PART 4Airworthiness of Aircraft
CHAPTER 3Continuing airworthiness for Non-Part-21 aircraft
Extension of a national airworthiness review certificate of an aircraft in a controlled environment56.
(1)
The validity of a national airworthiness review certificate of an aircraft in a controlled environment may be extended by the continuing airworthiness management organisation which is managing the airworthiness of the aircraft.
(2)
The continuing airworthiness management organisation may extend the validity of a national airworthiness review certificate on a maximum of two occasions, for a period of 12 months on each occasion.
(3)
A national airworthiness review certificate may be extended only when the continuing airworthiness management organisation which is to extend it is satisfied that it is proper to do so.