Overhead
The Overhead is disposed in 4 columns left to right being the left hand one the “rows” column number 1.
Row Number 1
Light Panel
STBY COMPASS - Internal + Compass Light.
STORM - Illuminates Center Panel with a bright light used to prevent
lightning strikes blindness + Cockpit preparation before departure.
WIPERS - Slow is for taxi and Fast for flight, take-off and landing.
MIN CAB LT - Used to illuminate the cabin when using the Battery only.
Very useful after engine shutdown with no GPU and Evacuation.
CALLS - Used to talk with Flight Attendants and Mechanics
Fuel Panel
LP VALVE - they are valves that open or closes the fuel flow direct to
the engines. It's always OPEN unless the Fire Handle is pulled.
X-FEED - to cross-feed operation
CAUTION WARNING - indicates low fuel pressure and x-feed
PUMP - Indicates pumps off or running
Door Panel
Note: Amber lights are associated to doors open including cockpit
safe door and maintenance panel door on the Oscar Bay.
SW TEST - used to test the cabin and service door, but only they`re open
Landing Gear Panel
LDG Gear - Three Green Diamonds means it`s Down and Locked
UNLK means it's In Transit and Unlocked
No lights means UP and Locked
SPLR - Indicates Spoiler is extended “Blue on 500 and Green on 600”
TLU - Travel Limitation Unit. It limits the rudder autorite. It’s always in AUTO, unless it fails and you need to set
it in HIGH for high speed when in flight and LOW for ground movement.
MFC - Multi Functional Computer. The functions of the MFC system are to monitor, control and authorize
various aircraft systems and to manage system failures and command associated warnings in the Flight
Warning System (FWS). There are 2 MFCs. One checks the other and vice-versa. It has 2 channels (A/B).
When we have FAULT just press the switch.
Engine #1 Fire Panel
Fire Handle - it illuminates when fire is detected.
Loop A/B - They are sensors on the engine. When one of them illuminates it has failed. Push the button to turn
it OFF and the other one will still work.
Agent 1/2 - When the Fire Handle is PULLED up a SQUIB white light will illuminate what means “abortar”
meaning the 2 Fire Extinguishers bottles (Agent 1/2 ) were activated. A DISCH indication will appear when the
fire extinguisher bottles are empty.
Fire Test - To do the fire warning test on the pre-flight.
Squib Test - To do the fire extinguisher test on the pre-flight.
Row Number 2
External Lights
Beacon - ON Before Propeller Turning
Nav - ON when the aircraft is powered
Strobe - ON entering on the RWY before take-off and after landing
Logo - On when it`s dark
Taxi & TO - ON for Take-off and Taxi (Those have a different format)
Land L/R - For landing
Wing - Used for HOTEL MODE and flying in Icing Conditions at night
Propeller Brake
Note: It`s brakes the propeller on the engine #2 running the DC Generator
providing AC for the aircraft on the ground
Engine Start
Man Ign - Manual Ignition
Crank - To crank manually
Start 1/2 - Press to start
Electrical Panel
DC GEN 1/2 - Runs DC for the Engine Start. It's why they are close together.
EXT PWR - For External Power
BTC - Burst Eye Contactor. It’s used to transform DC into AC. It`s automatic but can
be isolated opening the guard and pushing the button.
DC BUS 1/2 - Main buses. It will illuminate when DC is not powered.
DC SVCE/UTLY BUS - Used to switch between Service and Utility buses.
BATTERIES - They are this symbol just above the BAT AMP sign. They are
recharged by connector and the battery amperes are shown on the gauge
BAT SEL - Switches between Main and Emergency battery.
BAT - It’s Battery switch. On it’s left side there is a push button which shows 2 orange
arrows when battery are being used for Emergency and Essential Buses
STBY BUS - When the power supply on STBY BUS is less than 19.5v it will
illuminate and an under voltage will appear.
TRU - Transformer Rectification Unit. When installed TRU are used to provide
power supply DC Electrical Power for all important system that is not provided
by the battery already in case the 2 DC GEN are inoperative. It uses the AC High
Frequency to supply DC and prevent the batteries from draining.
Inv 1/2 - Supply AC Constant frequency Buses
CVR Cockpit Voice Recorder
Easy. The second picture shows the mic that records everything inside the cockpit for the CVR
Row Number 3
Signs
EMER EXIT LT - On ARM it will engage when the DC GEN are OFF.
However, it’s important to turn it OFF before leaving the aircraft.
De-Icing System and Anti-Ice System
Note: For Engine and Airframe De-Icing
- The rest are self-explanatory. However, MODE SEL AUTO in some
variants are not present. You need to switch it manually.
Probe-heating and Windshield Heating
It provides heating for PITOT TUBES, STATIC PORTS, AOA SENSORS and
TEMPERATURE SENSORS.
Windshield is self-explanatory
AC WILD ELEC POWER
It means, AC Wild Variable Frequency. It has 2 GENs and 2 BUSES + a Service Bus
that is not shown on the panel. There is a guard on the BTC Burst Eye Contactor. And the EXT PWR.
Hydraulic Panel
Very easy. It shows which system is supplied by the Blue or Green line.
Note: MAIN PUMPS are run by AC Power and AUX PUMPS by DC Power (Only the blue line has AUX).
X-Feed - Used when one Main Pump is inop.If X-Feed has an white ON sign indicates the system is operating
in non-normal operation.
ELT Emergency Locator Transmitter
You do not need to do anything here. Only for maintenance