What is the reference for using inoperative instruments and equipment during a flight?

The reference for using inoperative instruments and equipment during a flight is based on 14 CFR § 91.213. This regulation specifically outlines the conditions under which an aircraft can operate with inoperative instruments and equipment, provided the necessary procedures are followed.

Under this regulation, the pilot is required to assess whether the inoperative item is essential for safe operation or whether it can be deferred under specific circumstances. Additionally, it mandates that the aircraft must have an appropriate maintenance and operations record, and in many cases, the inoperative equipment must be removed or deactivated, and a placard may need to be displayed.

The focus of this regulation is to ensure safety while allowing for some flexibility in aircraft operation, acknowledging that certain equipment may not always be necessary for flight, depending on the specific circumstances and the aircraft's equipment list. Understanding this regulation is crucial for pilots to ensure compliance and maintain safety standards during flight operations.