AIRCRAFT ABBREVIATIONS

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phi Bank Angle
phi N Nominal Bank Angle
pH Acidity or Alkalinity
P Pressure
P Purple
P Roll Rate
P.ALT Profile Altitude
P.CLB Profile Climb
P.DES Profile Descent
P.EPR Profile EPR
P.MACH Profile Mach
P.N1 Profile N1
P.SPD Profile Speed
P(-+ OFF) "Polarity (minus, plus, off)"
P/B Pushbutton
P/BSW Pushbutton Switch
P/C Printed Circuit
P/L Payload
P/P ROM Preprocessor ROM
Pa Pascal
PA Passenger Address
PA Public Address
PA AMP Passenger Address Amplifier
PAL Programmable Array Logic
PAR Precision Approach Radar
PARAM Parameter
PARK Parking
PAS Pitch Attitude Sensor
PATS Passenger Air-to-Ground Telephone System
PAX Passenger
PAX PAX Announcement Entertainment & Service Multiplex Sys
PB Policy Board
PBE Protective Breathing Equipmemt
PBM Power Plant Build-up Manual
PBSW Pushbutton Switch
PC Pack Controller
PC Packing Card
PC Personal Computer
PCA Portland Cement Association
PCA Positive Control Airspace
PCB Printed Circuit Board
PCD Performance Compliance Document
PCE Personal Consumption Expenditures
PCF Passenger Cum Freighter
PCM Power Conditioning Module
PCM Pulse Code Modulation
PCT Percent
PCU Passenger Control Unit
PCU Power Control Unit
PCU Power Controller Unit
PD Pitch Diameter
PD Principle Diagram
PDC Panel Display Catalog
PDC Procurement Data Card
PDDC Provisioning Descriptive Data Card
PDM Post Delivery Modification Material
PDO Power Door Opening
PDRC Procurement Data Reference Card
PDU Power Drive Unit
PE HP Stage Air Pressure
PED Pedestal
PEF Pylon Extension Fairing
PEM Performance Engineers Manual
PEP Performance Engineers Programs
PERC Percussion
PERF Performance
PERM Permanent
PES Passenger Entertainment (System)
PES Passenger Entertainment System
PES Production Engineering Specification
PESAR Passenger Entertainment System Audio Reproducer
PESMMUX Passenger Entertainment System Main Mux
PF Pilot Flying
PF Power Factor
PFD Primary Flight Display
PFEV Power Failure Event
PFIN Power Failure Interrupt
PG Page
PG BUS Program Bus
PH Phase
PHA Preliminary Hazard Analysis
PHC Probe Heat Computer
PHR Pounds per Hour
PI Procedure Turn to an Intercept
PIA Peripheral Interface Adapter
PIA Programmable Interface Adapter
PIH Pressure Interstage Hydraulic (PW eng)
PIN PROG Pin Programming
PIPC Power Plant Illustrated Parts Catalog
PIR Pressure Interstage Return
PIREP Pilot Reports
PIU Passenger Information Unit
PIX Picture
PK Pink
PL Plate
PL Plug
PLATF Platform
PLCRD Placard
PLS Pulse
PLT Pilot
PLYWD Plywood
PM Phase Modulation
PM Pounds per Minute
PMA Parts Manufacturing Approval
PMA Permanent Magnet Alternator
PMC "Power Management Control, Controller"
PMC "Power Management Control,controller"
PMC Process Material Control
PMDB Production Management Data Base
PMG Permanent Magnet Generator
PMP Performance Monitoring Program
PMP Primary Maintenance Process
PMP Pump
PMR Performance Maintenance Recorder
PMS Process and Material Specification
PMUX Power Plant Multiplexer
PMUX Propulsion Multiplexer
PN Part Number
PNEU Pneumatic
PNF Pilot Non Flying
PNL Panel
PNP Positive-Negative-Positive
PO Pickoff
PO Purchase Order
POB Pressure-Off Brake
POR Point of Regulation
POS Position
POST Power on Self Test
POT Potentiometer
PPB Provisioning Parts Breakdown
PPBU Power Plant Build Up
PPC Phosphor Protection Circuit
PPDC Provisioning Procurement Data Card
PPDES Product Performance Data Exchange Specifications
PPI Plan Position Indicator
PPIPC Power Plant IPC
PPM Parts per Million
PPM Performance Programs Manual
PPM Pulse Position Modulation
PPOS Present Position
PPU Position Pickoff Unit
PQAS Program Quality Assurance System
PR Power Ready Relay
PR Pressure
PR Progress Meeting
PR Regulated Pressure (downstream of bleed valve)
PRAM Prerecorded Announcement and Music
PRB Probe
PRCSG Processing
PRCSR Processor
PREAMP Preamplifier
PRECOOL Precooler
PRED Prediction
PREREC Prerecorded
PRES POS Present Position
PRESEL "Preselection, Preselector"
PRESS "Pressure, Pressurization, Pressurize"
PREV Previous
PRF Interrogation Rate
PRGM Program
PRI Priority
PRIM Primary
PRL Parallel
PROC Procedure
PROC T Procedure Turn
PROF Profile
PROG "Program, Programming"
PROG Progress
PROJ Projector
PROM Programmable Read Only Memory
PROS Present Position
PROT Protection
PROX Proximity
PRPHL Peripheral
PRR Power Ready Relay
PRSRZ Pressurize
PRSRZG Pressurizing
PRV Pressure Regulating Valve
PS Process Solution
PSCU Proximity Switch Control Unit
PSDU Power Supply Decoupling Unit
PSI Pound per Square Inch
PSIA Pounds per Square Inch Absolute
PSIC Proximity Sensor Interface Card
PSIG Pounds per Square Inch Gage
PSIU Passenger Service Information Unit
PSNR Positioner
PSQM Propulsion System Quality Management
PSS Passenger Services System
PSU Passenger Service Unit
PSU Power Supply Unit
PSUD Passenger Service Unit Decoder
PSV Planned Shop Visit
PT Point
PT Switching Pressure of HP Valve
PT CODE Part Code
PTC Positive Temperature Coefficient
PTDC Provisioning Technical Data Card
PTM Performance Training Manual
PTP Programming and Test Panel
PTR Printer
PTR Push to Reset
PTT Push to Test
PTT Push-to-Talk
PTT Push-to-Test
PTU Power Transfer Unit
PTU Power Transformer Unit
PU Panel Unit
PU Parts Usage
PU Pick Up
PURS Purser
PVC Polyvinyl Chloride
PVD Para Visual Director
PVI Paravisual Indicating
PVIS Passenger Visual Information System
PW Pratt & Whitney
PW Pratt and Whitney
PWR Power
PYL Pylon
P/N Part Number
PADS Pneumatic Air Distribution System
PBIT Power-Up Built-in Test
PBSELV Park Brake Selector Valve
PCDM Primary Contactor Driver Module
PCDS Primary Contactor Driver System
PCOS Power Cowl Opening System
PCPU Primary COS Power Unit
PDCS Power Distribution Control System
PDL Portable Data Loader
PDMC Power Distribution Maintenance Computer
PDMI Power Distribution Maintenance Interface
PEDMU Primary Electrical Distribution Management Unit
PEPDC Primary Electrical Power Distribution Center
PESC PES Controller
PFIS Passenger Flight Information System
PFQ Preselected Fuel Quantity
PFR Post Flight Report
PFTU Pedal Feel and Trim Unit
PIM Programming and Indication Module
PIN PROG Pin Programming
PISA Passenger Interface and Supply Adapter
PLA Power Light Adapter
PMAT Portable Multipurpose Access Terminal
PMM Personalization Memory Module
PMU Power Management Unit
PNR Part Number
POXIP Passenger Oxygen Indication Panel
PRE-EMPT Pre-emptive
PRES POS Present Position
PWCU Potable Water Control Unit
PWIP Potable Water Indication Panel
PWM Pulse Width Modulator
PWS Predictive WindShear
PWSP Potable Water Service Panel
PCT Probe Compensator Temperature
PED Portable Electronic Device
PU Processing Unit
P/Y Premium Economy Class
PDFU Pedal Damping and Friction Unit
PDOS Power Door Opening System
PERS Personal
PHD Protruding Head
PHMU Power Health Monitoring Unit
PKI Public Key Infrastructure
PKK Power Plant Kit
POM Point of Measurement
PORT Portable
PROCSR Processor
PRSOV Pressure Regulating and Shut-Off Valve
PSD Protected Switch Device
PCE PreCooler Exchanger
PIM Passive InterModulation
PWS Potable Water System

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