Final answer:
The AFM supplements are indeed required to be onboard the airplane according to aviation regulations to ensure that all operational information is up-to-date and accessible for the safe operation of the aircraft.
Step-by-step explanation:
The question is asking whether the Airplane Flight Manual (AFM) supplements are required to be onboard the airplane. The answer is True. Regulations such as those from the Federal Aviation Administration (FAA) stipulate that the AFM, including any supplements, must be on board the aircraft during operation. These supplements are additional pages to the AFM that contain specifics about the operation of the aircraft under particular conditions or with certain equipment installed. As part of the required operational documentation, the AFM and its supplements provide critical information for the safe operation of the aircraft, and pilots are expected to be familiar with the content and adhere to the procedures outlined within.
Regulations and guidelines for aviation safety emphasize the importance of having all necessary documentation, including the AFM and its supplements, accessible and up-to-date to ensure the aircraft is operated as intended by the manufacturers and within the safe operating limits prescribed. Any modifications to the aircraft that require an AFM supplement must be acknowledged and included in the onboard documentation.