OPERATIONS MANUAL

Air Systems
Air Conditioning Controls:
Maintenance panel
Lower lobe cargo conditioned air flow rate selector
(not on passenger aircraft)
LOW BOTH ⅔ of pack 2 & 3 air routed to lower aft & forward cargo compartments.
LOW AFT ⅔ of pack 2 air routed to lower aft cargo compartment.
LOW FWD ⅔ of pack 3 air routed to lower forward cargo compartment.
OFF No temperature regulation by pack system in lower cargo compartments.
HIGH FWD All pack 3 air routed to lower forward cargo compartment.
HIGH AFT All pack 2 air routed to lower aft cargo compartment.
Overhead panel
Cargo conditioned air flow rate selector
(on passenger aircraft)
OFF Conditioned air from pack 3 routed to cabin distribution system.
No temperature regulation by pack system in aft cargo compartment.
LO Conditioned air from pack 3 routed to cabin distribution system and
aft cargo compartment.
HI Conditioned air from pack 3 routed to aft cargo compartment.
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