Commonwealth Numbered Regulations

1988 NO. 158 CIVIL AVIATION REGULATIONS - REG 48

48. (1) Where a maintenance release in respect of an aircraft ceases to be in
force by virtue of an endorsement made under subregulation 47 (1), the
maintenance release shall again commence to be in force if:

   (a)  where the endorsement refers to a requirement or condition in respect
        of the maintenance of the aircraft not having been complied with-there
        is entered on the maintenance release or other document on which the
        endorsement was made a certification, in accordance with a system of
        certification instituted under regulation 34, that the maintenance to
        which the requirement or condition relates has been completed;

   (b)  where the endorsement refers to the aircraft having suffered major
        damage or having developed a major defect-there is entered on the
        maintenance release or other document on which the endorsement was
        made a certification, in accordance with a system of certification
        instituted under regulation 34, that the maintenance required to
        remedy the damage or the defect, as the case may be, has been
        completed;

   (c)  where the endorsement refers to the aircraft having had imposed on it
        abnormal flight or ground loads-there is entered on the
        maintenance release or other document on which the endorsement was
        made a certification, in accordance with a system of certification
        instituted under regulation 34, that the maintenance required to be
        carried out to check whether that imposition has caused any damage to
        the aircraft, and to remedy any damage so caused, has been completed;
        or

   (d)  where the endorsement relates to the flight characteristics of the
        aircraft or the operating characteristics of an aircraft component, or
        system of aircraft components, installed in the aircraft-there is
        entered on the maintenance release or other document on which the
        endorsement was made a certification, in accordance with a system of
        certification instituted under regulation 34, that the maintenance
        required to correct the flight characteristics or operating
        characteristics, as the case may be, has been completed.

(2) Where a maintenance release in respect of an aircraft ceases to be in
force by virtue of an endorsement made under regulation 47, the maintenance
release shall again commence to be in force if there is entered on the
maintenance release or other document on which the endorsement was made a
further endorsement signed by an authorised person cancelling the
first-mentioned endorsement.

(3) An authorised person shall not make an endorsement under subregulation (2)
unless he or she is satisfied that there is no reason why the endorsement to
be cancelled should continue in force.

(4) A maintenance release that has ceased to be in force by virtue of an
endorsement made under regulation 47 shall not again commence to be in force
except by virtue of an endorsement made under this regulation.

(5) This regulation does not have effect in relation to a maintenance release
issued in respect of an aircraft if:

   (a)  the period during which the maintenance release is expressed to remain
        in force has expired; or

   (b)  a subsequent maintenance release has been issued in respect of the
        aircraft by virtue of paragraph 43 (7) (a).