737 MAX Flight Crew Operations Manual
Air Systems -
Air Conditioning System
Description
2.30.8
MN-FLT-OH-201
Loss of airflow due to failure of an equipment cooling fan results in illumination
of the related equipment cooling OFF light. Selecting the alternate fan should
restore airflow and extinguish the OFF light within approximately 5 seconds.
In the event of a forward cargo fire warning, the equipment cooling exhaust fan is
shut off and the equipment cooling exhaust OFF light is inhibited.
If an overtemperature occurs on the ground, alerting is provided through the crew
call horn in the nose wheel well.
Forward Cargo Compartment
The recirculation fan system circulates air from the passenger cabin around the
lining of the forward cargo compartment. When the overboard exhaust valve is
closed, exhaust air from the equipment cooling system is also diffused to the lining
of the forward cargo compartment for additional inflight heating.
Conditioned Air Source Connection
A ground air conditioning source may be connected to the mix manifold to
distribute preconditioned air throughout the airplane.
March 1, 2021
