737 Flight Crew Operations Manual
2.20
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-4Q8-SJA
2.20
WING-BODY OVERHEAT
1ISOLATION VALVE switch. . . . . . . . . . . . . CLOSE
2 Choose one:
3 R PACK switch . . . . . . . . . . . . . . . . . . . . . . OFF
This causes the operating pack to regulate to
high flow in flight with the flaps up.
4 BLEED 2 air switch . . . . . . . . . . . . . . . . . . . OFF
5 WING ANTI-ICE switch . . . . . . . . . . . . . . . . OFF
This prevents possible asymmetrical ice buildup
on the wings.
6 Avoid icing conditions where wing anti-ice is
needed.
■ ■ ■ ■
7 L PACK switch . . . . . . . . . . . . . . . . . . . . . . OFF
This causes the operating pack to regulate to
high flow in flight with the flaps up.
8 BLEED 1 air switch . . . . . . . . . . . . . . . . . . . OFF
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Continued on next page
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WING-BODY
OVERHEAT
WING-BODY OVERHEAT
(-300/-500)
Condition:
An overheat from a bleed duct leak occurs.
Objective:
To isolate the bleed duct leak.
Right WING-BODY OVERHEAT light illuminated:
►►Go to step 3
Left WING-BODY OVERHEAT light illuminated:
►►Go to step 7
March 24, 2017
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