Contents
What is the first step in aircraft structure repair?
The first step in the repair process is the removal of existing fasteners, some of which may have already been removed during the damage evaluation phase. Sometimes, the paint layer may have to be removed in order to see the rivets clearly.
What are the types of solid shank rivet?
There are three types of rivets: Solid Shank, Blind and Pin (Hi-Shear). Solid shank rivets are most common and consist of a manufactured head (mushroom head and countersunk), a solid shank and a driven head.
How is aircraft skin damage classified?
Stressed skin carries a large portion of the load imposed upon an aircraft structure. Various specific skin areas are classified as highly critical, semicritical, or noncritical. Minor damage to the outside skin of the aircraft can be repaired by applying a patch to the inside of the damaged sheet.
How many lap joints are there in a patch repair and what is their purpose?
A patch typically consists of two lap joints, one to pick up the load and another to return the load. When might a plug and reinforcement plate repair be used? When needed to maintain the surface plane.
How do you repair a fuselage skin panel?
The first step for repairing damage to a fuselage skin panel is to cut out the damaged area 1. Cracks tend to propagate, so an area much larger than the damage will be removed to ensure that all damaged material is removed. The stiffeners that are behind the fasteners will need to be inspected for damage as well.
What are the repair procedures for a plane?
(2)Avoid drilling oversized holes or otherwise decreasing the effective tensile areas of wing-spar capstrips, wing, fuselage, fin- longitudinal stringers, or highly-stressed ten- sile members. Make all repairs, or reinforce- ments, to such members in accordance with factory recommendations or with the specific approval of an FAA representative.
What are the parts of a fixed wing aircraft?
Par 4-50 Page 4-11 SECTION 4. METAL REPAIR PROCEDURES 4-50. GENERAL. The airframe of a fixed- wing aircraft is generally considered to consist of five principal units; the fuselage, wings, stabilizers, flight control surfaces, and landing gear.
Why is the fuselage of an airplane hollow?
The fuselage is hollow to reduce weight . As with most other parts of the airplane, the shape of the fuselage is normally determined by the mission of the aircraft. A supersonic fighter plane has a very slender, streamlined fuselage to reduce the drag associated with high speed flight.