Fokker F28 Mark 0070 and Mark 0100 — Liftdumper Mechanical Control System Bolts
- Published
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected stakeholders should review Fokker Services Service Bulletin SBF100-27-093 to identify any received bolts with Part Number A16189-001. They should perform the recommended one-time inspection and replace any affected bolts installed on aircraft or held as spares. Discard or return defective bolts to Fokker Services as instructed. No mandatory compliance deadline is specified, but prompt action is advised.
Summary
EASA Safety Information Bulletin 2009-29 is an informational bulletin addressing a safety concern with certain shouldered bolts, Part Number A16189-001, used in the liftdumper mechanical control system of Fokker F28 Mark 0070 and Mark 0100 aircraft. The bulletin highlights that some bolts were wrongly manufactured with a thinner shoulder, which may affect the mechanical fit but not immediate safety. It provides guidance to operators and maintenance organizations on identifying and replacing these bolts.
What changed
This bulletin introduces awareness of a manufacturing defect in specific liftdumper mechanical control system bolts for Fokker F28 Mark 0070 and Mark 0100 aircraft. It recommends a one-time inspection and replacement of any affected bolts found installed or held as spares. Although it does not mandate an airworthiness directive, it endorses the Fokker Services Service Bulletin SBF100-27-093 for corrective actions.
Why it matters
The issue matters because incorrectly manufactured bolts can cause mechanical stress by clamping fork-end flanges improperly, potentially leading to fatigue failure over time. Operators, maintenance providers, and compliance teams need to ensure these bolts are identified and replaced to maintain long-term airworthiness and prevent potential maintenance complications. Awareness helps avoid installation of defective parts and ensures fleet safety and reliability.
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