0.2
0.2
Condition: A concentration of air conditioning smoke/fumes is
identified.
OXYGEN MASKS AND SMOKE GOGGLES
(if required) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ON
CREW COMMUNICATIONS
(if required) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ESTABLISH
RECIRCULATION FAN SWITCH . . . . . . . . . . . . . . . . . . . . .OFF
[Eliminates possible source of smoke/fumes.]
If smoke/fumes stop:
Continue flight with the recirculation fan switch OFF.
If smoke/fumes continue:
ISOLATION VALVE SWITCH . . . . . . . . . . . . . . . . . . . CLOSE
R PACK SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .OFF
If smoke/fumes stop:
Continue flight with the R PACK switch OFF and
ISOLATION VALVE switch CLOSE.
If smoke/fumes continue:
R PACK SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . AUTO
L PACK SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . .OFF
If smoke/fumes stop:
Continue flight with the L PACK switch OFF and
ISOLATION VALVE switch CLOSE.
If smoke/fumes continue:
L PACK SWITCH. . . . . . . . . . . . . . . . . . . . . . . . . AUTO
Plan to land at nearest suitable airport.
Continued on next page
AIR CONDITIONING SMOKE/FUMES
June 3, 2005
737 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
0.3
0.3
Continued from previous page
Accomplish the SMOKE/FUMES REMOVAL checklist, if
required.
Condition: Pitch attitude not consistent with existing phase of
flight, altitude, thrust, and weight, or noise and/or low
frequency buffeting.
Crosscheck ground speed and winds provided by the IRS
and FMC to determine airspeed accuracy if indicated
airspeed is questionable.
Note: Erroneous or unreliable airspeed indications may be
caused by blocked or frozen pitot-static system(s), or
a severely damaged or missing radome.
AIRSPEED UNRELIABLE
AIRPLANE ATTITUDE/THRUST . . . . . . . . . . . . . . . . . . ADJUST
Maintain airplane control. Attitude and thrust information
is provided in the Performance-Inflight section.
PITOT STATIC HEAT . . . . . . . . . . . . . . . . . . . . . . . . .CHECK ON
MACH/AIRSPEED INDICATORS . . . . . . . . . . . CROSS CHECK
June 3, 2005
737 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
0.4
0.4
Condition: Automatic pressurization mode has failed or the
cabin altitude is not under control.
Increasing thrust may ensure adequate air supply to control
cabin altitude.
ENGINE BLEED AIR SWITCHES . . . . . . .ON (ONE AT A TIME)
PACK SWITCHES . . . . . . . . . . . . . . . . AUTO (ONE AT A TIME)
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