CHAPTER 21
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AIR CONDITIONING
TABLE OF CONTENTS
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SUBJECT_______ CH/SE/SU _ PAGE EFFECTIVITY________ C ____ ___________
System Description 1 ALL
Cabin Air Distribution and 1 ALL
Recirculation
Cockpit Air Ventilation 1 ALL
Lavatory/Galley Ventilation 1 ALL
Individual Air Distribution 1 ALL
Avionics-Equipment Ventilation 2 ALL
System
Cargo Compartment Ventilation 2 ALL
DISTRIBUTION 21-20-00
_____________
MAINTENANCE PRACTICES 201 ALL
Removal of the Air-Conditioning 201 ALL
Distribution Ducts
Installation of the 208 ALL
Air-Conditioning Distribution
Ducts
DISTRIBUTION 21-20-00
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INSPECTION/CHECK 601 ALL
General Visual Inspection of the 601 ALL
Riser Ducts in the Passenger
Compartment
General Visual Inspection of 614 ALL
Lavatory and Galley Ventilation
Ducting (Zones 210 to 260)
AIR DISTRIBUTION AND RECIRCULATION 21-21-00 DESCRIPTION AND OPERATION 1 ALL
General 1 ALL
Cabin Air Distribution and 1 ALL
Recirculation
Cockpit Air Ventilation 1 ALL
Component Location 1 ALL
System Description 1 ALL Air Supply and Ducting for 1 ALL Passenger Cabin Emergency Ram Air Inlet 7 ALL LP Ground Connector 7 ALL Cockpit Distribution 7 ALL Mixing Unit 9 001-049, 051-099
101-149, 151-199 201-299, 301-399 Mixing Unit 9 401-499,
21-CONTENTS Page 2 Aug 01/05 R CES
CHAPTER 21
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AIR CONDITIONING
TABLE OF CONTENTS
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SUBJECT_______ CH/SE/SU _ PAGE EFFECTIVITY________ C ____ ___________
Air Recirculation 11 ALL Power Supply 11 ALL Component Description 11 ALL Cabin Recirculation Fans 11 ALL Check Valves 14 ALL Recirculation Filter 14 ALL
Operation/Control and Indicating 15 ALL Operation of Cabin Recirculation 15 ALL Fans Controls and Indications 17 ALL
AIR DISTRIBUTION AND RECIRCULATION 21-21-00
ADJUSTMENT/TEST 501 ALL Operational Test of the Cabin 501 ALL Recirculation Fans 14HG and 15HG.
FILTER - RECIRCULATION 21-21-41
SERVICING 301 ALL Scheduled Replacement of the 301 ALL Recirculation Filter 4012HM (4013HM)
FILTER - RECIRCULATION 21-21-41
REMOVAL/INSTALLATION 401 ALL Removal of the Recirculation 401 ALL Filter 4012HM (4013HM) Installation of the Recirculation 405 ALL Filter 4012HM (4013HM)
CHECK VALVE 21-21-42
REMOVAL/INSTALLATION 401 ALL Removal of the Recirculation Check 401 ALL Valve 4020HM (4021HM) Installation of the Recirculation 405 ALL Check Valve 4020HM (4021HM)
MIXER UNIT 21-21-43
REMOVAL/INSTALLATION 401 ALL Removal of the Mixer Unit 401 ALL Installation of the Mixer Unit 413 ALL
AIR OUTLET - INDIVIDUAL, COCKPIT 21-21-44
REMOVAL/INSTALLATION 401 ALL Removal of the CAPT (F/O) 401 ALL Individual Air-Outlet (4500HM, 4501HM) Installation of the CAPT (F/O) 404 ALL Individual Air-Outlet (4500HM, 4501HM) Removal of the Third (Fourth) 406 ALL
21-CONTENTS Page 3 Feb 01/05 R CES
CHAPTER 21
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AIR CONDITIONING
TABLE OF CONTENTS
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SUBJECT_______ CH/SE/SU _ PAGE EFFECTIVITY
________ C ____ ___________ Occupant Individual Air-Outlet (4502HM, 4503HM) Installation of the Third (Fourth) 409 ALL Occupant Individual Air-Outlet (4502HM, 4503HM)
GRID - COCKPIT AIR SUPPLY DUCT 21-21-49
CLEANING/PAINTING 701 ALL
Cleaning of the Cockpit Air-Supply 701 ALL
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