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When the flight path is under complete control, the crew should proceed with a deliberate, systematic process that identifies the affected engine and ensures that the operating engine is not shut down. Do not rush through the shutdown procedure, even for a fire indication. Operators may develop their own crew coordination techniques that meet these objectives. The following technique is an example that could be used:
When an engine shutdown is needed, the PF verbally confirms the affected engine with the PM, then disconnects the A/T and slowly retards the thrust lever of the engine that will be shutdown.
Coordinate activation of the start lever as follows:
.  
PM places a hand on and verbally identifies the start lever for the engine
that will be shutdown

.  
PF verbally confirms that the PM has identified the affected engine

.  
PF directs the PM to move the start lever to cutoff.

 

737 Flight Crew Training  Manual
If the NNC requires activation of the engine fire switch, coordinate as follows:
.  
PM places a hand on and verbally identifies the engine fire switch for the
engine that will be shutdown

.  
PF verbally confirms that the PM has identified the affected engine

.  
PF directs the PM to pull engine fire switch.

 

Evacuation
If an evacuation is planned and time permits, a thorough briefing and preparation of the crew and passengers will increase the chances of a successful evacuation. Flight deck preparations should include a review of pertinent checklists and any other actions to be accomplished. Appropriate use of autobrakes should be discussed. If evacuating due to fire in windy conditions, consider positioning the airplane so the fire is on the downwind side.
Notify cabin crew of possible adverse conditions at the affected exits. The availability of various exits may differ for each situation. Crewmembers must make the decision as to which exits are usable for the circumstances.
For unplanned evacuations, the captain needs to analyze the situation carefully before initiating an evacuation order. Quick actions in a calm and methodical manner will improve the chances for a successful evacuation.

Method of Evacuation
When there is a need to evacuate passengers and crew, the captain has to choose between commanding an emergency evacuation using the emergency escape slides or less urgent means such as deplaning using stairs, jetways, or other means. All available sources of information should be used to determine the safest course of action including reports from the cabin crew, other airplanes, and air traffic control. The captain must then determine the best means of evacuation by carefully considering all factors. These include, but are not limited to:
.  
the urgency of the situation, including the possibility of significant injury
or loss of life if a significant delay occurs

.  
the type of threat to the airplane, including structural damage, fire,
reported bomb on board, etc.

.  
the possibility of fire spreading rapidly from spilled fuel or other
flammable materials

.  
the extent of damage to the airplane

.  
the possibility of passenger injury during an emergency evacuation using
the escape slides.

 

If in doubt, the crew should consider an emergency evacuation using the escape slides.
Copyright . The Boeing Company. See title page for details.
8.10  FCT 737 (TM) October 31, 2006
737 Flight Crew Training  Manual

Discharging Fire Bottles during an Evacuation
The evacuation NNC specifies discharge of the engine or APU fire bottles if an engine or APU fire warning light is illuminated. However, evacuation situations can present possibilities regarding the potential for fire that are beyond the scope of the NNC and may not activate an engine or APU fire warning. The crew should consider the following when deciding whether to discharge one or more fire bottles into the engines and/or APU:
.  
if an engine fire warning light is not illuminated, but a fire indication
exists or a fire is reported in or near an engine, discharge both available
fire bottles into the affected engine

.  
if the APU fire warning light is not illuminated, but a fire indication exists
or a fire is reported in or near the APU, discharge the APU bottle

.  
the discharged halon agent is designed to extinguish a fire and has very
little or no fire prevention capability in the engine nacelles. Halon
dissipates quickly into the atmosphere

.  
there is no reason to discharge the engine or APU fire bottles for
evacuations not involving fire indications existing or reported in or near
　
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