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PA
|
passenger/public address
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PA/CI
|
passenger address / cabin interphone
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PAPI
|
precision approach path indicator
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PC
|
personal computer
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PCU
|
passenger control unit
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PCU
|
power control unit
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PDCU
|
panel data concentrator unit
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PDOS
|
powered door opening system
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PDS
|
primary display system
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PDF
|
primary display function
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PDU
|
power drive unit
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PF
|
pilot flying
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PFC
|
primary flight computer
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PFCS
|
primary flight control system
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PFD
|
primary flight display
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PIIC
|
passenger in-flight information computer
|
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PMA
|
permanent magnet alternator
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PMAT
|
portable access maintenance terminal
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PMG
|
permanent magnet generator
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PNEU
|
pneumatic
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PNF
|
pilot not flying
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POS
|
position
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PRAM
|
pre-recorded announcement machine
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press
|
pressure
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PRSOV
|
pressure regulating and shut-off valve
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pri
|
primary
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prox
|
proximity
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PSA
|
power supply assembly
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PSEU
|
proximity sensor electronics unit
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PSS
|
proximity sensor system
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PSU
|
passenger service unit
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ptr
|
printer
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PTT
|
push-to-talk
|
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QAR
|
quick access recorder
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QNH
|
air pressure at sea level
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RA
|
radio amplifier
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RAT
|
ram air turbine
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RBI
|
relative bearing indicator
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RCC
|
remote charge convertor
|
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rcvr
|
receiver
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RF
|
radio frequency
|
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RFU
|
radio frequency unit
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RIB
|
right inboard
|
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RLY
|
relay
|
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RMI
|
radio magnetic indicator
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ROB
|
right outboard
|
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RT
|
receiver-transmitter
|
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RTO
|
rejected take-off
|
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RTP
|
radio tuning panel
|
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RVR
|
runway visual range
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