APPROACH LIGHTING PAPI-SC Precision Approach Path Indicator SINGLE CHANNEL Compliance with Standards FAA: ICAO: L-880 & L-881 AC 150/5345-28 (Current Edition) ETL Certified Annex 14, Vol. 1, para. 5.3.5.23 to 5.3.5.45 Uses The PAPI system uses a one light channel unit to provide the pilot precise visual information, enabling the approach procedure to be performed with the utmost accuracy and safety. The Type L-880 PAPI system consists of four light units located at the side of the runway adjacent to the origin of the glide path. The nominal glide slope angle is midway between the angular settings of the central pair of the four units. If an aircraft is on the correct approach path, the pilot will see two red and two white light indicators. If the aircraft approach is too high, an increased number of white light indicators will be seen. If the approach is too low, the pilot will note an increased number of red light indicators. The Type L-881 PAPI system is identical to the L-880, except only two light units (instead of four) are used. The nominal glide slope is midway between the angular settings of the two units, and when the pilot is on or close to the correct approach path, the unit nearest the runway will be seen as red and the other unit as white. The Style A system is for use with an AC voltage input. The Style B system is for use on 6.6 A or 20 A series circuits. An electronic inclinometer assembly, which is a mercury-free product, is provided on each PAPI unit to de-energize all light units if the optical pattern of any light unit is raised between 0.5° and 1.0° or lowered between 0.25° and 0.5° with respect to the setting angle of the light unit. Features • Each PAPI light unit uses only three 105 W, 6.6 A lamps. These are the same lamps as used in F-Range in-pavement lights, decreasing spare parts requirements • Lamp wattage is 315 W total, 21% less than traditional light units that use two 200 W lamps and 48% less than traditional light units that use three 200 W lamps. • Very low wind resistance in the landing direction due to the light unit’s very small shape • One optical channel consisting of only 2 lenses and 1 filter provides a very sharp transition from red to white never exceeding three minutes of arc over the full beam width • A unique digital display indicating the vertical angle is included in each unit. It eliminates the need to manually use an aiming device for routine verification of vertical angle setting, minimizing maintenance time. It also eliminates the need to use a separate aiming device during initial installation. • Lenses protected from sandblast by a hardened front glass shield • Long focal length makes adjustment in elevation easy, accurate and stable Ordering Code PAP - 0 Power A = PAPI A (voltage)1 B = PAPI B (current) Style 2 = L-881 (2 Box) 4 = L-880 (4 Box) Housing 0 = Aluminum Light Units (Standard) 1 = 316 Stainless Steel3 Interlock (PAPI A Only)2 0 = Without 1 = With Notes 1 L-881 input voltage is 208/220/240 VAC. L-880 input voltage is 240 VAC only. 2 Interlock Relay Option provides ON/OFF control through current sensing of the runway series circuit during nighttime operations. During daytime, the PAPI is activated at the 100% step. 3 For both the Style A and Style B PAPI, the light unit housing is stainless steel. For the Style A PAPI, the master control box housing is also stainless steel. • Reference FAA Cert Alert No. 02-08 dated Dec. 12, 2002 regarding prevention of the possibility of dew or frost forming on the light unit optics: At airports where PAPI units are activated when needed and thus are not operated continuously, change airport lighting circuitry to ensure PAPIs are preset to operate continuously on a low power setting, either 5 percent or 20 percent of full intensity as necessary for local site conditions. • If aiming angle is greater than 5.1º, order an Elevation Extension Kit (Part No. 94A0496) for each light unit. • For non-FAA applications that do not require a tilt switch, use Part No. 44A6853-C. 2-inch EMT Kit 94A0616- Type 2 = 2 Light Units (FAA L-881) 4 = 4 Light Units (FAA L-880) Features (Continued) • A tilt indicator and lamp failed indicators can be read from outside the PAPI unit without removing the top cover. This also allows quick troubleshooting, minimizing the maintenance effort needed to determine which light unit is tilted. The horizontal angle can also be displayed. • Stable mounting on just 2 mounting legs reduces installation cost and is much easier to level compared to 3 or 4 leg light units 2082 Rev. Q I Manual No. 96A0379 C - 29 APPROACH LIGHTING PAPI-SC I Precision Approach Path Indicator Features (Continued) Single Channel PAPI Baffle • Reduced maintenance. The unit is fully sealed and remains clean inside. Lamp, front glass, and red filter replacement does not require any tools. Light Box 2 = Two box Single Channel PAPI 4 = Four box Single Channel PAPI • Colorimetric conformity maintained over the whole width of the red beam Cut-off Angle (Primary) 1 = 0 to 3.3 degrees 2 = 3.1 to 6.4 degrees 3 = 6.3 to 10 degrees • No water can accumulate on the cover, so reflections that could constitute a false optical signal are eliminated • Use of only aluminum, stainless steel hardware and optical glass provide a high degree of corrosion resistance. For extreme environmental conditions, an optional stainless steel housing is available. • For Style A systems, a photoelectric control on the Master control cabinet automatically provides full intensity during the day and a reduced intensity (5% or 20% of full intensity) at night. Both the full and reduced intensity light level can be field adjusted. A circuit breaker is provided to permit the input power to be de-energized for field maintenance. • Only one PAPI light unit assembly is used on either a Style A or Style B system, minimizing spare part requirements 94A0570- Cut-off Angle (Secondary) 1 = 0 to 3.3 degrees 2 = 3.1 to 6.4 degrees 3 = 6.3 to 10 degrees Note The SC PAPI Baffle allows airports to modify the horizontal light beam coverage of the PAPI unit for obstacle avoidance in the approach area. See Service Bulletin ALN152 for field installation details. Exploded View • Fixture uses a black light box with an international orange cover and stainless steel hardware. • Meets both Class I and II temperature ranges: - Class I: -31 °F to +131 °F (-35 °C to +55 °C) - Class II: -67 °F to +131 °F (-55 °C to +55 °C) Adjustment of the beam elevation The beam setting is quickly achieved in a most user friendly way by means of an internal controller board, allowing for very precise and stable elevation adjustment. No separate aiming device is needed. Electrical Supply Each Type A PAPI system is powered from a Master Control box. Each Type B PAPI light unit is powered with 6.6 A maximum via a 6.6A/6.6 A or 20 A/6.6 A 300 W isolation transformer. A field splice kit is supplied with each light unit to provide for external electrical connections between PAPI system components. Style A1 Input Voltage: 240 VAC, ±10%, 50/60 Hz L-880 (4-box) 3-lamps/light unit 1,700 VA max.3 Input Voltage: 208/220/240 VAC, ±10%, 50/60 Hz L-881 (2-box) 3-lamps/light unit 1,612 VA max.4 Style B 2 Three Lamps – 6.6 A through one 300 W isolation transformer (each light unit) L-880 (4-Box) – Total CCR Load: 1,448 VA max. L-881 (2-Box) – Total CCR Load: 724 VA max. 1 2 3 4 As seen at input of PAPI Master Includes PAPI light units and isolation transformers Limit on distance from Master to first light unit is 30 ft (9.1 m) Limit on distance from Master to first light unit is 150 ft (45.7 m) C - 30 2082 Rev. Q I Manual No. 96A0379 Construction 1. Aluminum alloy cover (standard) 2. Front glass 3. Front glass gasket 4. Outer lens 5. Inner lens 6. Red filter 7. Filter retainer 8. Lamp holding bracket 9. Prefocus tungsten-halogen MR-16 lamp 10. Cover gasket 11. Lockable latch 12. Aluminium alloy housing (standard) 13. Leveling plate 14. Lower flange 15. Mounting leg, 2-inch EMT (Supplied by others) 16. Frangible adapter 17. Ground mounting flange 18. Anchor bolts (4) (Supplied by others) APPROACH LIGHTING PAPI-SC I Precision Approach Path Indicator Fig. 2 Installation of PAPI A Light Unit Fig. 3 Typical Installation of a PAPI A Light Unit Fig. 4 Installation of PAPI B Light Unit Fig. 5 Light Unit Dimensions Master Spare Components Light Unit Spare Components Description Part No. Description Part No. CCT Control Board Frangible Coupling, Master Fuse, 1 A, SB (F4) Fuse, 2 A, SB (F1, F2) Fuse, 0.5 A, SB (F3) Photocell SCR Snubber, SCR Varistor, 575 VAC, Input Varistor, 750 VAC, Output 44A6546-3 62B0064 47A0017 47A0049 47A0119 48A0089 28A0011 28A0027 32A0028 32A0025 Baffle, 0 to 3.3 degrees Baffle, 3.1 to 6.4 degrees Baffle, 6.3 to 10 degrees Frangible Coupling, 2-inch EMT Inclinometer Mount Assembly Lamp, 105 W, 6.6 A Red Filter SC PAPI Control Board SC PAPI Control Board, Tilt Switch Disabled SC PAPI Optical Box SC PAPI Optical Box, Stainless Steel SC PAPI Optical Box, Tilt Switch Disabled 60B1673-1 60B1673-2 60B1673-3 44B0180 44A6813/INSL1 48A0425 1438.12.220 44A71221 44A7122-11 44A6853 44A6853-1 44A6853-C Installation 1 It is recommended that each light unit is installed on a solid wellleveled concrete foundation. Special care should be taken if the subsoil is known to be unstable. The PAPI units are installed on height adjustable frangible mounting legs with bottom flanges secured on the concrete foundation. ADB Airfield Solutions Leuvensesteenweg 585 B-1930 Zaventem Belgium ADB Airfield Solutions, LLC 977 Gahanna Parkway Columbus, OH 43230 USA Telephone: +32 (0)2 722.17.11 www.adb-air.com Telephone: +1 614.861.1304 +1 800.545.4157 Upon initial replacement of either of the older SC PAPI Control Boards (44A6674 or 44A6674-1) or the Inclinoneter Mount Assembly (44A6813), you must replace both items. Packaging Net Weight: 44lb (20kg) Gross Weight: 46lb (21kg) In cardboard box: 25.6 x 13 x 40.2 in (65 x 33 x 102 cm) © ADB Airfield Solutions All rights reserved Product specifications may be subject to change, and specifications listed here are not binding. Confirm current specifications at time of order. 2082 Rev. Q I Manual No. 96A0379 C - 31