Final answer:
The maximum permissible indicated bearing error for a VOR equipment check under 14 CFR 91.171 is ±4 degrees. It is critical to maintain this accuracy for the safe operation of IFR flights.
Step-by-step explanation:
The question pertains to a regulation under the 14 CFR 91.171, which specifies the requirements for VOR (VHF Omnidirectional Range) equipment checks for IFR (Instrument Flight Rules) flight. The regulation states that the maximum permissible indicated bearing error for a VOR equipment check is ±4 degrees.
This means that during a VOR check, the indicated bearing to a station must be within four degrees of the correct bearing, both before departure on IFR flights and as part of the regular maintenance checks of the navigation system. It is essential to ensure the reliability and accuracy of the navigation equipment prior to undertaking an IFR flight.
The subject of this question is Aviation. The question is related to IFR flight and specifically the equipment check for VOR (VHF Omni Range) navigation systems.
The maximum permissible indicated bearing error is defined in 14 CFR (Code of Federal Regulations) 91.171, which is a regulation that governs the operation of aircraft in the United States.