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Flight rulesQuestion 114 of 934

A small non-turbine airplane has an instrument that does not work. The flight does not require it. What must be done to the instrument?

  1. Tell ATC about the problem before takeoff
  2. Remove it, or deactivate and placard it
  3. Fly only in the daytime with no passengers
  4. Write a note in the pilot's logbook
Show answer

Correct answer: Remove it, or deactivate and placard it

The instrument must be removed, or deactivated and placarded. A properly rated pilot or mechanic must also decide it is not a hazard.

Source: 14 CFR Part 91, § 91.213 Inoperative instruments and equipment.

Practice flight rules

Questions last reviewed: 18 October 2026