Before releasing parking brakes, what must be verified?

• A. Personnel are clear of NLG and MLG
• B. The engines are off
• C. The tug is connected
• D. The cargo ramp is closed

Answer: (A)

The main safety step is to ensure no personnel are in the vicinity of the aircraft’s landing gears. Releasing the parking brakes allows the airplane to move if a tug or forces are present, and the wheels can roll or the gear struts can shift. If someone is near the nose gear (NLG) or main gear (MLG), they could be struck by moving tires or gear or become entangled in the gear area. Clearing the NLG and MLG zones prevents these hazards and keeps everyone in the safe area before movement begins. The other checks—engines off, tug connected, and cargo ramp closed—are important safety items for towing, but they do not replace the need to have personnel clear of the landing gear before releasing brakes.