What should the angle of incidence be according to the manufacturer's specifications?

The angle of incidence refers to the angle between the wing's chord line and the aircraft's longitudinal axis. This angle is critical for achieving optimal aircraft performance; it affects lift, drag, and the overall stability of the airplane during flight.

According to the manufacturer's specifications, the angle of incidence must be set precisely as designated to ensure that the aircraft operates effectively within its designed performance envelope. Manufacturers perform extensive testing and calculations to determine the ideal incidence angle, which directly impacts the aircraft's ability to generate lift at various speeds and configurations.

Setting the angle of incidence incorrectly—whether greater or less than specified—can lead to performance issues, such as difficulties in achieving proper lift or increased drag, which can compromise safety and efficiency during flight. Therefore, adhering to the specified angle ensures the aircraft operates as intended under various flying conditions.