NAVIGATION / INSTRUMENTS Flashcards by J Schiess

What does an overspeed warning sound like?

 Clacker

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Can you test the overspeed warning system in the air?

 No

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If the mach / airspeed warning were to activate, could you cancel it?

 Yes, slow down

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What system or component sends the signal to the aural warning module to sound the clacker?

 ADIRU (Air Data Inertial Reference Unit)

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What does an illuminated GPS light mean?

 Failure of both GPS sensor units

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What does an illumination of the GPS light mean on RECALL?

 Failure of a single GPS unit

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What does an illuminated ALIGN (steady) light mean?

 IRS operating in ALIGN, INITIAL, ATT or SHUTDOWN cycle

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What does an illuminated ALIGN (flashing) light mean on the IRU panel?

 Difference in position entered or no position entered

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Does an extinguished ALIGN light on the IRU panel mean that the system is OFF?

 No

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Does an extinguished ALIGN light mean that

the system is in NAV and aligned?

 No, could be in ATTITUDE

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What does an illuminated FAULT light mean

on the IRU panel?

 ATT or NAV fault is detected in IRS

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What does an illuminated ON DC light mean?

 Momentary self test when first turned on or AC power not normal

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What does an illuminated DC FAIL light mean?

 DC power not normal

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Are the IRU’s the only source of attitude and heading information?

 No, integrated standby flight instruments (ISFD) or standby instruments and STBY compass

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If the airplane’s present position cannot be entered through the MCDU, how can it be entered?

 IRS Display Unit (ISDU)

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Must the airplane remain stationary during

alignment?

 Yes

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How long should an alignment normally take?

 5 to 17 minutes (7 to 10 a tour latitudes)

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Where can you see how much time is

remaining in the alignment process?

 ISDU-HDG / Status Pos

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When the IRU mode selector is first positioned left to NAV, the ON DC light comes on. Why?

 Self Test

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What is the normal power source for IRU #1?

Backup?

 Standby AC; Switched hot battery bus

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What is the normal power source for IRU #2?

Backup?

 AC Transfer bus #2, Switched hot battery

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If the IRU does not like the airplane position entered, what message will be displayed on
the MCDU?

 Verify Position

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How do you initiate a fast realignment on

short turnarounds?

 Align, EnterPosition, NAV or Align, NAV, Enter Position

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How long will a fast realignment take?

 30 Seconds (aircraft must remain stationary)

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25. What happens if the airplane is moved during a fast realignment?

 IRS automatically begins a full alignment process when the aircraft stops moving

26. Can IRU alignment be lost if the mode selector is moved out of the NAV position?

 Yes

27. If alignment is lost in flight, can it be regained | before landing?

 No

28. What would the IRU’s be good for if alignment | was lost in flight?

 Attitude Reference

29. How long would it take to reestablish attitude | reference?

 30 Seconds straight & level flight

30. What must be done by the crew to reestablish the heading reference?

 Enter actual heading

31. What should the crew be concerned about | when using IRU heading reference?

 Updating it from time to time

32. What alert would you get if an IRU was left ON | and the battery was the only source of power?

 Horn in Nosewheel well

33. If an IRU was to fail, could the affected pilot | benefit from the operating IRU?

 Yes, IRS transfer switch

34. Which IRU is the default IRU?

 Left for Left, Right for Right

35. If the aircraft reverted to STANDBY power, | what lights would you see on the IRS panel?

 On DC light on the right, no lights on the left

36. How long will the ON DC light remain illuminated on the right?

 5 Min, then it will shutdown

37. What does NORMAL position of the IRS/VHF | NAV/FMC switching allow?

 Default Operation

38. What does L/R position of the IRS/VHF | NAV/FMC switching allow?

 Switches both to left or right units

39. On the Displays-Source Panel what does | SOURCE refer to?

 Displays electronic unit (DEU)

40. When you switch ALL to 1 or 2, on the | Displays-Source Panel what are you switching?

 Single DEU control of all displays

41. In AUTO which displays are controlled by | DEU 1?

 Capt outboard  Capt inboard  Upper

42. In AUTO which displays are controlled by DEU 2?

 FO outboard  FO inboard  Lower

43. In AUTO, if DEU 1 failed, what would happen to the affected displays?

 DEU 2 controls

44. In AUTO, if DEU 2 failed, what would happen | to the affected displays?

 DEU 1 controls

45. What does CONTROL PANEL refer to?

 Displays or EFIS control panel

46. How is the NORMAL position of the switch different from BOTH on 1 or 2?

 Left controls Capt’s display and right controls FO’s display

47. What modes are Weather Radar available in?

 ARC or MAP

48. On EFIS Displays-Source Panel what modes is | TCAS display available?

 MAP or ROSE

49. On the Mode Control Panel when is the | Altitude Alert inhibited?

 Glide slope capture, flaps > 25

50. What is the default airspeed of the Mode | Control Panel when first powered up?

 100KTS

51. What is the default altitude of the Mode | Control Panel when first powered up?

 Displays previously selected altitudes

52. Is it possible to have BELOW G/S lights | illuminated with other aural and visual alerts active?

 Yes

53. When would this light illuminate?

 Excessive GS deviation(1.3DOT)

54. When can you inhibit the Below G/S Inhibit | alert?

 Below 1,000ft RA

55. What would the Display Switches be used for?

 Switching displays on respective display units

56. Moving the Captain’s main DU to MFD will give you what kind of display?

 Displays PFD on outboard display. Inboard display is blank until eng or sys is selected

57. What does an amber A/P light mean?

 Lighttest switch held in #1 position

58. What does a flashing red A/P light mean?

 Auto-pilot disengagement

59. What does a steady red A/P light mean?

 Stab out of trim below 800ft RA on a dual A/P approach, ALT ACQ inhibited on  A/P GO-AROUND if stab not trimmed for single A/P operation

60. What does a FMC light mean?

 test #1 or #2 or a message exists for both MCDU’S

61. How long will the ISFD operate after the main battery (batteries) has been depleted?

 150 minutes

62. How long will the total time be for ISFD | operation with a single battery?

 180 minutes

63. What does the AUTO position mean on the Engine Display Control Panel?

 Both reference bugs set by the FMC

64. What does the BOTH position mean on the | Engine Display Control Panel?

 both reference bugs set manually

65. What does the 1 or 2 position mean on the | Engine Display Control Panel?

 respective engine N1 reference bug and readout set manually

66. What does the Fuel Flow Reset position do on the Engine Display Control Panel?

 Resets fuel used to zero/displays fuel used momentarily, decreases to zero then displays fuel flow

67. What does the Fuel Flow Used position do on the Engine Display Control Panel?

 Displays fuel used since last reset; after 10 secs display auto reverts to fuel flow

68. What happens if Fuel Used switch is held longer than 30 seconds?

 Fuel Used readout is deactivated for remainder of the flight

69. What does the AUTO position of the SPD REF switch do?

 FMC sets speeds and weights

70. What does the V1 position do on the Engine | Display Control Panel?

 Manually sets V1 on the ground / in-flight gives “V1 Invalid Entry” message

71. What does the VR position do on the Engine Display Control Panel?

 Manually sets VR on the ground / in-flight gives “VR Invalid” message

72. What does the WT position do on the SPD REF selector?

 Allows manual entry or reference gross weight

73. What does the VREF position do on the Engine Display Control Panel?

 Manually sets ref speed inflight / on the ground displays “VREF Invalid Entry” message

74. What does the SET position do on the Engine Display Control Panel?

 Removes the digital readout above the airspeed indication

75. What does the MFD engine switch display?

 Secondary engine indications on the lower DU or upper or inboard DU (Depending on the position of the display select panel selector)

76. What does the SYS position do on the Engine Display Control Panel?

 Displays hydraulic pressure and quantity on the lower DU (will also display brake temp and control positions if your aircraft has those options)

77. What are the three windows of the Flight Mode Annunciator (FMA)?

 Autothrottle, roll, pitch

78. How would you move the Captains Inboard | display to another location?

 Display select panel switch