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P1 - Pilot in command.
P2 - Co-pilot; only valid in logbooks if the aircraft requires
a co-pilot to operate legally (so not appropriate for PPLs 'sharing'
flights in single-engine aircraft).
Pan - international radio call signalling urgency.
PAPI - precision approach path indicator, a system of coloured
lights installed at the approach end of a runway which provides visual
guidance to the correct glidepath. A successor to VASI, below.
PAR - precision approach radar. Primary radar equipment showing
an air traffic controller the height, track and range of an aircraft
on final approach, enabling him to guide it to a landing.
pax - passengers.
PED - portable electronic devices.
PFA - Popular Flying Association, the UK homebuilt and antique
aircraft organisation.
PFD - primary flight display
Phonetic Alphabet - A - Alpha (Al fah); B - Bravo (Brah voh)
C - Charlie (Char lee); D - Delta (Dell tah)
E - Echo (Eck oh); F - Foxtrot (Foks trot)
G - Golf (Golf); H - Hotel (Hoh tell)
I - India (In dee ah); Juliett (Jew lee ett)
K - Kilo (Kee loh); L - Lima (Lee mah)
M - Mike (Mike); N - November (No vem ber)
O - Oscar (Oss cah); P - Papa (Pah pah)
Q - Quebec (Keh beck); R - Romeo (Roh me oh)
S - Sierra (See air rah); T - Tango (Tang goh)
U - Uniform (You nee form); V - Victor (Vik tah)
W - Whiskey (Wiss key); X - X-ray (Ecks ray)
Y - Yankee (Yang kee); Z - Zulu (Zoo loo)
PIC - pilot-in-command (also styled P1).
PINS - Pipeline Inspection Notification System.
PIO - pilot-induced oscillation. An undulating flight path
brought about by over-controlling.
PLN - flight-plan
PMS - performance management system.
PNR - point of no return.
POB - (number of) persons on board. Also SOB, souls on board.
POC - proof-of-concept
POH - pilot's operating handbook, an aircraft's 'owner's
manual'.
Pooley's - annually-published flight guide to United Kingdom
and Ireland, named after its creator and publisher Bob Pooley.
PPG - powered paraglider.
PPL - Private Pilot's Licence. Also PPL(H) for helicopters,
PPL(SLMG) for self-launched motor gliders.
PPO - prior permission only. Certain airfields or events
require advance notification (by telephone, for example) of your
intended arrival. Also PNR, prior notice required, and PPR, prior
permission required.
PROB - probability percentage, term used in Met reports.
procedure turn - manoeuvre which reverses the direction of an
aircraft's flight during an instrument approach procedure to enable it
to intercept the final approach course.
psi - pounds per square inch, a measurement of pressure.
PTT - press-to-transmit (switch) on an aircraft's control wheel
or stick enabling the pilot to make RT transmission 'hands on' via a
headset microphone.
Purple Airspace - special temporary airways created for flights
by certain members of the royal family, notified by NOTAM.
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