Where the jacks should be placed in aircraft?
The jacking points are usually placed equally around the aircraft’s center of gravity so the aircraft will be balanced when lifted on the jacks Three jacking points are usually used, one on each wing and one on the fuselage near either the tail or the nose of the aircraft.
How do you use jacking points on a plane?
Never place hands on top of the jack near the hand wheel safety nuts when lowering an aircraft jack. Pinch points exist in all airplane jacks between the top of the jack and the threads on the ram. Always lower the hand wheel safety nut(s) after the aircraft jack is fully under the load.
Why is it called a 747 hump?
Boeing decided to raise the cockpit above the nose cone, and — in order to maximize the planes aerodynamic efficiency — the hump was born. Later versions of the 747 would extend the hump further back on the plane, creating more room for premium cabin seats in the upper deck.
What preparations are made before an aircraft is jacked?
As an added safety measure, jacks should be inspected before use to determine the specific lifting capacity, proper functioning of safety locks, condition of pins, and general serviceability. Before raising an aircraft on jacks, all workstands and other equipment should be removed from under and near the aircraft.
What is an axle jack?
Axle Jacks Axle aircraft jacks are used for aircraft maintenance involving tire repair and replacement, brake service repair and other maintenance procedures when lifting the nose and/or main landing gear is necessary. Axle jacks are placed directly on or under aircraft landing gear.
What are the process involve in jacking?
Jacking involves the use of hydraulic pistons, which apply a uniform or gradual force to the pipe. Jacking essentially pushes the pipe through the soil on its intended path. Ramming, on the other hand, involves the use of a pneumatic hammer (also known as a ramming tool) to drive the pipe through the ground.
What is Levelling of aircraft?
The way in which aircraft may be checked on the ground for level flight as specified by the aircraft manufacturer. The aircraft may be leveled by means of leveling lugs, spirit or bubble levels, or a plumb bob.
Why it is important to weight the aircraft inside the hangar?
The aircraft should be weighed inside a hangar where wind cannot blow over the surface and cause fluctuating or false scale readings. The aircraft should be clean inside and out, with special attention paid to the bilge area to ensure that no water or debris is trapped there.
What is the tie down procedure for seaplanes?
Tie down the aircraft securely to anchors. Seaplanes tied down on land have been saved from high-wind damage by filling the floats with water in addition to tying the aircraft down in the usual manner. During heavy weather, if possible, remove the seaplane from the water and tie down in the same manner as a land plane.