Which is prohibited if the aircraft being used has not had a 100-hour inspection or annual inspection within the preceding 100 hours of time in service?

The prohibition on giving flight instruction for hire in an aircraft that has not undergone a 100-hour inspection or annual inspection within the preceding 100 hours of time in service is rooted in safety regulations. The Federal Aviation Administration (FAA) mandates that aircraft used for hire, which includes flight instruction for compensation, must be properly maintained and adhere to specific inspection requirements to ensure their airworthiness.

When providing flight instruction for hire, the instructor is responsible for the safety of the student and the aircraft, which underscores the importance of the aircraft being in a safe operational condition. Without the requisite inspections, there is an elevated risk of mechanical issues that could jeopardize flight safety.

While solo flight operations, maintenance checks, and passenger flights may allow for certain flexibility within maintenance requirements, giving flight instruction for hire involves a higher standard of safety assurance due to the nature of the commercial operation. Therefore, before engaging in instructional flights for compensation, an aircraft must meet its required maintenance checks to ensure compliance with safety regulations.