The mnemonic lights, camera, action reminds pilots to turn the transponder to ALT before lifting off in controlled airspace. But did you know that the FAA recommends activating the transponder while on the ground? You may have been trained to put the transponder in STBY mode while taxiing. But this practice no longer satisfies the recommendations of the AIM (Aeronautical Information Manual).
The wording in the AIM regarding the use of transponders was modified last year. Regarding ground operations the AIM states: “Civil and military transponders should be turned to the “on” or normal altitude reporting position prior to moving on the airport surface to ensure the aircraft is visible to ATC surveillance systems.”
