EASA AD 2022-0154
SUPERSEDED BY EASA AD 2022-0205
Summary
EASA Airworthiness Directive 2022-0154 is an airworthiness directive issued for Leonardo S.p.A. AB139 and AW139 helicopters. It addresses the inspection and potential replacement of tail rotor damper bracket assemblies with part number 3G6420A06131 due to detected cracks caused by stress corrosion. The directive mandates repetitive inspections and corrective actions to ensure continued safe operation of affected helicopters.
What Changed
This directive introduces mandatory repetitive detailed visual inspections of the tail rotor damper bracket assembly for cracks and corrosion. It requires removal of corrosion or replacement of the affected part with a serviceable part if cracks or persistent corrosion are found. Additionally, it prohibits installation of affected parts on any helicopter from the effective date.
Why It Matters
This directive is critical for aviation professionals as it addresses a potential unsafe condition that could lead to tail rotor damper failure and loss of helicopter control. Operators and maintenance organizations must comply to prevent in-flight failures and ensure regulatory compliance. The inspections and corrective actions help maintain aircraft airworthiness and safety.
What To Do
Operators of AB139 and AW139 helicopters must perform detailed visual inspections of the tail rotor damper bracket within 50 flight hours or 2 months from 15 August 2022, whichever occurs first, and repeat inspections at intervals not exceeding 50 flight hours or 6 months. Corrosion must be removed before next flight, and cracked parts must be replaced before next flight. Installation of affected parts is prohibited from the effective date.
AI-generated summary from official EASA source document. Always verify against the original.