(b)
An aircraft in a controlled environment is an aircraft (i) continuously managed during the previous 12 months by a unique continuing airworthiness management organisation approved in accordance with MCAR-M Subpart G, and (ii) which has been maintained for the previous 12 months by maintenance organisations approved in accordance with MCAR-M Subpart F, or MCAR-145. This includes maintenance tasks referred to in point MCAR-M.803(b) carried out and released to service in accordance with point MCAR-M.801(b)2 or point MCAR-M.801(b)3;

(c)
For all aircraft used in commercial air transport, and aircraft above 2 730 kg MTOM, except balloons, that are in a controlled environment, the organisation referred to in (b) managing the continuing airworthiness of the aircraft may, if appropriately approved, and subject to compliance with paragraph (k):

1.
issue an airworthiness review certificate in accordance with point MCAR-M.710, and;

2.
for the airworthiness review certificates it has issued, when the aircraft has remained within a controlled environment, extend twice the validity of the airworthiness review certificate for a period of one year each time;

(d)
For all aircraft used in commercial air transport and aircraft above 2 730 kg MTOM, except balloons, that (i) are not in a controlled environment, or (ii) which continuing airworthiness is managed by a continuing airworthiness management organisation that does not hold the privilege to carry out airworthiness reviews, the airworthiness review certificate shall be issued by the CAD upon satisfactory assessment based on a recommendation made by a continuing airworthiness management organisation appropriately approved in accordance with MCAR-M Subpart G sent together with the application from the owner or operator. This recommendation shall be based on an airworthiness review carried out in accordance with point MCAR-M.710;

(e)
For aircraft not used in commercial air transport of 2 730 kg MTOM and below, and balloons, any continuing airworthiness management organisation approved in accordance with MCAR-M Subpart G and appointed by the owner or operator may, if appropriately approved and subject to paragraph (k):

1. 
 issue the airworthiness review certificate in accordance with point MCAR-M.710, and;

2.
for airworthiness review certificates it has issued, when the aircraft has remained within a controlled environment under its management, extend twice the validity of the airworthiness review certificate for a period of one year each time;

(f)
By derogation from points MCAR-M.901(c)2 and MCAR-M.901(e)2, for aircraft that are in a controlled environment, the organisation referred to in (b) managing the continuing airworthiness of the aircraft, subject to compliance with paragraph (k), may extend twice for a period of one year each time the validity of an airworthiness review certificate that has been issued by CAD or by another continuing airworthiness management organisation approved in accordance with MCAR-M Subpart G;

(g)
By derogation from points MCAR-M.901(e) and MCAR-M.901(i)2, for ELA1 aircraft not used in commercial air transport and not affected by point MCAR-M.201(i), the airworthiness review certificate may also be issued by CAD upon satisfactory assessment, based on a recommendation made by certifying staff formally approved by CAD and complying with provisions of MCAR-66 as well as requirements laid down in point MCAR-M.707(a)2(a), sent together with the application from the owner or operator. This recommendation shall be based on an airworthiness review carried out in accordance with point MCAR-M.710 and shall not be issued for more than two consecutive years;

(h)
Whenever circumstances reveal the existence of a potential safety threat, CAD shall carry out the airworthiness review and issue the airworthiness review certificate itself;

(i)  
In addition to paragraph (h), CAD may also carry out the airworthiness review and issue the airworthiness review certificate itself in the following cases:
　
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