Some Exhibit Cracks In Fittings Attaching Horizontal Stab To Fuselage
The FAA has issued a Special Airworthiness Information Bulletin (SAIB) addressing cracking discovered in certain aluminum fittings that attach the horizontal stabilizer to the fuselage of Robert E. Rust, Jr. Models DeHavilland DH.C1 Chipmunk 21; DH.C1 Chipmunk 22A; DH.C1 Chipmunk 22; serial numbers C1-001 through C1-1014 airplanes.