Beechcraft C23 Sundowner — Other Documents

This Airworthiness Bulletin addresses the stabilator hinge fastener shearing issue affecting Beechcraft 19, 23, and 24 series aircraft. It aims to provide guidance to maintainers, operators, and pilots on detecting and replacing failed stabilator hinge fasteners to prevent in-flight separation of the stabilator, which could lead to loss of control. The bulletin highlights the potential for undetected corrosion on rivets, which may compromise their strength without visible signs of failure. It also discusses the history of structural issues related to the stabilator attachment and provides recommendations for inspections and fastener replacements.

• Inspect stabilator hinge fasteners regularly for signs of corrosion.
• Replace fasteners that have been in place for 15 years or more.
• Inspect the rear bulkhead structure for cracking after heavy landings or turbulence.
• Report any stabilator hinge rivet failures to the CASA SDR system.
• Follow guidelines in CASA AD/BEECH 23/44 and FAA AD 87-02-08 for inspections.