Outside jacking wind velocity is not to exceed what?

Outside jacking wind velocity is not to exceed what?

• A. 10 MPH
• B. 20 MPH
• C. 25 MPH
• D. 15 MPH

Answer: (D)

When you jack an aircraft, the weight is supported by jacks and the gear, so any external wind can push on the fuselage. That lateral force can cause the aircraft to shift, slide off the jacks, or tip the setup, especially if you’re working under the aircraft or near exposed equipment. To keep people safe and the equipment stable, a strict limit on outside wind velocity is specified for jacking operations. The limit used in standard procedures is 15 mph. This value provides a practical safety margin: low enough to keep wind-induced movement from overwhelming the restraints and jacks, yet not so restrictive that you’d cancel work in moderate conditions. If winds exceed this, the prudent choice is to postpone jacking or add additional restraints to maintain stability.

When you jack an aircraft, the weight is supported by jacks and the gear, so any external wind can push on the fuselage. That lateral force can cause the aircraft to shift, slide off the jacks, or tip the setup, especially if you’re working under the aircraft or near exposed equipment. To keep people safe and the equipment stable, a strict limit on outside wind velocity is specified for jacking operations. The limit used in standard procedures is 15 mph. This value provides a practical safety margin: low enough to keep wind-induced movement from overwhelming the restraints and jacks, yet not so restrictive that you’d cancel work in moderate conditions. If winds exceed this, the prudent choice is to postpone jacking or add additional restraints to maintain stability.