How long can you fly over an inspection before needing a special flight permit?

The correct answer is based on the regulations regarding the operation of an aircraft that has not undergone the required inspection. According to the FAA regulations, if you have an expired airworthiness certificate due to not having completed the necessary inspections, a special flight permit is required to operate the aircraft. This permit allows for limited operations under specific conditions, typically for flight to a maintenance facility or another location where the necessary repairs or inspections can be completed.

In this particular context, the time frame of 10 hours aligns with the guidelines set for operating an aircraft that has lapsed in its maintenance schedule. While this allows for some operational flexibility, it ensures that the aircraft is not operated beyond the specified limit without the necessary compliance.

Understanding these regulations is crucial for ensuring safety and compliance in aviation operations, and knowing when a special flight permit is required helps pilots maintain legal authority to operate their aircraft safely.