A318/A319/A320/A321 机组训练手册 FCTM Flight Crew Training Manual(109)

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? Crew qualification
? Weather minima
? Task sharing
? Call-outs
? Go-around strategy
APPROACH PROCEDURE
Applicable to: ALL
TASK SHARING
The workload is distributed in such a way that the PF primary tasks are supervising and decision making and the PNF primary task is monitoring the operation of the automatic system.
The PF supervises the approach (trajectory, attitude, speed) and takes appropriate decision in case of failure and at DH. Since the approach is flown with AP/FD/A-THR, the PF must be continuously ready to take-over
? If any AP hard over is experienced
? If a major failure occurs
? If any doubt arises
The PF announces "LAND", when displayed on FMA.
 

  NORMAL OPERATIONS
PRECISION APPROACH
A318/A319/A320/A321
FLIGHT CREW TRAINING MANUAL 

The PNF is head down throughout the approach and landing. The PNF monitors:
? The FMA and calls mode change as required (except "LAND")
? The Auto call out
? The aircraft trajectory or attitude exceedance
? Any failures
The PNF should be go-around minded. SOME SYSTEM PARTICULARS
? Below 700 ft RA, data coming from the FMS is frozen e.g. ILS tune inhibit.
? Below 400 ft RA, the FCU is frozen.
? At 350 ft, LAND must be displayed on FMA. This ensures correct final approach guidance.
? Below 200 ft, the AUTOLAND red light illuminates if
‐ Both APs trip off
‐ Excessive beam deviation is sensed
‐ Localizer or glide slope transmitter or receiver fails
‐ A RA discrepancy of at least 15 ft is sensed.
? Flare comes at or below 40 ft
? THR IDLE comes at or below 30 ft
? RETARD auto call out comes at 10 ft for autoland as an order. (Instead of 20 ft for manual landing as an indication)
VISUAL REFERENCE
Approaching the DH, the PF starts to look for visual references, progressively increasing external scanning. It should be stressed that the DH is the lower limit of the decision zone. The captain should come to this zone prepared for a go-around but with no pre-established judgement.
 

  NORMAL OPERATIONS
PRECISION APPROACH
A318/A319/A320/A321
FLIGHT CREW TRAINING MANUAL 

Required conditions to continue
? With DH
In CAT II operations, the conditions required at DH to continue the approach are that the visual references should be appropriate to monitor the continued approach and landing and that the
flight path should be acceptable. If both these conditions are not satisfied, it is mandatory to initiate a go-around. A 3 lights segment and a lateral light element is the minimum visual cue for JAR OPS.
In CAT III operations, the condition required at DH is that there should be visual references which confirm that the aircraft is over the touch down zone. Go-around is mandatory if the visual references do not confirm this. A 3 lights segment is required by JAR OPS for fail passive system and 1 centerline light segment for fail operational system.
　
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