(a) This part applies to repair stations that are certificated by the Federal Aviation Administration (FAA) pursuant to 14 CFR part 145, except for a part 145 certificated repair station located on a U.S. or foreign government military installation.(b) In addition to the terms in 49 CFR 1500.3 and 1540.5 , for purposes of this part, "large aircraft" means any aircraft with a maximum certificated takeoff weight of more than 12,500 pounds and "attended" aircraft means an aircraft to which access is limited to authorized individuals and property.