Landing Gear — Main Landing Gear / Piston — Inspection / Replacement / Modification
- Published
- Effective
- Deadline
- Replaces
- 2011-0159
- Replaces
- 2017-0163
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must visually inspect affected MLG pistons within 2 months after 9 September 2011 or within 12 months after the last inspection, then at intervals not exceeding 12 months. Cracked parts must be replaced before the next flight. Specific affected pistons must be replaced within 6 months of 20 September 2019, and all affected MLG units must be modified or replaced within 120 months or at the next scheduled overhaul. Installation of prohibited pistons is forbidden from the effective date.
Summary
EASA Airworthiness Directive 2019-0224 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Fokker F28 Mark 0070 and Mark 0100 aeroplanes. It addresses inspection, replacement, and modification requirements for main landing gear (MLG) pistons, specifically parts with P/N 41141-3, 41141-5, and 41141-7, to prevent cracking and potential landing gear failure. The directive mandates actions to ensure the continued airworthiness of affected landing gear components.
What changed
EASA AD 2019-0224 supersedes previous directives 2011-0159 and 2017-0163, consolidating and updating requirements for inspection and replacement of affected MLG pistons. It introduces mandatory replacement or modification of certain MLG pistons with serviceable parts, prohibits installation of specific affected pistons, and requires repetitive inspections until terminating actions are completed. The directive also incorporates new Goodrich service bulletin instructions for modification and heat treatment verification.
Why it matters
This directive is critical for aviation professionals because it addresses a safety risk involving cracks in main landing gear pistons that could lead to gear failure during landing rollout. Operators and maintenance organizations must comply to prevent potential damage to aircraft and injury to occupants. Compliance ensures continued airworthiness and regulatory conformity, avoiding operational disruptions and safety incidents.
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