Name	Explanation	Examples
P	Stays for Perekhvatchik (Interceptor) at the end of aircraft designation.	Yak-28P
P	Perekhodnyj, Transitional	P-2
P	Poplavkovyj, Floatplane	Like in NIAMI-1P
P	Passazhirskij, Passenger, like in PR-5
PAK	Pritsel Aviatsionnij Kollimatormij , Aviation Collimator Gunsight
Pe	Initials of Petlyakov Design Bureau;	Pe-2, Pe-8
Po	Initials of Polikarpov Design Bureau;	Po-2
PB	Dive bomberPikiruuschij Bombardirivschik	PB-100
PI	Cannon armed Fighter, Pushechnij Istrebitel	PI-1
Pioneers	Children's organization (age 10-15) created to grow young men with proper political orientation. Voluntary labour and fund raising was highly appreciated. Elements of scout/military training were included.	-
PM	Passenger aircraft with Maybach engine, Passazhirsky s Maybach'om	PM-1
PM	R-1 floatplane variant by Munzel, Poplavkovyj Munzelia	PM-2
PP	Postanocschik Pomech , 'Obstacle setter', ECM jammer	see Mi-10PP
PromVozdukh	Promushlennost Vozdukhoplavania , Aviation Industry, one of transitional Trusts in post-Civil War economy of Russia.
PS	Passenger, Passagirsky Samoliot	PS-84
PS	Search & Rescue, "Poiskovo - Spasatelnij	Be-12PS
PTA	Petersburg Brotherhood for Aviation, Peterburgskoe Tovarischestvo Aviatsii	PTA-1
PTsN	Engine-driven centrifugal charger, Privodnoj Tsentrobezhnij Nagnetatel	I-16TK
PVO	Anti-Aircraft Defence, ProtivoVozdushnaja Oorona
PVRD	Ramjet, Straight Flow Jet engine , Priamotochnyj Vozdushno-Reaktivnyj Dvigatel