787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Air Systems -
Controls and Indicators
Copyright © The Boeing Company. See title page for details.
2.10.2 D615Z003-TBC
Off (AUTO not visible) –
• both forward equipment cooling supply fans, flight deck supply fan and
vent fan are commanded off
• both the smoke/override valve and the flight deck isolation valve are
commanded open
• forward cargo heat becomes inoperative
[Option – Forward cargo A/C]
• forward cargo air conditioning becomes inoperative
• OVRD illuminates
OVRD (illuminated amber) – SMOKE/OVRD mode is operating because:
• off is selected manually
• both forward equipment cooling supply fans fail, or
• the smoke/override mode is automatically selected by the smoke detection
system
• selects the target flight deck temperature
[Option – English / Metric units]
• turning the control toward C or W sets the desired temperature between
65° F (18° C) and 85° F (29° C). Mid position (12 o’clock) sets
approximately 75° F (24° C).
AUTO – the pack is automatically controlled.
Off (AUTO not visible) – cabin air compressors are commanded off.
OFF illuminated (amber) – both associated cabin air compressors are not running:
• automatically during engine start
• automatically due to a pack or compressor outlet high temperature, or
• OFF is manually selected
ON – the trim air valve is commanded open.
Off (ON not visible) –
• the trim air valve is commanded closed, and
• FAULT illuminates
FAULT illuminated (amber) –
• the trim air valve is failed closed
• the trim air valve is commanded closed because of a zone supply duct
overheat, or
• the TRIM AIR switch is selected off
2
Flight Deck Temperature (FLT DECK TEMP) Control
3
PACK Switches
4
TRIM AIR Switches
August 14, 2009
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