Definition
KLMU is the four-letter ICAO airport identifier for Monroe Regional Airport, a public-use, towered airport serving Monroe, Louisiana. The 'K' prefix denotes airports in the contiguous United States under the ICAO location indicator system, while 'LMU' is the unique three-letter code historically associated with Monroe and also used as its FAA and IATA identifier (LMU vs. MLU usage may vary; the FAA/IATA code is MLU, while ICAO is KMLU — see note).
Plain English
It is the international code used to identify Monroe Regional Airport in Louisiana on flight plans, charts, and air traffic systems.
Context Anchor
Seen in FAA instrument procedure material, airport references, and flight planning where an airport may be identified by a code instead of its full name.
Derivation
The 'K' prefix is assigned by ICAO to airports in the lower 48 United States. The remaining letters form a unique identifier for the specific airport. Knowing the 'K' rule helps a pilot quickly recognize a U.S. airport code on any chart or flight plan.
Why Pilots Care
Pilots use ICAO identifiers when filing IFR flight plans, programming avionics (FMS/GPS), and reading approach plates. Using the wrong identifier can route the aircraft or flight plan to the wrong airport.
Intuition Check
Do not treat KLMU as a word to interpret by sound. It is an assigned airport code that points to a specific airport in this source context.
Example Sentence 1
The pilot filed the IFR flight plan with KLMU as the destination for the leg into Monroe.
Example Sentence 2
Sectional charts list Monroe Regional Airport under the identifier KLMU.