QFE  A.method.of.setting.the.altimeter.to.compensate. for.changes.in.barometric.pressure.and.runway. elevation. Pilot receives information from airfield 
and.adjusts.his.altimeter.accordingly.and.it.will. read.zero.altitude.at.touchdown.on.the.runway. 
QM  Quality.Management 
QMP  Quality.Management.Plan 
QNE  The.method.of.setting.the.altimeter.to.the. standard.atmosphere.datum-29.92.inches.of. mercury.(1,013.25.mb)..This.setting.is.used.in.. the.United.States.airspace.by.all.aircraft.above.. FL.180. 
QNH  The.more.common.method.of.setting.the.altimeter. to.compensate.for.changes.in.barometric. pressure. Pilot receives information from airfield, adjusts.his.altimeter.accordingly.and.the.altimeter. will read airfield elevation at touchdown. 
QOP  Quality Operating Procedures 
QoS  Quality.of.Service 
QRH  Quick.Reference.Handbook 
QTY  Quantity 
QUAD  Quadrant 
Quadrantal Error  Error.in.the.relative.bearing.caused.by.the. distortion of the received radio signal (RF fields) by.the.structure.of.the.aircraft. 
R  (.1.).Right.. (.2.).Route.Tuned.NAVAID.. (.3.).Rudder 
RA  (.1.).Resolution.Advisory.(generated.by.TCAS).. (.2.).Radio.Altimeter.. (.3.).Routing.Area.. (.4.).Radio.Altitude:.The.absolute.altitude.(height). above.the.ground..Measured.by.a.radio.altimeter. system. 
RAA  Regional.Airline.Association 

Rabbit Tracks  Rabbit.Tracks,.or.running.rabbits,.refer.to.the. 
distinctive.display.produced.by.another.(alien. 
radar).radar.system.transmission. 
RAD  (.1.).Radial.. 
(.2.).Radio.. 
(.3.).Rapid.Application.Development 
Radar  Radio.Detecting.and.Ranging..A.system.that. 
measures.distance.and.bearing.to.an.object. 
Radar Mile  The.time.interval.(approximately.12.359. 
microseconds) required for radio waves to travel 
one.nautical.mile.and.return.(total.of.2.nmi). 
Radial  A line of direction going out from a VOR station 
measured.as.a.bearing.with.respect.to.magnetic. 
north. 
RAE  Regional.Airworthiness.Engineer.(Canadian) 
Radome  The.radome.is.the.protective.cover.on.the.aircraft. 
nose that fits over the weather radar system 
antenna..The.radome.is.transparent.at.radar. 
frequencies. 
RAF  Requirements Analysis Folder 
RAI  Radio.Altimeter.Indicator 
RAIM  Receiver.Autonomous.Integrity.Monitoring