787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Supplementary Procedures -
Adverse Weather
Copyright © The Boeing Company. See title page for details.
SP.16.14 D615Z003-TBC
Secure Procedure
Do the following steps after completing the normal Secure Procedure:
If the airplane will be attended:
PACK switches ......................................................AUTO F/O
Use normal air conditioning procedures, with all packs, trim air,
and recirculation fans on, to provide cabin heating.
If the airplane will not be attended, or if staying overnight at off-line
stations or at airports where normal support is not available, the flight
crew must arrange for or verify that the following steps are done:
OUTFLOW VALVE switches ................................ MAN F/O
OUTFLOW VALVE MANUAL switches ........... CLOSE F/O
Position the outflow valves fully closed to inhibit the intake of
snow or ice.
Wheel chocks ............................................ Verify in place C or F/O
Parking brake ..................................................... Released C
Reduces the possibility of frozen brakes.
Cold weather maintenance procedures for securing the airplane may
be required. These procedures are found in the approved Airplane
Maintenance Manual.
Hot Weather Operation
During extended ground operations prior to flight deck preparation,
consideration should be given to reducing the heat being generated on the
flight deck. Window heat, radar, and other electronic components which
contribute to a high temperature level on the flight deck may be turned off.
All the flight deck air outlets should be open.
August 14, 2009
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