EASA SIB CE-16-11
Cessna (Reims) F177RG, Textron (Cessna) 177 series and 177RG Aeroplanes — Wing Lower Main Spar Cap Inspection
Summary
The Special Airworthiness Information Bulletin FAA SAIB: CE-16-11 provides information about the potential for cracks and corrosion in the wing lower main spar caps near the wing root on Textron Aviation Inc. (Cessna) Models 177, 177A, 177B, 177RG, and F177RG airplanes. This bulletin is informational only and does not mandate regulatory action. It alerts owners, operators, and maintenance personnel to inspect these specific Cessna 177 series aircraft for structural integrity concerns.
What Changed
This bulletin introduces a recommendation for visual and eddy current inspections of the wing lower spar caps on the affected Cessna 177 series airplanes due to discovered cracks and corrosion. It references Cessna Service Letter SEL-57-03 for inspection procedures and intervals but does not impose mandatory compliance or an airworthiness directive. The bulletin also clarifies that no unsafe condition currently warrants an AD for these models.
Why It Matters
This information is important for aviation professionals because cracks and corrosion in wing spar caps can compromise structural integrity and safety. Operators and maintenance teams need to be aware of potential issues, especially for aircraft used in low altitude operations or with wing modifications. Early detection through recommended inspections can prevent more serious damage and costly repairs.
What To Do
Operators and maintenance personnel should perform visual inspections for cracks and corrosion on the wing lower spar caps following the procedures and intervals outlined in Cessna Service Letter SEL-57-03. Special attention should be given to aircraft used in extended low altitude operations or those with gross weight increases or wing modifications. If corrosion is found, repair guidance from Textron Aviation should be followed, and if cracks are detected, the wing spar should be replaced.