EASA SIB CE-11-26
M7 Aerospace (Fairchild, Swearingen) SA226/SA227 Aeroplanes - Wing Leading Edge Skins and Doublers Inspection / Repair
Summary
The FAA Special Airworthiness Information Bulletin SAIB: CE-11-26 provides guidance for registered owners and operators of M7 Aerospace LP SA226 and SA227 model aircraft regarding inspection and repair of wing leading edge skins and doublers at wing station 78. It addresses cracking concerns in part numbers 27-31000 (wing skin) and 27-35084 (doubler) and offers inspection and repair procedures without mandating compliance. This bulletin applies to aircraft under type certificate data sheets A5SW, A8SW, and A18SW.
What Changed
This bulletin introduces new inspection and repair procedures for cracks found in the wing leading edge skins and doublers of M7 Aerospace SA226 and SA227 aircraft. It specifies inspection intervals tied to the next 'A' Letter Check or Phase Inspection, not exceeding 800 hours time-in-service or 12 months from the bulletin issue date, with recurring inspections every 12 months or 1,000 hours thereafter. Repair procedures are detailed in the Structural Repair Manuals and must be performed if cracks are detected.
Why It Matters
This information is critical for aviation professionals to maintain the structural integrity of the wing leading edges on affected M7 Aerospace aircraft. Timely inspections and repairs help prevent potential structural failures, ensuring continued airworthiness and safety. Operators, maintenance organizations, and compliance teams must integrate these procedures into their maintenance programs to avoid operational disruptions and uphold regulatory standards.
What To Do
Operators should inspect the right and left wing leading edge skins (P/N 27-31000) and doublers (P/N 27-35084) at the next scheduled 'A' Letter Check or Phase Inspection, not exceeding 800 hours time-in-service or 12 months from March 30, 2011. Subsequent inspections should occur every 12 months or 1,000 hours time-in-service, whichever comes first. Any cracks found must be repaired according to the applicable Structural Repair Manual before further flight.
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