A 747-400 MAINTENANCE MANUAL
R = REVISED, A = ADDED OR D = DELETED CHAPTER 21 F = FOLDOUT PAGE EFFECTIVE PAGES E1 PAGE 8 FEB 18/02 LAST PAGE
D633U101-E1
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
CHAPTER 21 - AIR CONDITIONING
TABLE OF CONTENTS_________________
Chapter
Section
Subject Subject_______ _______ Page____ Effectivity___________
AIR CONDITIONING 21-00-00________________
Description and Operation 1 ALL
Maintenance Practices 201 ALL
CONTAMINATION, OIL SMOKE/FUME 21-00-01
(REMOVAL) - AIR CONDITIONING
SYSTEM
Maintenance Practices 201 ALL
DISTRIBUTION 21-20-00____________
Component Location 101 ALL
Component Index
Component Location
MAIN DISTRIBUTION MANIFOLD 21-21-00
Description and Operation 1 ALL
CONNECTOR - GROUND SERVICE 21-21-03
Removal/Installation 401 ALL
VALVE - CONDITIONED AIR CHECK 21-21-01
Maintenance Practices 201 ALL
Removal/Installation 401 ALL
FLIGHT COMPARTMENT CONDITIONED AIR 21-22-00
DISTRIBUTION
Description and Operation 1 ALL
General 1
Valve - Windshield Air Shutoff 1
Operation 1
VALVE - FLIGHT DECK SHOULDER AIR 21-22-02
OUTLET
Removal/Installation 401 ALL
VALVE - WINDSHIELD AIR SHUTOFF 21-22-01
Removal/Installation 401 ALL
MAIN AND UPPER DECK CONDITIONED 21-23-00
AIR DISTRIBUTION
Adjustment/Test 501 ALL
DUCTS - AIR CONDITIONING SYSTEM 21-23-02
Approved Repairs 801 ALL
VALVE - MAIN DECK FIRE SHUTOFF 21-23-03
Removal/Installation 401 ALL
21-CONTENTS
GUN Page 1 Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
CHAPTER 21 - AIR CONDITIONING
TABLE OF CONTENTS_________________
Chapter
Section
Subject Subject_______ _______ Page____ Effectivity___________
VENTILATION 21-26-00
Description and Operation 1 ALL
General 1
Fan - Aft Cargo Ventilation 9
Fan - Bulk Cargo Ventilation 9
Fan - Flight Deck Ventilation 1
Fans - Forward Cargo 9
Ventilation
Stack - Lower Forward Cargo 9
Exhaust
Valve - Bulk Cargo Flapper 9
Valve - Forward Overboard 1
Adjustment/Test 501 ALL
CARD - ECS MISCELLANEOUS 21-26-02
Removal/Installation 401 ALL
FAN - AFT CARGO VENTILATION 21-26-12
Removal/Installation 401 ALL
FAN - BULK CARGO 21-26-08
Removal/Installation 401 ALL
FAN - FLIGHT DECK VENTILATION 21-26-06
Removal/Installation 401 ALL
FAN - FORWARD CARGO VENTILATION 21-26-10
Removal/Installation 401 ALL
SCREEN - BULK CARGO FAN 21-26-08
Maintenance Practices 201 ALL
SOLENOID - BULK CARGO FLAPPER 21-26-09
VALVE
Maintenance Practices 201 ALL
VALVE - FORWARD OVERBOARD 21-26-15
Removal/Installation 401 ALL
Cleaning/Painting 701 ALL
VALVE - LOWER FORWARD CARGO 21-26-17
OVERBOARD
Removal/Installation 401 ALL
VALVE - LOWER FORWARD CARGO 21-26-18
OVERBOARD BACK-UP
Removal/Installation 401 ALL
21-CONTENTS
GUN Page 2 Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
CHAPTER 21 - AIR CONDITIONING
TABLE OF CONTENTS
_________________
Subject
_______
VALVE - LOWER FORWARD CARGO OVERBOARD EXHAUST CHECK Removal/Installation CARGO COMPARTMENT CONDITIONED AIR DISTRIBUTION
Description and Operation General Valve - Cabin Shutoff Valve - Flow Regulating Operation
Adjustment/Test CARD - ECS FREIGHTER Removal/Installation CHECK VALVE - AFT CARGO COMPARTMENT CONDITIONED AIR Removal/Installation VALVE - CARGO TRIM AIR SHUTOFF
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