Final answer:
The alternate takeoff aerodrome requirements for a 705 Operation involve having a designated alternate airport that meets specific criteria like weather minima and distance based on the aircraft's performance, ensuring safety in case of an emergency after takeoff.
Step-by-step explanation:
The question pertains to the alternate takeoff aerodrome requirements for an operation under rules 705 in aviation, which is part of the Canadian Aviation Regulations (CARs). These requirements are critical for flight planning and safety, ensuring that an aircraft has a predetermined alternate destination in case it cannot take off from or return to the original airport. According to these regulations, operators must designate an alternate aerodrome that is available and within range according to the aircraft's fuel capacity, weather conditions, and operational criteria. The prevalence of specific guidelines depends on the type of aircraft, length of the route, weather conditions, and other factors like airport facilities and services.
For a 705 operation, which typically refers to commercial air transport with large aircraft, the alternate aerodrome must meet certain criteria such as having the necessary approach and landing aids compatible with the aircraft's equipment. The alternate aerodrome also must have weather conditions above specific minima, and must be at a certain distance from the departure aerodrome, which is based on the one-engine inoperative cruise speed for twin-engine aircraft or performance criteria for aircraft with more than two engines. These requirements exist to maintain a high level of safety in case an aircraft needs to divert shortly after takeoff due to an emergency or significant change in weather conditions.