background image COND Condition CONS . Continuous CONST . Construction or constructed CPDLC Controller Pilot Data Link Communications CTC Contact CUST . Customs DA . Decision altitude DEG Degrees DEP Depart or Departure DER Departure end of the runway DH . Decision Height DIST Distance DLY Daily DP . Dew Point Temperature DPT Depth DTHR . Displaced Runway Threshold E . East or eastern longititude EB . Eastbound EMERG . Emergency ENE East - northeast EQPT . Equipment ESE East - southeast EST Estimate or estimated or estimation (message type designator) EXC Except FL Flight level FREQ . Frequency FRI . Friday FSS . Flight Service Station FST . First FT Feet (dimensional unit) G . Green GA . General aviation GLD Glider GND Ground GP . Glide Path GRVL . Gravel HEL Helicopter HGT Height or height above HLDG Holding HLP Heliport HVY Heavy IFR . Instrument Flight Rules ILS . Instrument Landing System IM Inner Marker INOP . Inoperative INT . Intersection KT . Knots L . Left (preceded by runway designator number to identify a parallel runway) LAT Latitude LDA Landing Distance Available LDG Landing LEN Length LGT Light or lighting LGTD . Lighted LOC Localizer LONG Longitude MAINT . Maintenance MBST . Microburst MIL Military MIN Minutes MNT Monitor or monitoring or monitored MON . Monday MOV . Move or moving or movement N . North NAVAID . Navigational aid NB . Northbound NDB Nondirectional Radio Beacon NE . Northeast NEB Northeast bound NM . Nautical Mile/s NNE North - northeast NNW . North - northwest NOV November NW . Northwest NWB . Northwest bound OBSC . Obscure or obscured or obscuring OBST . Obstacle OPN Open or opening or opened OPS Operations PAPI Precision Approach Path Indicator PARL . Parallel PAX Passenger/s PCL Pilot Controlled Lighting PCT Percent PERM . Permanent PJE . Parachute Jumping Activities PLA Practice Low Approach PPR Prior Permission Required PRN Pseudo - random Navigation PT Procedure Turn R . Red R . Right (preceded by runway designator number to identify a parallel runway) RAI . Runway Alignment Indicator RCL Runway Centerline - - Preflight