21-CONTENTS
GUN Page 5 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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ____ Effectivity
_______ Page ___________
Adjustment/Test 501 ALL DUCT - AFT CARGO HEAT 21-44-09 Approved Repairs 801 ALL SWITCH - AFT CARGO OVERHEAT 21-44-04 Removal/Installation 401 ALL SWITCH - AFT CARGO TEMPERATURE 21-44-02 CONTROL Removal/Installation 401 ALL SWITCH - AFT CARGO UNDERFLOOR 21-44-07 HEAT CONTROL Removal/Installation 401 ALL VALVES - AFT CARGO HEAT 21-44-01 Removal/Installation 401 ALL
COOLING 21-50-00
_______
Component Location 101 ALL
Component Index
Component Location
21-CONTENTS
GUN Page 6 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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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___________
AIR CONDITIONING PACK SYSTEM 21-51-00
Description and Operation 1 ALL
General 1
Aspirator - Water 9
Bulb - Temperature, Compressor 9
Discharge
Collector - Water 10
Conditioner - Signal 10
Converter - Ozone, Catalytic 10
Heat Exchanger 8
Housing - Fan Diffuser and 8
Inlet
Machine - Air Cycle 8
Sensor - Airflow 10
Separator - Water 9
Switch - Overheat, Compressor 9
Discharge
Switch - Overheat, Pack 9
Discharge
Valve - Check, Compressor 9
Bypass
Valve - Flow Control and 1
Shutoff
Valve - Pack Dump (SMACCS) 8
Operation 10
Adjustment/Test 501 ALL
Ground Test 501
Inspection/Check 601 ALL
ASPIRATOR - WATER 21-51-11
Removal/Installation 401 ALL
Adjustment/Test 501 ALL
BULB - COMPRESSOR DISCHARGE 21-51-19
TEMPERATURE
Removal/Installation 401 ALL
COLLECTOR - WATER 21-51-25
Removal/Installation 401 ALL
CONDITIONER - AIRFLOW SIGNAL 21-51-17
Removal/Installation 401 ALL
21-CONTENTS
GUN Page 7 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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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___________
DUCTS - RAM AIR 21-51-12
Removal/Installation 401 ALL
Approved Repairs 801 ALL
FAN DIFFUSER AND INLET HOUSING 21-51-07
Removal/Installation 401 ALL
FILTER - FLOW CONTROL AND 21-51-13
SHUTOFF VALVE
Removal/Installation 401 ALL
HEAT EXCHANGER 21-51-03
Removal/Installation 401 ALL
Inspection/Check 601 ALL
Cleaning/Painting 701 ALL
MACHINE - AIR CYCLE 21-51-04
Removal/Installation 401 ALL
SCREEN - RAM-AIR 21-51-15
Removal/Installation 401 ALL
SENSOR - AIRFLOW 21-51-16
Removal/Installation 401 ALL
SWITCH - COMPRESSOR DISCHARGE 21-51-09
OVERHEAT
Maintenance Practices 201 ALL
SWITCH - PACK DISCHARGE OVERHEAT 21-51-08
Maintenance Practices 201 ALL
VALVE - COMPRESSOR BYPASS CHECK 21-51-06
Removal/Installation 401 ALL
VALVE - COOLING AIR CHECK 21-51-14
Removal/Installation 401 ALL
Inspection/Check 601 ALL
VALVE - FLOW CONTROL AND SHUTOFF 21-51-01
Removal/Installation 401 ALL
Adjustment/Test 501 ALL
VALVE - PACK DUMP (SMACCS) 21-51-02
Removal/Installation 401 ALL
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