EASA SIB CE-16-10
Air Tractor Inc. AT-402, -502, -602 and -802 Series Aeroplanes — Rudder Upper Hinge and Surrounding Structure
Summary
The FAA Special Airworthiness Information Bulletin SAIB: CE-16-10 provides information regarding the rudder upper hinge and surrounding structure on Air Tractor, Inc. Models AT-402/402A/402B, AT-502/502A/502B, AT-602, and AT-802/802A airplanes. This bulletin offers inspection procedures and maintenance recommendations to address potential issues with the rudder upper hinge. The bulletin is informational and does not mandate regulatory action.
What Changed
SAIB CE-16-10 introduces inspection procedures and on-condition maintenance actions for the rudder upper hinge and surrounding structure on specified Air Tractor airplane models. It follows a service letter issued by Air Tractor after a report of sheared rivets in the rudder upper hinge support bracket. The bulletin recommends initial inspections within 100 flight hours and repeat inspections every 300 hours or annually thereafter.
Why It Matters
This information is important for aviation professionals because it highlights a potential airworthiness concern that could affect the structural integrity of the rudder on certain Air Tractor airplanes. Operators and maintenance organizations need to monitor and maintain the rudder upper hinge to prevent possible structural failures. Although not mandatory, following these recommendations helps ensure continued safe operation and compliance with best maintenance practices.
What To Do
Operators of affected Air Tractor airplanes should perform an initial inspection of the rudder upper hinge and surrounding structure within 100 flight hours, followed by repeat inspections every 300 flight hours or annually. Any damaged parts found during inspections should be repaired or replaced according to the procedures in Snow Engineering Co. Service Letter #331. Inspection results should be reported to the Air Tractor Service Department as instructed.