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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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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