Commonwealth Consolidated Regulations Commonwealth Consolidated Regulations(1) An aeroplane operator's exposition must include procedures to allow the aeroplane's flight path to meet the requirements mentioned in subregulation (2) if one engine becomes inoperative during take - off and the take - off is continued.
(2) The requirements are that the aeroplane's flight path must provide a safe route, clearing all obstacles along the flight path, for the aeroplane to land at either of the following aerodromes:
(a) the departure aerodrome for the flight;
(b) if the operational flight plan for the flight includes a take - off alternate aerodrome--the take - off alternate aerodrome.
(3) The operator of a 3 - engine or 4 - engine aeroplane must include, in the operator's exposition, procedures to follow if 2 engines become inoperative during the flight.
Subpart 121.J -- Weight and balance