AIM 8/15/19  1/30/20 5 − 1 − 7 Preflight TBL 5 − 1 − 2 Contractions Commonly Found in NOTAMs A ABN .......... Aerodrome Beacon ACFT ......... Aircraft ACT .......... Active ADJ .......... Adjacent AGL .......... Above Ground Level ALS .......... Approach Light System AP ........... Airport APN .......... Apron APP .......... Approach control office  or  approach control  or  approach control service ARST ......... Arresting  (specify (part of) aircraft arresting equipment) ASDA ......... Accelerate Stop Distance Available ASPH ......... Asphalt AUTH ........ Authorized  or  authorization AVBL ......... Available  or  availability AVGAS ....... Aviation gasoline AWOS ........ Automatic Weather Observing System AZM.......... Azimuth B BA ........... Braking action BCN .......... Beacon  (aeronautical ground light) BCST ......... Broadcast BDRY......... Boundary BLDG ......... Building BLW.......... Below BTN .......... Between C C............. Center  (preceded by runway designator number to identify a parallel runway) CD ........... Clearance delivery CIV........... Civil CL ........... Centerline CLSD ......... Close  or  closed  or  closing COM ......... Communication CONC ........ Concrete COND ........ Condition CONS ......... Continuous CONST ....... Construction  or  constructed CPDLC ........ Controller Pilot Data Link Communications CTC .......... Contact CUST ......... Customs D 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 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 F FL............ Flight level FREQ ......... Frequency FRI ........... Friday FSS........... Flight Service Station FST........... First FT............ Feet  (dimensional unit) G G............. Green GA ........... General aviation GLD .......... Glider GND.......... Ground GP ........... Glide Path GRVL......... Gravel H HEL .......... Helicopter HGT .......... Height  or  height above HLDG ........ Holding HLP .......... Heliport HVY.......... Heavy I IFR ........... Instrument Flight Rules ILS ........... Instrument Landing System IM............ Inner Marker INOP ......... Inoperative INT........... Intersection K KT ........... Knots L 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 M MAINT ....... Maintenance MBST ......... Microburst MIL .......... Military MIN .......... Minutes MNT.......... Monitor  or  monitoring  or  monitored MON ......... Monday