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Non-Normal Checklists (NNCs) and provides guidance for situations beyond the
scope of NNCs. Aircrews are expected to accomplish NNCs listed in the QRH.
These checklists ensure maximum safety until appropriate actions are completed
and a safe landing is accomplished. Techniques discussed in this chapter minimize
workload, improve crew coordination, enhance safety, and provide a basis for
standardization. A thorough review of the QRH section CI.2, (Checklist
Introduction, Non-Normal Checklists), is an important prerequisite to
understanding this chapter.
Non-Normal Situation Guidelines
When a non-normal situation occurs, the following guidelines apply:
• NON-NORMAL RECOGNITION: The crewmember recognizing the
malfunction calls it out clearly and precisely
• MAINTAIN AIRPLANE CONTROL: It is mandatory that the Pilot
Flying (PF) fly the airplane while the Pilot Monitoring (PM)
accomplishes the NNC. Maximum use of the autoflight system is
recommended to reduce crew workload
• ANALYZE THE SITUATION: NNCs should be accomplished only after
the malfunctioning system has been positively identified. Review all
EICAS messages to positively identify the malfunctioning system(s)
Note: Pilots should don oxygen masks and establish communications
anytime oxygen deprivation or air contamination is suspected, even
though an associated warning has not occurred.
October 31, 2006
777/787 Flight Crew Training Manual
Non-Normal Operations
Copyright © The Boeing Company. See title page for details.
8.2 FCT 777/787 Preliminary (TM)
• TAKE THE PROPER ACTION: Although many in-flight non-normal
situations require immediate corrective action, difficulties can be
compounded by the rate the PF issues commands and the speed of
execution by the PM. Commands must be clear and concise, allowing
time for acknowledgment of each command prior to issuing further
commands. The PF must exercise positive control by allowing time for
acknowledgment and execution. The other crewmembers must be certain
their reports to the PF are clear and concise, neither exaggerating nor
understating the nature of the non-normal situation. This eliminates
confusion and ensures efficient, effective, and expeditious handling of the
non-normal situation
• EVALUATE THE NEED TO LAND: If the NNC directs the crew to land
at the nearest suitable airport, or if the situation is so identified in the
QRH section CI.2, (Checklist Introduction, Non-Normal Checklists),
diversion to the nearest airport where a safe landing can be accomplished
is required. If the NNC or the Checklist Introduction do not direct landing
at the nearest suitable airport, the pilot must determine if continued flight
to destination may compromise safety.
Troubleshooting
Troubleshooting can be defined as taking steps beyond the published checklist in
an effort to improve or correct a non-normal condition. Examples of this are:
• attempting to reset a system, or cycling a circuit breaker when not
prescribed by the NNC
• using maintenance-level information to dictate crew actions
• use of switches and controls intended only for maintenance.
Troubleshooting is rarely helpful and has caused further loss of system function
or failure, and in some cases, accidents and incidents. The crew should consider
additional actions beyond the checklist only when completion of the published
checklist steps clearly result in an unacceptable situation. In the case of airplane
controllability problems when a safe landing is considered unlikely, airplane
handling evaluations with gear, flaps or speedbrakes extended may be appropriate.
Also, attempting to free jammed flight controls should only be attempted if the
airplane cannot be safely landed with the existing condition.
Note: Flight crew entry into an electronics compartment in flight is not
recommended.
Crew distraction, caused by preoccupation with troubleshooting, has been a key
factor in fuel starvation and CFIT accidents. Boeing recommends completion of
the NNC as published whenever possible, in particular for flight control
malfunctions that are addressed by a NNC. Guidance for situations beyond the
scope of the non-normal checklist is provided later in this chapter.
October 31, 2006
777/787 Flight Crew Training Manual
Non-Normal Operations
Copyright © The Boeing Company. See title page for details.
FCT 777/787 Preliminary (TM) 8.3
Approach and Landing
When a non-normal situation occurs, a rushed approach can often complicate the
situation. Unless circumstances require an immediate landing, complete all
corrective actions before beginning the final approach.
　
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本文鏈接地址：787機組訓練手冊Flight Crew Training Manual 787(121)