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aircraft nose down (leading edge up). With flaps retracted, this requires
approximately 8 hand wheel turns of the manual trim. This prevents melting
snow and rain from running into balance bay areas and prevents the stabilizer
limit switch from freezing.
Pitot heat and cowl anti-ice may be used during taxi-in if conditions warrant.
During operations on ice or snow covered surfaces, exercise extreme caution
when approaching parking areas. Be on the alert for poor braking action and
snow piles or drifts adjacent to taxi and runways.
If prolonged operation in icing conditions with the leading and trailing edge
flaps extended was required:
Flaps ................................................................................................................. 15
Retraction to less than flaps 15 is not recommended until ice has been
removed or a ground inspection had been made.
Stabilizer Trim..................................................................SET 0 TO 2 UNITS
Prevents melting snow and ice from running into balance bay areas and
prevents the stabilizer limit switch from freezing. With flaps retracted, this
requires approximately eight hand wheel turns of manual trim.
Engine Anti-ice..............................................................................................ON
If icing conditions exist, engine anti-ice must be on.
737
Flight Manual Continental
Sec. 3 Page 341
Rev. 11/15/02 #41
Parking
The aircraft should be parked headed into the wind, if practical, particularly in
driving rain and snow conditions. Protective plugs and covers, etc. should be
installed. If brakes have been used immediately prior to parking, do not set
brakes until sufficiently cooled.
Landing
Refer to LANDING ON WET OR SLIPPERY RUNWAYS this section.
Securing for Overnight or Extended Period (Aircraft Unattended)
If remaining overnight at off-line stations or at airports where normal support is
not available, the flight crew should arrange for or ascertain that the following
actions have been accomplished:
· Position the pressurization mode selector to MAN AC/MAN and hold the
outflow valve switch to CLOSE until the outflow valve indicates closed.
· Wheel Chocks - check in place.
· Release parking brake to eliminate possibility of brakes freezing.
· Protective covers and plugs should be installed to protect the aircraft and
engines from snow and ice if left unattended for an extended period of time.
· All water tanks and containers should be drained to protect from freezing if
the aircraft is to be left unattended for an extended period of time.
· All toilets should be drained to protect from freezing if the aircraft is left
unattended for an extended period of time.
Sec. 3 Page 342
Rev. 11/15/02 #41 Continental
737
Flight Manual
INTENTIONALLY LEFT BLANK
737
Flight Manual Continental
Sec. 3 Page 343
Rev. 11/15/02 #41
HOT WEATHER OPERATION
High ground temperatures have adverse effects on passenger and crew comfort
and generally decrease aircraft performance. Every effort should be made to
keep the interior of the aircraft as cool as possible. All doors to the aircraft
should be kept closed as much as possible. The flight deck windows must be
kept closed and cargo doors should not be left open longer than necessary. The
flight attendants should verify all gasper outlets are opened, reading lights
extinguished, and window shades closed on the side of the aircraft exposed to
the sun. All air conditioning packs should be used (when possible) for
maximum cooling.
While the aircraft is electrically powered, a pack(s) should be run or cooling air
supplied to the aircraft when OAT exceeds 40° C / 103° F to protect the
reliability of electrical and electronic equipment in the aircraft.
If cooling air is available from an outside source, the supply should be plugged
in immediately after engine shutdown and should not be removed until just prior
to engine start.
Consideration should be given to reducing the heat being generated in the flight
deck. Window heat, radar and other electronic components, which contribute to
a high temperature level in the flight deck, should be turned off while the
aircraft is on the ground. Windshield air, foot air vents, and all the air outlets on
the flight deck should be open.
Caution: Window heat must be ON 10 minutes before takeoff.
>>@ To attain maximum cooling on ground, follow these procedures:
IF External Air Is Available:
APU Bleed Air Switch ........................................................................OFF
Isolation Valve Switch .....................................................................OPEN
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