Note: Autopilot may be engaged for a coupled approach or off for a flight director approach.
VHF NAV Radios.................................................................................SET
Set and identify desired ILS station frequency.
Front Inbound ILS Course...................................................................SET
Set same ILS front inbound course in both Course Readouts.
Note: If correct ILS / LOC inbound course has not been set, and a large discrepancy exists between the actual LOC inbound course and the selected course, flight guidance system will not attempt to complete the course intercept; the airplane will fly through the localizer, wings level. In that case, LOC CAP may be annunciated and G/S TRK could occur, causing the airplane to begin to descent. Upon failing to attain LOC TRK and after existing the localizer beam, autopilot will disconnect and flight guidance will revert to HDG HLD / VERT SPD.
SPD MACH Readout ...........................................................................SET
Rotate SPD MACH select knob to set desired IAS in SPD Readout.
Note: If autothrottle system is desired, verify AUTO THROT switch is in on (UP) position.
HDG Readout.......................................................................................SET
Verify required localizer intercept heading is set in HDG Readout.
ILS Button.........................................................................................PUSH
Push ILS button and observe arm FMA’s display ILS.
Note: If localizer only mode is desired, push VOR / LOC button.
Glideslope logic will be inhibited.
Arm FMA’s will display LOC. During localizer capture, arm FMA’s will go blank and roll FMA’s display LOC CAP. When airplane is on centerline, FMA’s will switch from LOC CAP to LOC TRK.
Pitch Profile Readout...........................................................................SET
Rotate pitch wheel as required to position airplane at initial approach altitude.
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Rev. 12/01/00 #29 Flight Manual
Monitor localizer capture and tracking.
Note: Direction and amount of crab angle will be displayed on HSI as the angular difference between airplane heading and the setting on course select pointer.
When glideslope pointer becomes active, lower the landing gear. When one dot below glideslope, select 28° flaps.
SPD MACH Readout ...........................................................................SET
Rotate SPD / MACH select knob to set target speed in SPD Readout.
Note: If SPD MACH Readout is set prior to selecting final approach flaps, the autothrottle system FMA’s will display ALFA SPD (minimum maneuvering airspeed).
ALFA SPD mode is automatically engaged and annunciated when SPD MACH Readout is set to a value less than the alfa speed reference, and SPD SEL or MACH SEL autothrottle mode are engaged.
Monitor glideslope capture.
Note: As airplane reaches capture threshold, pitch mode annunciators change to G/S CAP. Capture point is variable and is function of rate of beam closure, plus beam deviation. Glideslope can be captured from above or below.
If 40 degrees flaps are used for landing, move flap / slat handle to 40 degree detent at glideslope intercept.
Monitor glideslope track.
Note: When the airplane is on beam centerline, pitch FMA’s change from G/S CAP to G/S TRK. Rudder authority, in event of a go-around, is established. Arm FMA’s change from ILS to AUT/GA if automatic go-around logic is satisfied.
When decision height is reached:
DH Lights..............................................................................................ON
Observe DH lights come on when airplane reaches decision height.
Note: In ILS and localizer only approach below 1500 feet AGL, the altitude preselect mode is inhibited.
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If autopilot is engaged:
AP Disengage Button ........................................................................PUSH
Push AP disengage button twice.
Monitor autothrottle retard mode.
Note: When reverse thrust levers are actuated, the autothrottle system will disengage AUTO / THROT switch drops to OFF. The ATS THROTTLE OFF warning lights will not come on.
Continental
Rev. 12/01/00 #29 Flight Manual
GO AROUND FROM FLIGHT DIRECTOR APPROACH
AT decision height:
TO/GA Button ..................................................................................PUSH
Pilot flying manually advance throttles and 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 LOC TRK and G/S TRK to GO RND. 中國航空網 m.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：MD-80 Flight Manual 麥道80飛行手冊 2(144)
