Which Canadian maintenance entity is authorized to approve major repairs and alterations on U.S.-registered aircraft?

The correct choice is that an Approved Maintenance Organization (AMO) is authorized to approve major repairs and alterations on U.S.-registered aircraft. In Canada, maintenance organizations that hold AMO certification are recognized for their ability to perform major maintenance tasks, including repairs and alterations on various types of aircraft, including those registered in the U.S.

This authorization is significant because it establishes a framework for safety and compliance with international aviation standards. An AMO must adhere to stringent regulatory requirements set by Transport Canada, which ensures that they have the necessary facilities, personnel, and procedures in place to effectively carry out maintenance on aircraft.

While an aviation maintenance engineer can conduct maintenance and repairs, their individual capacity does not equate to the organizational authority granted to an AMO. Therefore, while an engineer plays a vital role in the maintenance process, it is the AMO that holds the official approval needed for major work on U.S.-registered aircraft.