2.12
2.12
Condition: A PACK TRIP OFF light illuminated indicates the
related pack valve closed due to temperature
exceeded limits.
TEMPERATURE
SELECTOR . . . . . . . . . . . . . . . . . . . WARMER TEMPERATURE
[Reduces the work load on the affected air conditioning pack.]
TRIP RESET SWITCH. . . . . . . . . . . . . . . . . . . . . . . . . . . . PUSH
[The PACK TRIP OFF light extinguishes if the pack temperature has
cooled below limits.]
If both PACK TRIP OFF lights remain illuminated:
DESCENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . ACCOMPLISH
Monitor cabin altitude and rate. Descend to lowest
safe altitude or 10,000 feet, whichever is higher.
At level off:
AIRSPEED . . . . . . . . . . . . . . . . . . . 290 KNOTS MINIMUM
[Flight deck and cabin temperatures may increase rapidly below
290 knots.]
PRESSURIZATION MODE
SELECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MAN
OUTFLOW VALVE SWITCH . . . . . . . . . . . . . FULL OPEN
[Increases airplane ventilation.]
Continued on next page
PACK TRIP OFF - CPCS AIRPLANES
June 3, 2005
737 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
2.13
2.13
Continued from previous page
If both PACK TRIP OFF lights remain illuminated: (continued)
If flight deck and cabin temperatures are excessively
warm:
FLIGHT DECK DOOR . . . . . . . . . . . . . . . . . . . . . . . OPEN
[Improves flight deck ventilation.]
CABIN LIGHTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . DIM
IN-FLIGHT ENTERTAINMENT SYSTEMS . . . . . . . . .OFF
FLIGHT DECK AND CABIN
WINDOW SHADES . . . . . . . . . . . . . . . . . . . . . . . CLOSED
GALLEY POWER. . . . . . . . . . . . . . . . . . . . . . . . . . . . .OFF
June 3, 2005
737 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
2.14
2.14
Condition: A WING-BODY OVERHEAT light illuminated indicates
a bleed air duct leak.
ISOLATION VALVE SWITCH . . . . . . . . . . . . . . . . . . . . . CLOSE
PACK SWITCH (affected side). . . . . . . . . . . . . . . . . . . . . . .OFF
[Causes operating pack to regulate to high flow in flight with flaps up.]
ENGINE BLEED AIR SWITCH (affected side) . . . . . . . . . .OFF
WING ANTI-ICE SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . .OFF
[Prevents possible asymmetrical ice buildup on the wings.]
Avoid icing conditions.
If the left WING-BODY OVERHEAT light remains illuminated:
APU BLEED AIR SWITCH (if APU running). . . . . . . . . .OFF
[Stops the flow of bleed air from the APU to the left side pneumatic
ducting.]
If the light remains illuminated:
APU SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .OFF
Do not operate the APU.
If the light extinguishes:
ISOLATION VALVE SWITCH . . . . . . . . . . . . . . . AUTO
ENGINE No. 1 BLEED AIR SWITCH . . . . . . . . . . . .ON
LEFT PACK SWITCH . . . . . . . . . . . . . . . . . . . . . AUTO
WING ANTI-ICE SWITCH . . . . . . . . . . . AS REQUIRED
WING-BODY OVERHEAT
June 3, 2005
737 Flight Crew Operations Manual
Non-Normal Checklists Chapter NNC
Anti-Ice, Rain Section 3
Copyright © The Boeing Company. See title page for details.
TOC.3.1
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