Lights Flashcards
What is the corrective action for a “FUS DUCT HOT” light?
ON GROUND:
Secure ground AC and all engine and APU bleed air and return to the line.
What is the probable cause for a “FUS DUCT HOT” light?
Leak from: -Bleed Air Manifold -APU Bleed Air Lines -EDC Plumbing .....in the area around crosship manifold creating excessive heat.
What is the probable cause for a “CABIN PRESS” light?
Light becomes illuminated at 10,000(+/- 500) ft. Light out by 8,000 feet on descent.
What is the probable cause for a “MASTER DE-ICING” light?
Fault in deicing system/bomb bay heat system.
What is the corrective action for a “MASTER DE-ICING” light?
Locate corresponding fault on overhead panel.
Activate/secure associated system as required.
What is the probable cause of an “ELEC POWER” light?
- Gen 2, 3, 4 OFF light is on.
- Overheat of TR No. 1, 2, or 3.
What is the corrective action for an “ELEC POWER” light?
Locate corresponding fault on overhead panel.
Reset/secure associated system.
What is the probable cause of a “PRESS SYSTEM” light?
- Oil pressure low L/R EDC
- Oil temperature high L/R EDC
- Cabin Exhaust Fan INOP
- Refrigeration Duct overheat warning
What is the corrective action for a “PRESS SYSTEM” light?
Locate corresponding fault on overhead panel. Secure associated faulty system.
What is the probable cause for a “RACK OVHT” light?
- Electric Rack overheat condition exists.
- MAIN DC BUS failure.
What is the corrective action for a “RACK OVHT” light?
- Initiate “Fire of Unknown Origin” checklist/procedures.
- Locate corresponding rack overheat light.
- provide required cooling or secure equipment as required.
What is the probable cause for an “IFF” light?
- Mode 4 zeroized.
- Self-test function of computer has detected a faulty computer.
- Transponder not replying to proper Mode 4 interrogations.
What is the corrective action for an “IFF” light?
- Ensure MASTER switch is in NORM.
- MODE 4 toggle switch ON.
- Proper code selected.
What is the probable cause for a “START VALVE” light?
1 of 4 Engine Start Valves is open.
What is the corrective action for a “START VALVE” light?
- Check for corresponding light on overhead panel.
- Shut down related engine by pulling associated E-handle.
What is the probable cause for a “FLAP ASYM” light?
Flap Asymmetry System has been tripped.
What is the probable cause for a “DOORS OPEN” light?
Cabin/HSC door not locked.
What is the probable cause for a “1 HYD PRESS” light?
Hydraulic Pump 1 output pressure is below 1,800 psi.
What is the corrective action for a “1 HYD PRESS” light?
Turn off Hydraulic Pump 1
What is the probable cause of a “1A HYD PUMP” light?
Hydraulic Pump 1A output pressure is below 1,800 psi.
What is the corrective action for a “1A HYD PUMP” light.
Turn off Hydraulic Pump 1A.
What is the probable cause for a “2 HYD PRESS” light?
Hydraulic Pump 2 output pressure is below 1,800 psi.
What is the corrective action for a “2 HYD PRESS” light?
Turn off Hydraulic Pump 2
What is the probable cause of an “NTS INOP” light?
Inoperative NTS system.
What is the corrective action for a n “ NTS INOP” light?
- continue holding out on feather button.
- pull e-handle.
- push feather button.
What is the probable cause of a “GEN MECH FAIL” light?
Primary generator drive and bearing failure.
What is the corrective action for a “GEN MECH FAIL” light?
Place respective generator off and perform emergency shutdown procedures if requred.
What is the probable cause of a “CHIPS” light?
Metal particles on magnetic plug in power section or gearbox.
What is the corrective action for a “CHIPS” light?
Check for secondary indications and if noted perform emergency shutdown procedures. If no secondary indications continue and monitor.
What is the probable cause of an “OIL HOT” light?
Engine oil temp above 100°
What is the corrective action for an “OIL HOT” light?
BETA limits (100° for 30 minutes)
Open inducer valves for oil cooler augmentation.
ALPHA limits (100° for 5 minutes)
Open oil cooler flaps to cool engine oil.
What is the probable cause for an “OIL PRESS” light?
-Engine oil pressure below 40psi
or
-Gearbox oil pressure below 130psi
What is the corrective action for an “OIL PRESS” light?
If engine pressure is within limits continue operation. If not execute emergency shutdown procedures.
What is the probable cause of a “PROP PUMP” light?
Reduced flow and drop in pressure from prop 1 or 2 due to pump failure, obstruction or low oil level.
What is the corrective action for a “Prop pump” light?
Continue engine operation and refer to Prop Malfunctions chapter in NATOPS.
What is the probable cause of a “FIRE WARNING” light?
A fire exists in either the Engines or APU
What is the corrective action for a “FIRE WARNING” light?
-APU) evacuate the aircraft immediately.
-(ENGINE) perform engine emergency shutdown procedures.
*Pull E-handl
*Discharge HRD
•Pull start button
•Notify control tower
•Set “OIL TANK SHUTOFF VALVE” circuit breaker
What is the probable cause for a “WING HOT” light?
Air temperature in wing plenum exceeds safe limits.
MAINT NOTE
May be caused by a leak in the Bleed Air Manifold or EDC plumbing
What is the corrective action for a “WING HOT” light?
Secure wing deicing.
What is the probable cause for a “LE HOT” light?
Wing leading edge skin temperature has increased in excess of 110° C.
MAINT NOTE
(One of the modulating valves is either stuck open or not modulating)
What is the probable cause for a “HTR OUT” light?
Electrical flow to pitot heater elements has been interrupted or current flow detector is inop.
What is the corrective action for a “HTR OUT” light?
Check respective bus and monitor for proper operation.
What is the probable cause for a “START VALVE” light?
Start control valve is open for respective engine.
What is the corrective action for a “START CONTROL VALVE” light
*If light remains on or comes on after start, pull E-handle
What is the probable cause for a “GEN OFF” light
- Gen failure
- Over/Under frequency
- Over/Under voltage
- Feeder fault
- Sup Panel failure
- TR 2/3 failure
- Associated bus monitoring switch “OFF”
What is the corrective action for a “GEN OFF” light?
- Put associated BUS MONITORING switch “ON”
- Perform generator reset procedures
- Ensure GEN 4 AUX CONT and GEN 4 TRANS circuit breakers are set.
What is the probable cause for a “TR OVHT” light?
TR overheated.
What is the corrective action for a “TR OVHT” light?
Pull respective breaker (#3 FLC, #2 MLC)
