0.32
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Continued from previous page
If STBY RUD ON light is not installed on the overhead Flight
Control panel or is placarded INOP: (continued)
If yaw or roll is the result of uncommanded rudder displacement or
pedal kicks: (continued)
If rudder pedal position and/or movement are not
normal:
SYSTEM B FLIGHT
CONTROL switch. . . . . . . . . . . . . . . . . . . . STBY RUD
Land at the nearest suitable airport.
Note: A slight rudder deflection may remain, but
continued rudder pedal pressure may help
maintain an in-trim condition. Sufficient
directional control is available on landing
using differential braking and nose wheel
steering.
Note: Crosswind capability may be reduced.
Note: Do not use autobrake.
Note: Consider checking rudder freedom of
movement at a safe altitude using slow
rudder inputs while in the landing
configuration and at approach airspeed.
Accomplish the normal DESCENT, APPROACH and
LANDING checklists.
Continued on next page
June 3, 2005
737 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
0.33
0.33
Continued from previous page
----------------------------DEFERRED ITEMS ------------------------------
==> DESCENT
Recall. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Checked
Autobrakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ___
GROUND PROXIMITY FLAP/GEAR
INHIBIT switch (as installed) . . . . . . . . . . FLAP/GEAR INHIBIT
GROUND PROXIMITY FLAP
INHIBIT switch (as installed) . . . . . . . . . . . . . . . .FLAP INHIBIT
Landing data . . . . . . . . . . VREF 40 + 30 knots, Minimums ___
Approach briefing . . . . . . . . . . . . . . . . . . . . . . . . . . Completed
----------------------------DEFERRED ITEMS ------------------------------
==> APPROACH
Altimeters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ___
----------------------------DEFERRED ITEMS ------------------------------
==> LANDING
ENGINE START switches . . . . . . . . . . . . . . . . . . . . . . . . CONT
Speedbrake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ARMED
Landing gear. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DOWN
Flaps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1, green light
June 3, 2005
737 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
0.34
0.34
Condition: Static discharge around the windshield, bright glow in
the engine inlets, smoke or dust on the flight deck or
an acrid odor indicates the airplane is in volcanic ash.
Exit volcanic ash as quickly as possible. Consider a 180
degree turn.
OXYGEN MASKS AND SMOKE GOGGLES
(if required) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ON
CREW COMMUNICATIONS
(if required) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ESTABLISH
AUTOTHROTTLE (if engaged) . . . . . . . . . . . . . . .DISENGAGE
[Allows thrust lever to remain where manually positioned.]
THRUST LEVERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CLOSE
Conditions permitting, operate at idle thrust.
[Reduces possible engine damage and/or flameout by decreasing EGT.]
ENGINE START SWITCHES. . . . . . . . . . . . . . . . . . . . . . . . . FLT
PACK SWITCHES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HIGH
WING ANTI–ICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ON
[Increases bleed air extraction to improve engine stall margin.]
ENGINE ANTI–ICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ON
[Increases bleed air extraction to improve engine stall margin.]
APU (if available) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .START
[Provides backup electrical and pneumatic source, if required.]
Note: Encountering volcanic ash can lead to abnormal
systems reactions such as:
• Engine malfunctions, increasing EGT, engine stall
or flameout.
• Decrease or loss of airspeed indications.
• Equipment cooling OFF light.
Continued on next page
VOLCANIC ASH
June 3, 2005
737 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
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