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737 > Annunciator Meanings > Flashcards

Annunciator Meanings Flashcards

8
Q

Standby by LOW QUANTITY

A

-Quantity approx 50%

Leak in STBY system will take B down to approx 64%

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9
Q

Standby LOW PRESSURE

A

Low output pressure of Electric standby <1300psi

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10
Q

STBY RUD ON

A

Standby rudder PCU pressurised

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11
Q

Flt control (A and B)

A
  • <1300psi to corresponding system

- Corresponding hydraulic system isolated from F.E.A.R (Feel elevator, Elevator, Ailerons, Rudder)

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12
Q

YAW DAMPER

A
  • Not engaged or inop
  • Could be tripped off by FLT CONTROL B switch through or to OFF, #1 transfer bus looses power for more then 2 sec, rate gyro or actuator fail
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13
Q

FEEL DIFF PRESS

A
  • Failure of either hydraulic system or an elevator pitot system
  • Computer measured pressure different between A and B of 25%
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14
Q

SPEED TRIM FAIL

A
  • Illuminated after RECALL if one FCC fails

- Illuminated if both FCC fail

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15
Q

MACH TRIM FAIL

A
  • Illuminated after RECALL if one FCC has failed

- Illuminated if Mach trim function on both FCC fail

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16
Q

AUTO SLAT FAIL

A
  • Illuminated if RECALL is pressed and one FCC failed

- Illuminated if both FCC fail

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17
Q

FUEL VALVE CLOSED

A 
Bright blue
-Valve is in transit
-Valve position and start lever or fire handle disagree 
Dim blue
-valve is closed
(By the start lever or fire handle)
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18
Q

FILTER BYPASS

A
  • Pressure difference exceeds 11.5psi

- Indicates impending filter bypass (contaminated filter)

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19
Q

VALVE OPEN

A 
Bright blue
-Valve is in transit
-Valve is in disagreement with selector position
Dim blue
-Valve is open
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20
Q

LOW PRESSURE (main tank)

A
  • Pressure is low; or
  • Pump is off
  • Master caution will only illuminate with both pumps in same tank indicating LOW PRESSURE
  • RECALL will indicate if one pump is LOW PRESSURE
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21
Q

LOW PRESSURE (centre tank)

A
  • Out out pressure low <22psi
  • One LOW PRESSURE light will not illuminate master caution unless RECALL is pressed
  • Both indicating LOW PRESSURE will illuminate master caution
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22
Q

LOW OIL PRESSURE (Gen drive)

A

CSD below minimum operating limits

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23
Q

HIGH OIL TEMP (Gen drive)

A

CSD has exceeded 157 degrees C

Low oil quantity or improper mechanical operation

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24
Q

STBY PWR OFF

A

AC bus is not powered

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25
Q

GRD POWER AVAILABLE

A

Ground power is plugged in (if phase or frequency is wrong the switch will not engage)

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26
Q

TRANSFER BUS OFF

A

Transfer bus is not powered (actually looks at transfer relay position)

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27
Q

GEN OFF BUS

A
  • Generator control breaker (GCB) is open

- Generator is not supplying respective bus

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28
Q

BUS OFF

A

generator bus is not powered

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29
Q

APU GEN OFF BUS

A

APU is up to speed however APU is not the power source (aux power breaker open)

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36
Q

OFF (equipment cooling)

A
  • Low airflow detected in selected fan duct; or
  • Failure of internal sensor on power up; or
  • The sensor or filter is dirty
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37
Q

NOT ARMED (emergency lights)

A

Not in the armed position

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38
Q

OVERHEAT (window)

A
  • Window has overheated; or

- Loss of electrical power

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39
Q

ON (window)

A

Window heat controller is supplying power to the corresponding window (can cycle on and off with sunlight)

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40
Q

CAPT P/S 1 AUX STATIC

A

Probe not heated

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41
Q

F/O STATIC 2 AUX P/S

A

Probe not heated

42
Q

L ELEV PITOT

A

Probe not heated

43
Q

L ALPHA VANE

A

Probe not heated

44
Q

TEMP PROBE

A

Probe not heated

45
Q

F/O P/S 2 AUX STATIC

A

Probe not heated

46
Q

CAPT STATIC 1 AUX P/S

A

Probe not heated

47
Q

R ELEV PITOT

A

Probe not heated

48
Q

R ALPHA VANE

A

Probe not heated

49
Q

L VALVE OPEN (anti-ice)

A 
Bright
-Valve is in transit; or
-Switch and valve in disagreement
Dim
-Valve is open
49
Q

BLEED TRIP OFF

A
  • Excessive engine bleed temp (254 degrees C) or pressure (220psi)
  • Engine bleed valve closes
  • Related pack flow control & SOV closes (drives mix valve full cold)
50
Q

R VALVE OPEN (anti-ice)

A 
Bright
-Valve is in transit; or
-Switch and valve in disagreement
Dim
-Valve is open
50
Q

AUTO FAIL

A 
-Transfers to standby automatically
Caused by either 
-Loss of AC power for >15sec
-Cabin alt 13875ft
-Excessive cabin rate of change +/-1890fpm
51
Q

COWL ANTI-ICE

A

Over-temperature or Overpressure on corresponding side

51
Q

OFF SCHED DESCENT

A

Aircraft is descending before reaching planned cruise altitude

52
Q

COWL VALVE OPEN

A 
Bright
-Valve is in transit or 
-Valve is in disagreement with switch position
Dim
-Valve is open
Referring to corresponding side
52
Q

STANDBY

A

Pressurisation system operating in standby mode

53
Q

OVERHEAT (hydraulics)

A

Hydraulic fluid used to cool and lubricate has overheated on the corresponding pump (760kgs of fuel in each main tank minimum required for hydraulic cooling)

53
Q

MANUAL

A

Pressurisation operating in manual mode

54
Q

LOW PRESSURE (hydraulic)

A

The corresponding pump is producing <1300psi

Disarmed with fire handle pulled

54
Q

LOW OIL QUANTITY (APU)

A

Insufficient oil for extended operation

55
Q

FWD ENTRY, AFT ENTRY, FWD CARGO, AFT CARGO, FWD SERVICE, AFT SERVICE

A

Related door is not closed and locked

55
Q

MAINT (APU)

A

Low oil quantity, short operation only (30-50hrs)

56
Q

DUCT OVERHEAT

A

Excessive temp in corresponding duct >88 degrees C (air mix valve drives full cold does not trip pack)

56
Q

LOW OIL PRESSURE (APU)

A
  • Illuminated during start

- Oil pressure is low (less than 35psi)

57
Q

DUAL BLEED

A

APU bleed air is open and either
-Eng 1 bleed is on; or
-Eng 2 bleed is on and isolation valve is open
(Thrust levers must not go above idle)

57
Q

HIGH OIL TEMP (APU)

A

Oil temp excessive (auto shutdown occurs)

58
Q

RAM DOOR FULL OPEN

A

Ram door in full open position corresponding side

  • On ground
  • Airborne with flaps extended
  • Airborne with flaps up but pack requires maximum cooling
58
Q

FAULT (APU)

A
  • High oil temp
  • ECU senses fault and initiates auto shutdown
  • Overspeed protection is lost or fuel valve fails to close after shutdown
  • If start fails or APU GEN OFF fails to illuminate
59
Q

PACK TRIP OFF

A

Corresponding pack has tripped off
-function of turbine inlet ovht, pack discharge ovht or compressor discharge ovht
-Related pack valve closes and drives mix valve full cold
-ACM working to hard
(Can be caused by dirty hear exchangers)

59
Q

OVERSPEED (APU)

A
  • Actual speed = 110%
  • After shutdown Overspeed protection fails self test
  • APU start rejected manually before reaching 95%
60
Q

WING BODY OVERHEAT (left)

A

Bleed air duct leak in left engine pylon, inboard wing LE, air conditioning bay, keel beam or APU billed air duct

60
Q

LE DECIVE EXT

A

Flaps in stages 1,2,5

61
Q

WING BODY OVERHEAT (right)

A

Bleed air duct leak in right engine pylon, inboard wing LE or air conditioning bay

61
Q

LE DEVICES FULL EXT

A

Flaps stages 10+

62
Q

ALIGN

A

Steady
-Respective IRU is operating normally in either ALIGN mode, initial ATT mode or shutdown cycle
Flashing
-Alignment cannot be completed due to
-Aircraft movement
-Significant difference between previous and present position
-Requires current position

63
Q

FAULT (IRS)

A

Fault with the respective IRS NAV/ATT mode(s)

64
Q

ON DC

A

Corresponding IRS operating on DC power from switched hot batt bus (right IRS will only operate for 5min on DC)

65
Q

DC FAIL

A

Battery power insufficient to maintain IRU operation (<18V)

If both are illuminated switched hot batt bus is not powered or battery is nearly dead

66
Q

REVERSER

A
  • Disagreement between selector valve and isolation valve
  • One or both sleeves not in their commanded position
  • Auto-restow circuit activated
  • Any other malfunction
67
Q

INOP (PMC)

A

PMC inop or selected off

68
Q

LOW IDLE

A

Inflight idle less than 25% N1

737 (23 decks)

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