CHAPTER
36
Pneumatic
CHAPTER 36 Pneumatic
36-CONTENTS
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PNEUMATIC -INTRODUCTION
Purpose
The pneumatic system supplies air from one of these sources to the user systems:
*
Engines
*
Auxiliary power unit (APU)
*
Ground air.
The user systems use the air supply for these functions:
*
Start the APU
*
Start the engines
*
Supply aft and bulk cargo heat
*
Cabin pressurization and air conditioning
*
Prevent ice from forming on the wing slats
*
Supply air flow across the total air temperature probe
*
Pressurize the hydraulic reservoirs
*
Pressurize the potable water tanks
*
Supply power to the air driven hydraulic pumps.
Abbreviations and Acronyms
*
ACIPS -airfoil and cowl ice protection system
*
ACMS -airplane condition monitoring system
*
ADIRU -air data inertial reference unit
*
ADP -air driven pump
*
AFDS -autopilot flight director system
*
AGS -air ground system
*
AIMS -airplane information management system
*
APL -airplane
*
APU -auxiliary power unit
*
APUC -auxiliary power unit controller
EFFECTIVITY
BEJ ALL
*
ARINC -aeronautical radio, inc.
*
ASC -air supply control
*
ASCS -air supply control system
*
ASCPC -air supply cabin pressure controller
*
ASG -arinc signal gateway
*
bld -bleed
*
CGO -cargo
*
cl -closed
*
CMCF -central maintenance computing function
*
CMCS -central maintenance computing system
*
COMPT -compartment
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CPC -cabin pressure control
*
CPCS -cabin pressure control system
*
CPRSR -compressor
*
CTC -cabin temperature controller
*
DDG -dispatch deviations guide
*
DLODS -duct leak and overheat detection system
*
EAI -engine anti-ice
*
EAS -engine air supply
*
ECS -environmental control system
*
ECSMC -environmental control system miscellaneous card
*
EEC -electronic engine control
*
EFIS -electronic flight instrument system
*
EICAS -engine indicating and crew alerting system
*
ELMS -electrical load management system
*
ENG -engine
*
FAMV -fan air modulating valve
*
FMCS -flight management computing system
*
FS -manifold flow sensor
*
FSEU -flap/slat electronics unit
*
HP -high pressure
*
HPC -high pressure compressor
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PNEUMATIC -INTRODUCTION
*
HPFAC -high pressure fan air controller * WAI -wing anti-ice
*
HPSOV -high pressure shutoff valve * WES -warning electronic system
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HYD -hydraulic * WOW -weight on wheels
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HYDIM -hydraulic interface module
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INST -instrument
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IP -intermediate pressure
*
IPCV -intermediate pressure check valve
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ISLN -isolation
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isol -isolate
*
lch -latch
*
LW -left wing
*
MANF -manifold
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OPAS -overhead panel ARINC 629 system
*
OPN -operation
*
OVHT -overheat
*
POS -position
*
PRESS -pressure
*
PRESSN -pressurization
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PRI -primary
*
PRSOV -pressure regulating and shutoff valve
*
PRSOVC -pressure regulating and shutoff valve controller
*
PSEU -proximity sensor electronic unit
*
PWR -power
*
RVDT -rotary variable differential transformer
*
SEC -secondary
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SNSR -sensor
*
STBY -standby
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STRTR -starter
*
TAT -total air temperature
*
TEMP -temperature
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TM -manifold dual temperature sensor
*
VCU -valve control unit
*
VLV -valve
EFFECTIVITY BEJ ALL 36-00-00
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777 AIRCRAFT MAINTENANCE MANUAL
PNEUMATIC -INTRODUCTION
EFFECTIVITY BEJ ALL 36-00-00
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D633W101-BEJ Jan 05/2002
PNEUMATIC -GENERAL DESCRIPTION
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