Editing NOTAM (section)

==Format==
The following describes ICAO NOTAMs. NOTAMs are published using all upper case letters. Some countries, such as the United States, may diverge from the following ICAO standards.

* The first line contains NOTAM identification (series, sequence number, and year of issue), the type of operation (NEW, REPLACE, or CANCEL), as well as a reference to a previously issued NOTAM (for NOTAMR and NOTAMC only).
* The "Q" line holds information about whom the NOTAM affects, along with a basic NOTAM description. This line can be encoded/decoded from tables defined by [[ICAO]]. This allows NOTAMs to be displayed electronically.
* The "A" line is the ICAO code of the affected aerodrome or [[flight information region|FIR]] for the NOTAM. The area of influence of the NOTAM can be several hundred kilometers from the originating aerodrome.
* The "B" line contains the start date and time, and the "C" line contains the finish date and time of the NOTAM. Fields "B" and "C" are in the format YYMMDDhhmm, with times given in [[UTC|Universal Co-ordinated Time]], also known as [[UTC]] or Zulu time.
* Sometimes a "D" line may be present. This gives a miscellaneous [[day|diurnal]] time for the NOTAM if the hours of effect are less than 24 hours a day, e.g., [[parachute]] dropping exercises tend to occur for short periods of a few hours during the day, but may be repeated over many days.
* The "E" line is the full NOTAM description. It is in English but can be heavily abbreviated. These abbreviations can be encoded/decoded by tables defined by [[ICAO]].
* When present, "F" and "G" lines detail the height/altitude restrictions of the NOTAM. Typically SFC means surface height or ground level, and UNL is unlimited height. Other heights are given in feet, [[flight level]], or a combination of the two.