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? For the cases where three consecutive failures affecting flight controls may lead to the simultaneous loss of one elevator and some ailerons, no aileron-preset anticipation is required. This can be visualized on ECAM FCTL page.
If the third and dimensioning failure occurs, the remaining elevator compensates the pitch up effect.
PROCEDURE GUIDELINES
Depending on the combination of failures, the AP might be not available. Indeed, in case of ailerons preset, the AP behaviour is less than optimum and automatically disconnects.
ABNORMAL OPERATIONS
FLIGHT CONTROLS
Below 2 000 ft or when in CONF 2 however, the aileron preset is cancelled to facilitate the landing manoeuvre and permit the use of AP if available.
The ELEV REDUND LOST procedure requires both speed and FL limitations:
? The speed limitation is introduced to cope with aircraft structure effort, should a third dimensioning failure occur.
? The FL limitation is introduced to maintain stabilizer authority, should a third dimensioning failure occur.
LDG CONF- APPR SPD - LDG DIST corrections for failures in QRH must be referred. As F/CTL ELEV REDUND LOST is a result of a multiple failures, refer to the use of tables for multiple failure memo.
The decision to divert remains at captain's discretion and is mainly linked to the moment where the failure occurs and to operational considerations such as maintenance, passengers' convenience.... The aft CG warning is generated by the Flight Envelope (FE) computer as a function of the THS position. In case of aileron preset, the THS position counteracts the pitch up effect inducing an erroneous CG computation. This is why any aft CG warning should be disregarded. CG, computed by the FCMC and displayed on ECAM, remains reliable (Refer to SI-040 general)
If a third dimensioning failure occurs leading to the loss of both elevators:
? The aircraft longitudinal control is ensured through MAN PITCH TRIM ONLY
? The A/THR may be disconnected to limit engine acceleration/deceleration thus facilitating the aircraft longitudinal control.
? The FL and speed limitations no longer apply
ABNORMAL OPERATIONS
FUEL
FUEL LEAK
Applicable to: ALL
Significant fuel leaks although rare, are sometimes difficult to detect.
Fuel check will be carried out by:
? Checking that the remaining fuel added to the burnt fuel corresponds to the fuel on board at the gate.
? Maintaining the fuel log and comparing fuel on board to expected flight plan fuel would alert the crew to any discrepancy.
Fuel checks should be carried out when sequencing a waypoint and at least every 30 min . Any discrepancy should alert the crew and investigation should be carried out without delay.
Any time an unexpected fuel quantity indication, ECAM fuel message or imbalance is noted, a fuel leak should be considered as a possible cause. Initial indications should be carefully cross-checked by reference to other means, including if possible, a visual inspection.
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A330/A340 机组训练手册 FCTM Flight Crew Training Manual 2(38)
