What is the maximum deviation permitted in a compensated magnetic direction indicator during level flight on an aircraft under Federal Aviation Regulations?

The correct answer indicates that a maximum deviation of 10 degrees is permitted for a compensated magnetic direction indicator during level flight in accordance with Federal Aviation Regulations. This standard ensures that pilots can rely on their instruments for accurate navigation and directional awareness.

The rationale behind this specific limit is rooted in safety and operational reliability. A deviation of more than 10 degrees could lead to significant navigational errors, especially in situations where precision is crucial, such as during instrument flight or when flying in congested airspace.

Regulatory authorities set these standards based on extensive research and operational experience to minimize the risk of navigational errors that could arise from compass inaccuracies. Maintaining this level of precision helps ensure that pilots maintain course and situational awareness, which is essential for flight safety.

Understanding this maximum deviation is critical for pilots, as it impacts their ability to interpret directional instruments correctly, affecting their overall situational awareness and decision-making in flight.