FIR
n. countablen. Stands for Flight Information Region. A specific area of the sky where air traffic controllers manage and guide planes. Pilots must talk to the controllers in charge of that area to stay safe.
n. Abbreviation for Flight Information Region. A specified region of airspace in which flight information and alerting services are provided. Defined by international agreement under ICAO standards.
The pilot contacted the next FIR as they crossed the border.
As the aircraft entered the London FIR, the crew established communication with the regional controllers to receive updated weather reports.
Oceanic FIRs cover vast areas of international waters where radar coverage may be limited, requiring pilots to provide regular position reports via high-frequency radio or satellite links.
Often used as an acronym for 'Flight Information Region'; typically appears in technical aviation contexts or flight planning.