| 4C |
| None of the previous answers is correct |
| Any instrument, mechanism, equipment, part, apparatus, annex or accessory, including communication equipment, installed on or attached to the aircraft and not used or intended to be used for the operation or control of an aircraft in flight and which forms part of an airframe, engine or propeller |
| Any instrument, mechanism, equipment, part, apparatus, annex or accessory, including communication equipment, installed on or attached to the aircraft and not used or intended to be used for the operation or control of an aircraft in flight and which does not form part of an airframe, an engine or a propeller |
EN 