Coin

COIN - Counter-insurgency aircraft.

COLLECTIVE PITCH CONTROL - Used to change simultaneously the pitch of all of a helicopter rotor's blades to permit ascent or descent.

Many types flying close support or COIN (Counter Insurgency Warfare) missions were propeller powered types such as the O-1 and OV-10 Bronco FAC spotters, A-1 Skyraider, B-26 Invader, and AC-47[125] "Spooky" gunship.

There is another side to the partial-flap coin. The pilot who first learns to do such landings is more likely to use them as an option.

On the other side of the same coin, theoretical understanding without practice is not sufficient either.

DZUS FASTENER - ("Zoose") A generic term for any number of quick-acting, screw-type fasteners typically used for the securing of cowlings, inspection plates and other panels, requiring no special tool other than a slotted screwdriver or a coin, ...

Phalanx, Goalkeeper, Metal Storm - usually ship based, but has future applications on larger aircraft
COIN - Counter Insurgency
CSAR - Combat Search and Rescue
CV - Attack aircraft carrier - Conventionally powered ...

(Oscars did find their way into French hands against the Viet Minh after the war and other COIN roles elsewhere then!) This despite frightful losses at Nomonhan where the 1st, ...

See also: Flight, Aircraft, Landing, Plane, Night