737 Flight Crew Operations Manual
Checklist Instructions -
Non-Normal Checklists
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-4Q8-SJA CI.2.3
Checklists directing an engine shutdown must be evaluated by the captain to
determine whether an actual shutdown or operation at reduced thrust is the safest
course of action. Consideration must be given to the probable effects of running
the engine at reduced thrust.
There are no non–normal checklists for the loss of an engine indication. Continue
normal engine operation unless a limit is exceeded.
Non–normal checklists also assume:
• During engine start and before takeoff, the associated non–normal
checklist is done if a non-normal situation is identified. After
completion of the checklist, the Dispatch Deviations Guide or operator
equivalent is consulted to determine if Minimum Equipment List
dispatch relief is available.
• System controls are in the normal configuration for the phase of flight
before the start of the non–normal checklist.
• If the MASTER CAUTION and system annunciator lights illuminate,
all related amber lights are reviewed to assist in recognizing the cause(s)
of the alert.
• Aural alerts are silenced and the master caution system is reset by the
flight crew as soon as the cause of the alert is recognized.
• The EMERGENCY position of the oxygen regulator is used when
needed to supply positive pressure in the masks and goggles to remove
contaminants. The 100% position of the oxygen regulator is used when
positive pressure is not needed but contamination of the flight deck air
exists. The Normal position of the oxygen regulator is used if prolonged
use is needed and the situation allows. Normal boom microphone
operation is restored when oxygen is no longer in use.
• Indicator lights are tested to verify suspected faults.
• Flight crew reset of a tripped fuel pump or fuel pump control circuit
breaker is prohibited. In flight, reset of any other tripped circuit breaker
is not recommended. However, these other tripped circuit breakers may
be reset once, after a short cooling period (approximately 2 minutes), if
in the judgment of the captain, the situation resulting from the circuit
breaker trip has a significant adverse effect on safety. On the ground,
flight crew reset of any other tripped circuit breaker should only be done
after maintenance has determined that it is safe to reset the circuit
breaker.
• Flight crew cycling (pulling and resetting) of a circuit breaker to clear a
non-normal condition is not recommended, unless directed by a
non-normal checklist.
December 15, 2019
To Next Page
Loading...
