Commonwealth Consolidated Regulations Commonwealth Consolidated Regulations(1) A modification or repair to a limited category aircraft is a major modification or repair if the modification or repair has a significant effect on a characteristic affecting the aircraft's airworthiness, including any of the following:
(a) its weight or balance;
(b) its structural strength;
(c) its reliability;
(d) its performance;
(e) its operational characteristics.
(2) However, a modification or repair to a limited category aircraft is taken not to be a major modification or repair if advice has been given under regulation 132.175 that the modification or repair is not a major modification or repair.
(3) In this regulation:
"modification" includes a combination of modifications.
"repair" includes a combination of repairs.