EASA SIB CE-17-22: Air Tractor Inc. AT-802 and AT-802A Aeroplanes - Aileron Control System

What to do

Owners and operators of affected Air Tractor AT-802 and AT-802A airplanes should inspect the aileron bell crank attach plates using the procedures outlined in Snow Engineering Co. Service Letter #366. If any suspect welds are found, they should contact the Air Tractor Customer Service Department promptly. Compliance with these recommendations is voluntary, and no specific deadlines are mandated in the bulletin.

Summary

The Special Airworthiness Information Bulletin SAIB: CE-17-22 is an informational document issued by the FAA concerning Air Tractor, Inc. Models AT-802 and AT-802A airplanes, specifically serial numbers -0550 through -0600 and -4026 through -4029. It addresses an airworthiness concern related to the aileron bell crank attach plates and provides inspection procedures and maintenance recommendations. This bulletin does not mandate regulatory action but serves to inform owners and operators about potential issues with the aileron control system.

What changed

SAIB CE-17-22 introduces inspection procedures for the aileron bell crank attach plates on affected Air Tractor AT-802 and AT-802A airplanes following reports of in-flight failures due to incomplete welds. It references Snow Engineering Co. Service Letter #366, which provides detailed inspection instructions and guidance for reporting suspect welds. This bulletin does not impose mandatory compliance but recommends proactive inspection and maintenance.

Why it matters

This bulletin is important for aviation professionals because it highlights a potential safety concern that could lead to loss of aileron control if weld failures occur. Operators and maintenance teams need to be aware of this issue to prevent in-flight control problems and ensure continued airworthiness. Early detection and corrective action can mitigate risks without the need for formal airworthiness directives.