Rotate SPD / MACH select knob to set target speed in SPD Readout.
Autothrottle system FMA’s will display SPD (plus selected value).
Note: Is SPD Readout is set prior to selecting landing flaps, the autothrottle system FMA’s will display ALFA SPD. After selecting landing flaps, FMA’s will again display SPD.
Verify that correct decision height has been set.
(Continued)
Continental
Rev. 12/01/00 #29 Flight Manual
Note: Align mode engages at approximately 150 feet, roll FMA’s switch from AUT LAND to ALN (align), and any crab angle maintained by the autopilot is removed.
If ALN is not annunciated on an FMA by 100 feet of radio altitude, initiate a go-around or disconnect the autopilot and continue the approach manually, conditions permitting.
Autothrottle system retard mode engages at approximately 50 feet AGL, as measured by the radio altimeter, reducing engine thrust at the rate programmed to reach idle or near idle at touchdown. Fast / slow indicators are removed from view. Autothrottle FMA’s change from SPD (plus selected value) to RETD.
Flare mode engages at approximately the same time as retard mode, adjusting pitch attitude for touchdown. Pitch FMA’s change from AUT LAND to FLAR (flare).
For airplanes without autoland rollout guidance:
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Roll out mode engages at main gear wheel spin-up, roll and pitch FMA’s switch to ROL OUT (roll out), arm FMA’s go blank, and throttles move rapidly to aft idle stop.
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After nose gear touchdown, arm, roll, and pitch FMA’s go blank and flight director command bars on both ADI’s are removed from view.
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Autopilot disengages five seconds after nose gear strut compression. Push autopilot disconnect button on control wheel to turn off flashing red AP lights and silence aural and vocal warning. Roll and pitch FMA’s will now display HDG HLD and ALT HLD.
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When reverse thrust is applied, autothrottle switch drops to OFF and autothrottle system FMA’s go blank. PF must maintain runway alignment manually after nose gear strut compression.
For airplanes with autoland rollout guidance:
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At main gear spin-up roll mode engages and roll and pitch FMA’s switch to ROL OUT (rollout). Localizer deviation signals then control rudder and nosewheel steering to maintain localizer centerline. Also at main gear spin-up, throttles will move rapidly to aft idle stop.
(Continued)
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At nose gear compression, ROL OUT remains in roll and pitch FMA’s. The autopilot will automatically keep airplane on runway centerline. Flight director command bars will provide lateral steering guidance.
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When reverse thrust is applied, AUTO THROT switch drops to OFF and ATS FMA’s go blank. Red lights will not come on. If reverse thrust greater than 1.6 EPR is applied, autopilot may disengage.
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Twenty seconds after main gear spin-up, arm FMA’s go blank advising pilot that go-around guidance is no longer available.
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At end of landing roll, press control wheel release button twice, once to disengage autopilot and second time to turn flashing red lights off and to silence aural and vocal warnings. Roll and pitch FMA’s now display HDG HLD and ALT HLD.
Continental
Rev. 12/01/00 #29 Flight Manual
GO AROUND FROM AUTOLAND APPROACH
At decision height:
TO/GA Button ..................................................................................PUSH
Pilot flying manually advance throttles, push TO/GA button and hold for at least 1 second. Autothrottle mode changes from SPD (plus selected value) to EPR GA. Arm mode goes blank. Roll and pitch modes change from AUT LND to GO RND.
Note: When pressure is released on the throttles, the autothrottles system will refine the go-around thrust setting.
The thrust rating indicator automatically changes to go-around (GA) if not previously selected.
Pilot flying monitor autopilot performance.
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本文链接地址：MD-80 Flight Manual 麦道80飞行手册 2(146)
