MD80 Annunciator Lights

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Author:
toddshonts
ID:
92540
Filename:
MD80 Annunciator Lights
Updated:
2011-07-13 11:55:36
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MD80 Annunciator lights
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Description:
MD 80 Annunciator Lights
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  1. APU GEN FEEDER
    FAULT
    • Gen differential fault has occurred for the APU Gen distribution system
    • Also the indicated AC Crosstie is locked open
    • Normally is accompanied by the AC Cross-tie Lockout light.
    • No MASTER CAUTION
  2. AC CROSSTIE LOCKOUT
    • AC Crosstie relay is open
    • Automatic AC Crosstie is inoperative
    • No MASTER CAUTION
  3. L or R GEN FEEDER FAULT
    • Indicates L or R Generator differential fault protection system has removed the Generator from the distribution system.
    • When this light illuminates it normally is accompanied by the AC Cross-tie Lockout light.
    • No MASTER CAUTION
  4. APU GENERATOR OFF
    • APU is operating but both L and R APU bus relays are open
    • MASTER CAUTION on
    • Light is deactivated when APU master switch is off
  5. DC TRANSFER
    BUS OFF
    • DC Transfer Bus not powered
    • Normally powered from left or right DC bus, or Battery. (in that order)
    • MASTER CAUTION on
    • Keep in mind that if the MASTER CAUTION light accompanies this light, it most likely is only a “sensing” problem.
  6. L or R AC BUS OFF
    • Indicates that the R AC Bus is not powered.
    • This bus is normally powered by the respective generator, but can be powered by the opposite generator, APU Generator, or external groundpower.
    • MASTER CAUTION
  7. L or R CSD OIL PRESS LOW
    CSD oil pressure is below operating limits

    MASTER CAUTION
  8. DC BUS OFF
    • Indicates that either Left or RIght DC Bus is not powered.
    • Busses normally are powered from their respective Transformer-Rectifiers.
    • The DC Load-meters and/or Voltmeter should be observed to determine the condition of DC Buses.
    • LEFT and RIGHT DC BUSES may be crossfed with the DC BUS Cross-Tie Switch.
    • MASTER CAUTION
  9. EMER LIGHT
    NOT ARMED
    DC power is available to aircraft and EMER LTS switch is not in ARM position
  10. L or R ENG ANTI-ICE ON
    • Illuminates when the left engine anti-ice switch is placed on and the first of the three valves is fully opened.
    • This switch actuates three valves
    • two for the inletguide vanes/nose bullet and one for the cowl.
    • BLUE
  11. WING ANTI-ICE ON
    • Indicates anti-ice heat has been selected for airfoil heating.
    • The timer has selected anti-ice heat to the wing leading edges, strakes, and ram air scoop.
    • Blue
  12. TAIL DE-ICE ON
    • Indicates de-icing heat has been selected and the timer has selected the horizontal stabilizer leading edge.
    • The timer closes the wing valve and opens the tail valve for a 2 1⁄2 minute period.
    • The only other area provided heat during this period is the ram air scoop.
    • BLUE
  13. PITOT/STALL HEATER OFF
    • Indicates pitot heat selector switch is “OFF” or power has been lost to one of the monitored elements when the selector switch is on.
    • MASTER CAUTION
  14. L or R ICE PROTECT TEMP HIGH
    • Indicates the pneumatic air temperature being delivered into the center pneumatic manifold is excessive caused by a malfunction in the temperature control system which contains the opening and closing of the augmentation valve.
    • MASTER CAUTION
  15. AIRFOIL ICE PROT PRESS ABNORMAL
    • Indicates low or unbalanced pressure in the leading edge ducts or unbalanced pressure in the leading edge ducts when wing valve is open.
    • Indicates low pressure in the horizontal stabilizer leading edge ducts when the tail de-ice mode is operating.
    • It may illuminate briefly when the system is turned on.
    • MASTER CAUTION
  16. ICE PROTECT SUPPLY PRESS HI
    • Indicates excessive pressure is building up in the anti-ice and/or de-ice manifold as result of a malfunctioning ice protection supply pressure regulating valve.
    • MASTER CAUTION
  17. L or R ICE PROTECT TEMP LOW
    • Indicates that pneumatic air temperature being delivered into the center pneumatic manifolds is too low.
    • Could be a resultof low power setting or malfunction in the temperature control system.
  18. L or R ENG VALVE
    Indicates disagreement between any of the three left engine anti-ice valves and the control switch position.
  19. L or R FUEL HEAT ON
    • Indicates 13th stage bleed air is being supplied to the air/fuel heat exchanger.
    • This light responds to valve position.
    • The fuel heat function is timer-controlled for a period of one minute.
  20. ENG SYNC ON
    • Illuminates any time the selector switch is not in the “OFF” position and the landing gear handle is in the down position.
    • The engine sync switch must be Off anytime the aircraft is below 1500 ft.AGL.
  21. ART INOP
    • Illuminates to indicate a failure in the system that causes the automatic reserve thrust to be unavailable. It will also be illuminated any time the switch is in the“OFF” position.
    • MASTER CAUTION
  22. L or R START VALVE OPEN
    Will be illuminated any time the L engine starter valve butterfly is not fully closed.
  23. L or R OIL STRAINER CLOGGING
    • Indicates a pressure differential of 35 psi or more has developed across the main engine oil system filter.
    • May be caused by congealed oil during start when oil temperature is less than 25°C.
    • MASTER CAUTION
  24. L or R OIL PRESS LOW
    • Illuminates when the pressure in the left engine oil system is approximately 35 psi or less.
    • MASTER CAUTION
  25. L or R INLET FUEL PRESS LOW
    • Illuminates when fuel supply pressure just prior to the engine first stage fuel pump drops to approximately 5 psi.
    • MASTER CAUTION
  26. L or R FUEL FILTER PRESS DROP
    • Illuminates when a differential pressure of approximately 5 psi develops across the left main engine fuel system.
    • MASTER CAUTION
  27. YAW DAMP OFF
    Illuminates when the yaw damp function switch is turned to OFF, OVERRIDE, or when the system becomes inoperative during normal operation.
  28. CAWS FAIL
    Indicates any detected central aural warning system failure.
  29. CABIN OXYGEN ON
    • Illuminates to indicate all cabin oxygen door latches have been activated.
    • Blue
  30. AUTO SLAT FAIL
    • Illuminates to indicate a failure in the auto system. Will also illuminate along with the “DISAGREE” AND “AUTO” light when the self-test feature is invalid.
    • MASTER CAUTION
  31. GPWS FAIL
    Indicates failure within the Ground Proximity Warning System.
  32. SPOILER DEPLOYED
    • On the ground -
    • indicates any spoiler is deployed more than 10° ± 2° when the speed brake/spoiler handle is stowed.

    • In flight -
    • Indicates either ground spoiler is extended.
  33. TAIL COMPT TEMP HIGH
    • Illuminates when the temperature in the aft (tail) accessory compartment temperature exceeds 82°C (180°F).
    • MASTER WARNING
  34. APU FIRE
    • Activated by the APU fire detection circuit.
    • MASTER WARNING
  35. CABIN ALT
    • Illuminates when the pressurization system fails to maintain a cabin pressure equivalent to a pressure altitude of approximately 10,000 ft. or less.
    • MASTER WARNING
  36. AC EMER BUS OFF
    • Indicates that the Emergency AC bus is not powered. The bus is normally poweredby the Left AC Bus or Right AC Bus, in that order. Power may be restored to this bus by the battery-powered emergency inverter by placing the Emergency PowerSwitch “ON.”
    • MASTER WARNING
  37. DC EMER BUS OFF
    • Indicates that the Emergency DC bus is not powered.
    • The bus is normally powered by the Left DC Bus or Right DC Bus, in that order.
    • Power may be restored to this bus from the Battery Direct Bus by placing the Emergency Power Switch “ON.”
    • MASTER WARNING
  38. RUDDER TRAVEL UNRESTRICTED
    • When illuminated, indicates the rudder throw limiting mechanism is fully retracted from the rudder power cylinderallowing full rudder travel.
    • This light must be on for takeoff.
  39. AUTO SPOILER DO NOT USE
    • Illuminates to indicate there is a malfunction somewhere in the auto spoiler system.
    • The auto spoiler function must not be “armed” for automatic deployment prior to landing.
    • The spoilers can still be operated manually after touchdown.
  40. WNDSHR INOP
    • Illuminates to indicate there is a malfuntion somewhere in the Windshear Alerting and Guidance System.
    • Will also illuminate with system turned OFF.
  41. STALL INDICATION FAILURE
    • Illuminates with any failure in the angle- of-attack, flap or slat inputs or faults within a single computer.
    • Most system failures and comparator disagreements will cause this SIF light to illuminate.
    • However, under these circumstances only the speakers will be inhibited.
  42. MACH TRIM INOP
    Indicates the Mach Trim Compensator monitor has deactivated the system.
  43. APU OIL TEMP HIGH
    • Indicates APU oil temperature is high
    • MASTER CAUTION
  44. FIRE DETECTOR LOOP
    • Illuminates when any one of the “loop” lights illuminates on the Engine Fire Detection System Panel (aft overhead panel).
    • MASTER CAUTION
  45. APU OIL PRESS LOW
    • APU oil press low
    • On when starting APU
    • Then off
    • MASTER CAUTION
  46. L or R AIR COND SUPPLY TEMP HI
    • Indicates respective air conditioning system pneumatic air supply exceeds normal operating temperature.
    • This indicates a malfunction of the augmentation valve.
  47. FLT RECORDER OFF
    Indicates recorder de-energized, or tape broken, exhausted, or not winding properly.
  48. RADIO FAN OFF
    • In flight -
    • illuminates when the Radio Rack Fan switch is in the “FAN” position and the primary and secondary fans are inop.

    • On Ground -
    • Illuminates if the primary fan becomes inoperative.
  49. ELEVATOR PWR ON
    • Illuminates to indicate when hydraulic power is being used to drive the elevator halves to pitch the nose down. The system is designed to be activated by forward movement of the elevator control column.
    • Blue
  50. SPOILER/FLAP EXTENDED
    Indicates speedbrakes extended with the flaps extended beyond 6°. This light is deactivated when on the ground.

    MASTER CAUTION
  51. PARKING BRAKE ON
    Indicates the parking brake is set.

    Could also illuminate with a malfunction of the anti-skid system.
  52. RUDDER CONTROL MANUAL
    Indicates hydraulic power is not being supplied to the rudder power cylinder.
  53. L or R REVERSER ACCUMULATOR LOW
    Indicates pressure in the accumulator has dropped to 1450 psi or below.
  54. L or R HYD PRESS LOW
    Indicates hydraulic pressure is below normal. This pressure sensing is located in the spoiler sub-system just downstream of the spoiler bypass valve.
  55. L or R OUTBD ANTI-SKID

    L or R INBD ANTI-SKID
    Indicates failure/malfunction of anti-skid protection for the specific wheel. This light will illuminate also when system is tested provided switch is in “ARM” and gear handle is down. The light will be on also if the system switch is “OFF.”
  56. TAILCONE MISSING
    Indicates jettisonable tailcone has unlatched and may have departed the aircraft.
  57. ACCESS COMP DOOR
    • Indicates door is unlatched.
    • Note:
    • This is the access door to the forward accessory compartment. This door is found in the nose gear wheelwell.

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