737 Flight Crew Operations Manual
Supplementary Procedures Chapter SP
Air Systems Section 2
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP SP.2.1
2 Air SystemsAir SystemsFile Highlight
Wing–Body Overheat Test
Wing–body OVHT TEST switch......................................................Push
Hold for a minimum of 5 seconds.
Both WING–BODY OVERHEAT lights – illuminated
MASTER CAUTION – illuminated
AIR COND system annunciator – illuminated
Wing–body OVHT TEST switch................................................. Release
Both WING–BODY OVERHEAT lights – extinguished
MASTER CAUTION lights – extinguished
AIR COND system annunciator – extinguished
External Air Cart Use
CAUTION: The BAT switch should always be on when using the
airplane air conditioning system since the protective
circuits are DC. This ensures protection in the event of
loss of AC power.
Note: For engine start with a ground air source, see section SP.7.
APU BLEED air switch .................................................................... OFF
ISOLATION VALVE switch ......................................................... OPEN
RECIRC FAN switches .................................................................AUTO
Trim Air Switch ..................................................................................ON
PACK switches .............................................................. AUTO or HIGH
Cabin temperature selectors...........................................................AUTO
Set for desired temperature.
Duct pressure ................................................................. 20 psi minimum
If external air cannot hold 20 psi minimum and the APU is operating:
ISOLATION VALVE switch .............................................. AUTO
September 24, 2015
To Next Page
Loading...
