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course of action. Consideration must be given to probable effects if the engine is
operated at the minimum needed thrust.
There are no non-normal checklists associated with the loss of an engine
indication. Operate the engine normally unless a limit is exceeded.
Non-normal checklists also assume:
• During engine start and prior to takeoff, the respective non-normal
checklist is done if a non-normal condition is identified. Upon completion
of the checklist, the Dispatch Deviation Guide or operator equivalent is
consulted to determine if Minimum Equipment List relief is available.
• System controls are in the normal configuration for the phase of flight
before the start of the non–normal checklists.
• Aural alerts are silenced and the system 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 evacuate
contaminants. The 100% position of the oxygen regulator is used when
positive pressure is not needed, but contamination of flight deck air exists.
The NORMAL position of the oxygen regulator is used if prolonged use
is needed and the situation allows. Normal boom mic operation is restored
when oxygen use is no longer needed
• Indicator lights are tested to verify suspected faults
June 3, 2005
737 Flight Crew Operations Manual
Checklist Introduction -
Non-Normal Checklists
Copyright © The Boeing Company. See title page for details.
 CI.2.3
• Flight crew reset of a tripped circuit breaker in flight is not recommended.
However, a tripped circuit breaker 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. A ground reset of a tripped circuit breaker by the flight
crew should only be accomplished after maintenance has determined it is
safe to reset the circuit breaker.
• Flight crew reset of a tripped fuel pump and fuel pump control circuit
breakers in flight is prohibited. Reset of any other tripped circuit breaker
is not recommended, unless if in the judgement of the captain, the
situation resulting from the circuit breaker trip has a significant adverse
effect on safety. These other tripped circuit breakers may be reset once
after a short cooling period (approximately 2 minutes.) A ground reset of
a tripped circuit breaker by the flight crew should only be accomplished
after maintenance has determined it is safe to reset the circuit breaker.
• Flight crew cycling (pulling and resetting) of circuit breakers to clear
non-normal conditions is not recommended unless directed by a
non-normal checklist
After engine start and prior to takeoff, illumination of Master Caution annunciator
lights or red and amber caution lights require completion of the appropriate
non-normal checklist. In certain cases, amber system monitor lights illuminate
during the Master Caution Light recall to inform the flight crew of a failure of one
element in a redundant system. If system operation is maintained by a second
element, the amber system monitor light will extinguish when the Master Caution
Light is reset. In these situations, the amber caution light alerts the flight crew to
the fact that normal system operation will be affected if another element failure
occurs. If an amber caution light illuminates during recall, but extinguishes on
Master Caution reset, completion of the non-normal checklist is not required.
Each air carrier has the responsibility of establishing flight crew procedures in the
event of a system failure after the aircraft has departed the gate or the parking area
for the purpose of takeoff.
Non–Normal Checklist Use
Non–normal checklist use starts when the airplane flight path and configuration
are correctly established. Only a few situations need an immediate response (such
as a stall warning, ground proximity PULL UP and WINDSHEAR warnings, or a
rejected takeoff.) Usually, time is available to assess the situation before corrective
action is started. All actions must then be coordinated under the captain's
supervision and done in a deliberate, systematic manner. Flight path control must
never be compromised.
June 3, 2005
737 Flight Crew Operations Manual
Checklist Introduction -
Non-Normal Checklists
Copyright © The Boeing Company. See title page for details.
CI.2.4
When a non-normal situation occurs, at the direction of the pilot flying, both
crewmembers systematically and without delay do all recall items in their areas of
　
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