Many nontower airports have pilot-controlled lighting (PCL), which allows pilots to turn on the runway lights and to select the desired intensity. Within a five-mile radius of the airport, pilots activate PCL by keying the microphone button with the radio tuned to Unicom frequency. Once activated, the lights remain illuminated for 15 minutes.
Hea teada
U.S. and ICAO: Expression for: aircraft radio control of aerodrome lighting (ARCAL)
