Falcon 50EX Annunciator Lights

At least 1 of the 3 throttles must be at 82° Power Lever Angle and

Airplane is on the ground and 1 or more of the following:

• 1 of the 4 inboard airbrakes is not retracted 1 of the 4 slats is not extended
• Flaps are beyond the 22° position
• Horizontal stab is out of takeoff range (-3° through -7°)
• Autopilot is engaged
• Parking brake applied
• #2 brakes applied

Thrust reverser unlocked on ground or inflight with control handle in STOW position

• 1. Control actuator not locked. Or
• 2. Microswitch which indicates STOW position for RH or LH target door not closed
• 3. Secondary latch not locked
• Note: TRANSIT or DEPLOYED lights on instrument panel illuminate sequentially

With aural warning: Cabin altitude higher than 10,000 +/- 500 feet

Autopilot failed

Auto disengagement of autopilot & light illumination. Failure detected by AP internal monitoring circuit

Note: Light can be extinguished by again pressing AP DISENGAGE button on either control wheel

Battery 1 and/or 2 overheat - internal temp of >150°F or 160°F with digital BAT TEMP indicator

NOTE: This light is in parallel with red light located on double BAT TEMP indicator

Oil pressure < 50 psi in associated engine

Illuminates when either of following occurs:

• S-duct door is open
• Aircraft is on ground, #2 throttle is >84°, and #2 engine RPM is <85% with 15 second time delay

Illuminates if any of the following conditions exist:

• Main cabin door unlocked 
• Main cabin door handle not latched 
• Baggage door is unlocked 
• Aft compartment door unlocked, but monitored only on ground

Illuminates when either of folowing occurs:

• Failure of IAS disarm contacts that normally prevent auto extension of outboard slats at 270 KIAS or
• After takeoff if either ground flight relay remains in ground mode 5 seconds after takeoff. One of the autoslat system is not available in flight

Conditioned air overheat in distribution ducts

Temperature of air in cabin and/or cockpit supply duct > 85°C - 95°C

Flaps stop to move at same time light illuminates. Detection of LH and RH flap deflection asymmetry

• 5° for flap deflections of 20°
• 8° for flap deflections of 48°

APU bleed valve in not closed and any 1 of the 3 throttles is >54° PLA

APU bleed switch is in OFF and APU bleed air valve is open

APU shutdown and bleed air vlave is open

Overheat detection is >310°C or 275°C. E.I.E.D. may display mssg flag indicating faulty bleed area

For associated LH or RH circuit

No electrical current for pitot heat or static probe heating

Heating system monitoring circuit is failed

Emergency aileron actuator is not set to zero: (It is out of the +/- 30 minute range)

Failure of ARTHUR Q monitoring

Discrepancy between speed information from air data computer & from aileron and/or elevator Arthur Q

Deviation of +/- 30 kt. Up to IAS = 250 kt. Deviation of +/-50 kt. at 370 kt.

AP coupler trim circuit failed (monitoring of electrical pulses sent to horizontal stab actuator by AP coupler)

Horizontal stabilizer does not move, although commanded to do so by the autopilot

Generator mounted on engine #1, #2, or #3 is not connected to main bus bar (associated reverse current relay open)

Main bus bars are no longer suplied by batteries (associated contactor open)

Bus-tied relay closed and 225 amp current limiter is good. Means left & right main busses are tied

Computer of associated engine is off. Or

Computer has failed (internal failure or electrical power supply failure or incorrect data has been processed to the computer)

Fuel booster pump pressure < 5.0 - 6.0 psig (345 - 415 reletive mbar)

Any 1 of the 3 air-vent valves (feeder tank or wing tank) is not closed or

Defueling valve is not closed or

Pressure refueling access door is not closed or

Gravity fueling control switch is not in the OFF position

Fuel level in any 1 of the 3 feeder tanks < 250-300 lb for a minimum of 15 +/- 3 seconds

Hydraulic tank pressure is < 16 psia in either one or both hydraulic reservoirs

Parking brake accumulator hydraulic pressure is < 1200 psi of trapped hydraulic fluid

Illuminates when either of the following occurs:

• Standby pump is running continuously for longer than 60 seconds
• Standby pump selector handle is in ground mode

APU generator reverse-current relay has opened

Nose cone fan failure after a 15 second time delay

Hydraulic system #1 pressure is < 1,500 psi downstream from hydraulic pump 1

Hydraulic system #1 pressure is < 1,500 psi downstream from hydraulic pump 2

Hydraulic system #2 pressure is < 1,500 psi downstream from hydraulic pump 3