What is required for towing aircraft according to CAR 602.22?

The requirement for towing aircraft as outlined in CAR 602.22 specifically states that a tow hook and a release-control mechanism are necessary. This is crucial for ensuring the safety and efficiency of the towing operation. The tow hook provides a secure attachment point between the towing vehicle and the aircraft, while the release-control mechanism allows for safe detachment of the aircraft from the towing vehicle when needed. These elements are essential to facilitate controlled movements and to avoid accidents during the towing process, ensuring that the aircraft can be maneuvered safely on the ground.

The other options listed do not pertain to the requirements set for towing aircraft. Emergency flares, while useful in other aviation scenarios, are not directly involved in the towing operation. The presence of a second pilot is typically not mandated for towing, as the primary focus is on the towing mechanism. Additionally, altitude restrictions over populated areas concern flight operations rather than ground towing requirements.