runway Boundary Sign Purpose - Provides a visual cue to use as a guide in deciding when “clear of the runway” o Adjacent to the hold markings on the pavement o Visible when exiting the runway Markings - Yellow background/black inscription depicting the hold markings ILS Critical Area Boundary Sign Purpose - Provides a visual cue to use as a guide in deciding when clear of the ILS critical area o Adjacent to ILS hold markings and can be seen leaving the critical area Markings - Yellow background/black inscription depicting ILS hold markings Pg. 6-23 o o Direction Signs Purpose - Identify the designations of intersecting taxiways leading out of an intersection o Designations and their arrows are arranged clockwise from the 1st taxiway on the pilot’s left Markings - Yellow background/black inscription with an arrow indicating the turn direction Destination Signs Purpose - Indicates a destination on the airport Destinations commonly shown are o Runways o Aprons o Terminals o Military Areas o Civil Aviation Areas o Cargo Areas o International Areas o FBOs Markings - Yellow background/black inscription indicating a destination on the airport Always have an arrow showing the direction of the taxiing route to that destination sign o Information Signs Purpose - Used to provide a pilot with information on such things as: Areas the tower can’t see, radio frequencies, and noise abatement procedures Markings - Yellow Background with a black inscription o Runway Distance Remaining Signs Purpose - Used to inform the pilot the amount of distance remaining on the runway The number on the sign indicates the thousands of feet of landing runway remaining Markings - Black background/white numeral inscription one 1/both sides of the runway o CE - Failure to comply with airport, runway, taxiway sings and markings Make sure you know the meaning and purpose of all the signs and markings If unsure, stop and ask ATC for clarification Airport Lighting and Other Airport Visual Aids o Approach Light Systems (ALS) Purpose - The basic means to transition from IFR to VFR for landing Explanation - A configuration of signal lights staring at the landing threshold and extending into the approach area o Visual Glideslope Indicators Visual Approach Slope Indicator (VASI) Purpose - Provide visual decent guidance information during approach Explanation - The lights are visible from 3-5 miles during day and up to 20 or more at night o Safe obstruction clearance within +/- 10o of the centerline and 4 NM from the threshold Pg. 6-24 Configurations o 2,4,6,12, or 16 light units arranged in bars Arranged as near, middle, and far bars (Mid provide another glide path for high cockpits) VASIs of 2,4, or 6 light units are located on one side of the runway (usually the left) VASIs consisting of 12 or 16 light units are located on both sides of the runway o Most installations consist of 2 bars and may consist of 2,4, or 12 light units Two Bar VASIs o Provide one visual glide path, normally set at 3o Three Bar VASIs o Provide two visual glide paths The lower glide path is provided by the near and middle bars and is normally set to 3o Some locations may have up to 4.5o glide paths for proper obstacle clearance The upper glide path is provided by the middle and far bars and is normally set ¼o higher How it Works o Each unit projects light with an upper white segment and a lower red segment o The light units are arranged so that the pilot will see the combinations of lights below: o 2-bar VASI o 3-bar VASI Pg. 6-25 o o o For other VASI configurations Precision Approach Path Indicator (PAPI) General Lights arranged to provide visual decent guidance information during the approach to a runway Uses light units similar to the VASI but in a single row of either 2 or 4 light units Configuration Tri-Color Systems o Normally a single unit projecting a 3-color visual approach path into the final approach area o Glide Path Indications Below - Red Above- Amber On - Green o Useful Range Day – ½ to 1 mile Night – Up to 5 miles (depending on the visibility) Pulsating Systems o Normally a single unit projecting a 2-color visual approach path into the final approach area o Glide Path Indications Slightly Below - Steady red Below - Pulsating red On - Steady white Slightly Above - Pulsating white Above - Faster pulsating white Pulsating increases as the aircraft gets further above/below the glide slope Useful Range During the Day, 4 miles and at Night, up to 10 miles Runway End Identifier Lights (REIL) General - Installed to provide rapid/positive identification of the approach end of a runway Configuration - A pair of synchronized flashing lights located on each side of the runway threshold Effective for: Identification of a runway surrounded by a preponderance of other lighting Identification of a runway which lacks contrast with the surrounding terrain Identification of a runway during reduced visibility Pg. 6-26 o o Runway Edge Light Systems (HIRL, MIRL, LIRL) General - Outline the edges of runways during periods of darkness or restricted visibility conditions Classified according to the intensity or brightness they are capable of producing o High Intensity (HIRL); Medium Intensity (MIRL); Low Intensity (LIRL) a HIRL and MIRL have variable intensity controls Configuration Runway edge lights – White o Instrument runways – Turn yellow the last 2,000,’ or half the runway, whichever is shorter Lights marking the end of the runway – Red/Green o Red is emitted toward the runway to indicate the end of the runway to a departing aircraft o Green is emitted outward from the runway end to indicate the threshold to landing aircraft In-runway Lighting Runway Centerline Lighting System (RCLS) General - Installed on some precision runways to facilitate landing under adverse conditions Configuration o Located along the runway centerline and are spaced at 50’ intervals o From the landing threshold, the lights are white until the last 3,000’ of the runway a White lights begin to alternate with red for 2,000’, and the last 1,000’ all lights are red Touchdown Zone Lights (TDZL) General - On some precision runways, indicating the TD zone with adverse visibility conditions Configuration o Two rows of transverse light bars disposed symmetrically about the runway centerline o Steady burning white lights starting 100’ beyond the landing threshold and extending to 3,000’ beyond the landing threshold or to the midpoint of the runway, whichever is less Taxiway Centerline Lead-Off Lights General o Provide visual guidance to persons exiting the runway o Color coded to warn: In runway environment/ILS critical area, whichever is more restrictive Configuration o Alternate green/yellow lights are installed, beginning with green, from the runway centerline to 1 light position beyond the runway hold position/ILS critical area hold position Taxiway Centerline Lead-on Lights General o Provide visual guidance to persons entering the runway o Warn: In the runway environment/ILS critical area, whichever is more conservative Pg. 6-27 o o Configuration o Color coded with the same pattern as lead-off lights o Bidirectional (i.e., 1 side emits light for the lead-on function the other for the lead-off) Land and Hold Short Lights General o Used to indicate the hold short point on certain runways which are approved for LAHSO Where installed, the lights will be on anytime LAHSO is in effect and off when not Configuration - A row of pulsing white lights installed across the runway at the hold short point Control of Lighting Systems Operation of approach light systems and runway lighting is controlled by the control tower/FSS Pilots may request the lights be turned on or off Pilot Control of Airport Lighting Radio control of lighting is available at some airports by keying the aircraft’s microphone Often available w/o specified hours for lighting and with no tower/FSS or when they’re closed All lighting systems which are radio controlled at an airport operate on the same frequency The CTAF is used to activate the lights at most airports, but other frequencies may also be used o The frequency is in the AFD/the standard instrument approach procedures publications o It is not identified on the sectional charts Pg. 6-28 o o Airport Beacons Vertical light distribution to make them more effective from 1o to 10o above the horizon They can be seen well above and below this peak spread Light Projection Omnidirectional capacitor discharge device Rotate at a constant speed Flashes 24-30 per min for airports/landmarks/points on federal airways; 30-45 per min for heliports Colors and Combinations of Beacons White and Green – Lighted land airport *Green alone – Lighted land airport White and Yellow – Lighted water airport *Yellow alone – Lighted water airport Green, Yellow, and White – Lighted heliport Green/Yellow alone is used w/a white & green/white & yellow beacon display, respectively Military Beacons Two quick white followed by a green flash Operation during the day In Class B, C, D and E surface areas, operation of the airport beacon during the hours of daylight often indicates that the ground visibility is less than 3 miles and/or the ceiling is less than 1,000’ o Don’t rely solely on the airport beacon to indicate if weather conditions are IFR or VFR There is no regulatory requirement for daylight operation Taxiway Lights Taxiway Edge Lights Purpose - Outline the edges of taxiways during periods of darkness or restricted visibility Configuration - Emit blue light Taxiway Centerline Lights Purpose - Used to facilitate ground traffic under low visibility conditions Configuration - Steady burning green lights along the centerline Pg. 6-29 o Clearance Bar Lights Purpose - Installed to increase the conspicuity of the holding position in low visibility conditions o May also be installed to indicate the location of an intersecting taxiway during darkness Configuration - Three in pavement steady burning yellow lights Runway Guard Lights Purpose - Enhance the conspicuity of taxiway/runway intersections Configuration - Either a pair of elevated flashing yellow lights on either side of the taxiway, or a row of in pavement yellow lights across the entire taxiway, at the runway hold marking Stop Bar Lights Purpose - Confirm ATC clearances to enter/cross the active runway in low visibility conditions Configuration - Row of red, unidirectional, steady burning in pavement lights installed across the entire taxiway at the runway hold position, and elevated steady-burning red lights on each side o Following ATC clearance, the stop bar is turned off and the lead-on lights are turned on Cautions o Never cross a red illuminated stop bar even if they have received ATC clearance o If after crossing, the lead-on lights extinguish, hold position and contact ATC for instruction CE - Failure to comply with airport, runway and taxiway lighting Due to reduced visibility, it can be hard to find your way on the ground at night at a new airport Make sure you know the meaning of all the lights before proceeding Pg. 6-30