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9 Phase margin [coupling between FCS and structure].
10 Pilot monitoring.
P m Polar maritime.
P/M Presentation/manoeuvring (simulator).
PMA 1 Projected map assembly.
2 Parts manufacturing [or manufacturer] approval, or
authority.
3 Permanent-magnet alternator.
4 Pressurized mating adapter (docking).
5 Portable maintenance aid.
6 Positive mental attitude (US).
7 Propagation management and assessment
[algorithms].
8 Post-mission analysis.
P-MA Political-Military Affairs (US).
PMA/A Probable missed approach per arrival.
PMADS Pedestal-mounted air-defense [missile] system.
PMAI Prime mission aircraft inventory.
PMAS Performance measurement analysis system, for
assessing contractors and management (DoD).
PMAT Portable maintenance access terminal.
PMAWS Passive missile approach warning system.
P max 1 Maximum power (electronic).
2 Maximum pressure (usually MEOP).
PMB Phare Management Board.
PMBCC Plastic-media blast corrosion control.
PMBM Permanent-magnet brushless motor.
PMC 1 Plastic/metal composite sandwich, usually two
metal skins bonded to low-density core.
2 President of Mess Committee (RAF).
3 Maximum continuous power (F).
4 Polymer/matrix composite.
5 Power management control.
6 Performance management computer (S adds
“system”).
7 Personal multimedia communications.
8 Provisional memory cover.
9 Private military [including air] companies.
10 PCI mezzanine card.
PMCS Portable mission control station (UAV).
PMD 1 Projected map display.
2 Maximum take-off power (F).
3 Panel-mounted display.
4 Programme management directive.
PMDB Production management[s] data base.
PMDS Projected-map display set.
PME 1 Professional military education (US).
2 Precision-measurement equipment [L adds laboratory]
(USAF).
PMF Processeur militaire Français.
PMFD Pilot, or primary, or principal, multi-function
display.
PMFT Post-maintenance flight test.
PMG Permanent-magnet generator.
PMH Patrol missile hydrofoil (US Navy).
PMI 1 Payload margin indicator.
2 Performance management indicator.
3 Principal maintenance inspector (FAA).
4 Planned maintenance interval.
5 Polar moment of inertia.
PMIRR Pressure-modulated IR radiometer.
PMM Performance monitor module.
PMMA Poly-methylmethacrylate.
pneumatic
PMN Lead/magnesium niobate [-PT adds lead
titanate].
PMO 1 Program(me) management office.
2 Principal medical officer.
3 Prime maintenance organization[s].
PMOP Phase modulation on pulse.
PMOS Positive (p-type) metal-oxide silicon, or semiconductor.
PMP 1 Program management proposal.
2 Propulsion modernization program.
3 Premodulation processor.
4 Provost Marshal prohibited (RAF).
PMPS Portable mission-planning system (USAF).
PMQC Purchase-material quality control (UK, quality
assurance).
PMR 1 Pacific Missile Range, from Vandenberg
(WTR) and Pt Mugu (US); F adds Facility, at Kauai,
Hawaii, and Kwajalein Atoll.
2 Proton magnetic resonance.
3 Portable MLS receiver.
4 Private mobile radio.
5 Permit Maintenance Release [Permit to Fly] (CAA).
6 Product material release.
7 Provost Mershal restricted (RAF).
PMRAFNS Princess Mary’s RAF Nursing Service
(UK).
PMRT Program management responsibility transfer
(DoD).
PMS 1 Performance/power/programme management
system.
2 Projected map system (or subsystem).
3 Personnel Management Squadrons (RAF).
4 Performance measurement system (of programme).
5 Process and materials specifications (manual).
6 Poor-man solution.
PMSP Parallel-module signal processor.
PMST Project-management support team.
PMSV Pilot-to-metro service.
PMTC Pacific Missile Test Center.
PMU Maximum contingency power (F).
PN 1 See pseudonoise.
2 Performance number.
3 Prior notice.
4 Pursuit, night (USA 1919–24).
5 Pilot’s Notes [publication for each type].
P/N Part number.
PNA Point of no alternate.
PNB Pilot/navigator/bomb aimer (former RAF aircrew
grade, higher than SEG).
PNC Pneumatic nozzle control.
PNCP Peripheral node control point (SNA).
PNCS Performance and navigation computer system.
PND 1 Pilot numerical display, including distance to
go, G/S.
2 Primary navigation display.
PNdB Perceived noise decibels (see noise).
PNDC Pakistan National Development Complex.
pneud, pneudraulic Combined hydraulic and pneumatic
operation.
pneumatic 1 Air-operated; term usually reserved for
services taking very small flow at high pressure energized
by shaft-driven compressor or one-shot bottle.
Ambiguously also often used for services taking very large
502