Wings - Lower Forward Wing Fittings - Inspection
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AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators must perform a one-time inspection for washer P/N 90-380058-1 on both lower forward wing bolts within 200 flight hours or 12 months from January 11, 2021, whichever occurs later. If the washer is present, it must be removed, the wing fitting, bolt, and nut inspected for cracks, and any cracked fittings replaced. The washer must then be replaced with washer P/N 90-380019-1 to ensure safety and compliance.
Summary
Federal Register Volume 85, Number 235 (December 7, 2020) is a final rule airworthiness directive issued by the FAA addressing certain Textron Aviation Inc. airplanes (formerly Beechcraft Corporation) including Models F90, 65-90, B90, C90, H90 (T-44A), E90, 99 series, A99 series, B99, C99, 100 series, A100, and B100. The directive targets fatigue cracks in the lower forward wing fittings caused by the installation of a specific washer part number. It mandates inspection and corrective actions to ensure continued airworthiness and safety.
What changed
This new airworthiness directive introduces a one-time inspection requirement for the presence of washer part number 90-380058-1 on the left-hand and right-hand lower forward wing bolts. If this washer is found, it must be removed, the wing fitting, bolt, and nut inspected, and any cracked fittings replaced. The washer must then be replaced with part number 90-380019-1 to prevent premature torque indication and potential fatigue cracking.
Why it matters
This directive is critical for aviation professionals because it addresses a safety risk that could lead to wing separation and loss of airplane control. Operators and maintenance teams must identify and correct this issue to maintain structural integrity and comply with FAA regulations. Failure to comply could result in unsafe flight conditions and regulatory penalties.
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