737 Operations Manual
Non-Normal Checklists -
Air Systems
Copyright © The Boeing Company. See title page for details.
D6-27370-400E-TBCE NNC.2.5
EQUIPMENT COOLING OFF
Condition: The Equipment Cooling Supply or Exhaust OFF light
illuminated indicates a loss of airflow from the
selected cooling fan.
EQUIPMENT COOLING SUPPLY/EXHAUST
SWITCH (as required) . . . . . . . . . . . . . . . . . . . . . .ALTERNATE
[The light should extinguish within approximately 5 seconds.]
No further action is necessary in flight if the equipment
cooling OFF light does not extinguish.
OFF SCHEDULE DESCENT
Condition: The OFF SCHED DESCENT light illuminated indicates
the airplane descended before reaching the planned
cruise altitude set in the FLT ALT indicator.
No action is necessary if the airplane is returned to the
airport of departure for land‘ing.
If not landing at airport of departure:
FLIGHT ALTITUDE INDICATOR . . . . . . . . . . . . . . . . RESET
Reset to actual airplane altitude.
June 08, 2001
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