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B757 Review Questions
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AutoFlight
• At what RA does flare mode engage?
• 45 feet RA
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AutoFlight
• When does autopilot electrical isolation occur?
• With at least two generators working and three autopilots armed for the approach.
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AutoFlight
• After electrical isolation, what is the power source for the center autopilot?
• Battery/Standby system
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AutoFlight
• If an engine generator were to fail on a multi autopilot approach above 200’, what would happen to the AC power distribution
to the auto pilots?
• After the generator failure the center autopilot switches from center AC bus to its
normal source of power, Left AC bus.
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AutoFlight
• If during a land three approach an AP were to fail, could the approach be continued to
an auto land safely?
• Yes. A single fault would not prevent the remaining two autopilots from completing
the auto landing.
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AutoFlight
• Rudder control is added by the AP when?
• Only during multiple AP approaches.
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AutoFlight
• When is GA mode armed?
• When the flaps are not up or GS is captured
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AutoFlight
• Can the AP disconnect bar disconnect all 3 AP?
• Yes, but will not silence the horn
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AutoFlight
• Is over/under speed protection available in VS mode?
• No
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AutoFlight
• What percentage is scheduled on the TMC for CLIMB 1, and CLIMB 2?
• 94% and 88%
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AutoFlight
• What is the scheduled pitch attitude after takeoff at 400’
• V2 + 15
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AutoFlight
• During a coupled missed approach, an engine fails just as the GA switch is activated. Which action
must the pilot take to prevent yaw from rolling the aircraft?
• None. There is rudder input from the auto flight system preventing a yaw from rolling the aircraft. However, once a pitch or roll command is initiated
by the pilot, he must now manually deflect the rudder.
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AutoFlight
• When is the GA mode armed?
• When the flaps are not up, or GS is captured.
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AutoFlight
• Do the autopilots do anything different to the stab trim during a LAND 2 approach?
• Yes. At 330 feet RA and increment of nose up trim is automatically applied.
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AutoFlight
• Can you dispatch with both Yaw Dampers inoperative?
• No, check MEL
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AutoFlight
• When does rudder channeling commence on a multi channel approach?
• Below 1500’ RA
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AutoFlight
• When is the normal bus-tie operation isolated/inhibited on a multi channel
approach?
• 200’ RA
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AutoFlight
• What does the autopilot amber annunciator light indicate?
• Indicates that some operating mode of the engaged autopilot has failed, but the auto
pilot remains engaged.
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AutoFlight
• Is over speed protection available in Flight level change mode?
• Yes.
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AutoFlight
• What is the main power source of the left and center FCC’s?
• Left main AC bus and Center AC bus.
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AutoFlight
• True or false: the autopilot trims nose up at 330’ on CAT III land II approach?
• True.
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AutoFlight
• Is manual rudder input restricted during auto land operation?
• Yes, manual rudder input is restricted due to A/P rudder control from 1500 feet
through GA.
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AutoFlight
• What is a good way to monitor the center FCC in flight?
• Use the center Autopilot
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AutoFlight
• TRUE/FALSE: During an Autoland Roll Out mode operation the Autopilots lower
the nose wheel to the runway at 5 feet R/A plus 2 seconds with the pitch attitude less
than 2 degrees
• TRUE
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AutoFlight
• Should you follow the flight director pitch bar at lift off?
• No, you would probably get a tail strike
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AutoFlight
• What will the A/T system do when the thrust reversers are selected after landing?
• A/T mode disengages
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AutoFlight
• Before the autoflight system will climb using FLCH,________ and then the desired
AFDS pitch change is made
• A higher altitude has to be set in the Altitude window
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AutoFlight
• During the takeoff roll, EPR appears in both the FMA A/T windows until what speed?
• 80 knots
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AutoFlight
• All AFDS modes can be disengaged by selecting another command mode or by disengaging the A/P and_____
• turning off the Flight Directors
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AutoFlight
• During the takeoff roll, the F/D pitch bar commands a fixed attitude of
• 8 degrees nose up
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AutoFlight
• Can the A/T be operated independently of the flight director and the autopilot?
• Yes
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AutoFlight
• After liftoff, the F/D pitch bar initially moves to an attitude of
• 15 degrees nose up
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AutoFlight
• TRUE/FALSE: The vertical speed mode will command the aircraft to leave the
current altitude when a new altitude mode has not been selected.
• TRUE
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AutoFlight
• When GA is engaged, the AFDS controls pitch and roll while the A/T
• Increases thrust to establish a 2,000 fpm climb
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AutoFlight
• TRUE/FALSE: During the autoland rollout mode operation, rollout guidance continues to full stop or until the A/Ps are disengaged.
• TRUE
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AutoFlight
• TRUE/FALSE: During the autoland rollout mode operation the F/D roll command bar provides directional steering information.
• TRUE
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AutoFlight
• Active FMA modes are displayed in large green letters in the top part of the
annunciator windows. Armed FMA modes are indicated _______underneath the green
annunciations.
• In smaller, white letters
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AutoFlight
• How many FCCs are normally used for A/P operations during an automatic approach, landing and rollout, as well as the initial
phase of a go-around?
• Three
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AutoFlight
• TRUE/FALSE: The V/S mode has no stall or overspeed protection and annunciations
• TRUE
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AutoFlight
• When the LOC is captured, the AFDS will command up to _____ degrees regardless of
the MCP bank angle selector.
• 30