Which statement accurately links training requirements to a new or revised aircraft modification?

• A. Updated training and possibly a new type rating endorsement are required for modified aircraft.
• B. No training is needed for minor modifications.
• C. Training is required only for the pilot-in-command.
• D. A new knowledge test suffices without training.

Answer: (A)

When an aircraft modification is new or revised in a way that affects the aircraft’s type design or how it’s operated, training becomes required because pilots must learn about the changes, new systems, procedures, and performance. If the modification is significant enough to require a new type rating endorsement, updated training is required and the endorsement is added after completing that training. A knowledge test by itself does not satisfy the training requirement; it may be part of the process, but you still need actual training and, often, a checkride. Training isn’t limited only to the pilot in command; other crew who operate the modified aircraft may also need to be trained. The other statements misstate the relationship between modifications and training: some say no training is needed for modifications, others limit training to the PIC, and others claim a sole knowledge test suffices.