Aircraft systems and instrumentsQuestion 662 of 934

What should a pilot do before the fuel cap is removed during refueling, to guard against static electricity?

  1. Attach a ground wire to the aircraft
  2. Turn on the master switch
  3. Open the fuel vents
  4. Set the parking brake and shut off the avionics
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Correct answer: Attach a ground wire to the aircraft

The refueling nozzle should also be bonded to the aircraft before refueling begins, and stay bonded throughout.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 7: Aircraft Systems — Fuel Systems — Refueling Procedures, page 189

Practice aircraft systems and instruments

Questions last reviewed: 18 October 2026