Forward Wing Spar to Fuselage Attachment Fittings - Visual Inspection
- Published
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Owners and operators of the affected Piper Aircraft models should ensure that the forward wing attach fittings are visually inspected during annual or 100-hour inspections following the applicable Piper Aircraft Maintenance Manual. Installing inspection panels or borescope holes may facilitate these inspections, and operators should consult Piper Aircraft for acceptable methods. Special attention should be given to aircraft operating in coastal or corrosive environments, and signs such as powdery rivets should prompt further investigation.
Summary
The Special Airworthiness Information Bulletin SAIB: AIR-21-10 is an FAA advisory concerning potential corrosion in the forward wing spar to fuselage attachment fittings on certain Piper Aircraft, Inc. models including PA-28, PA-32, PA-34, and PA-44 series airplanes. It highlights the risk of galvanic corrosion between steel fittings and aluminum spars in areas that may be difficult to inspect visually. This bulletin provides information to owners and operators but does not mandate regulatory action.
What changed
This bulletin introduces awareness of corrosion issues specifically affecting the forward wing spar to fuselage attach fittings, which were not previously included in Piper Aircraft service bulletins focused on aft attach fittings. It brings attention to the need for inspection of these forward fittings due to observed corrosion cases, especially in aircraft operating in coastal or corrosive environments.
Why it matters
This information is important for aviation professionals because corrosion in critical wing attachment points can compromise structural integrity if left unchecked. Operators and maintenance personnel need to be vigilant during inspections to detect early signs of corrosion, which may be hidden or difficult to access. Addressing this issue proactively helps maintain aircraft safety and airworthiness without requiring mandatory regulatory directives.
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