Engine – Vibration Levels – Measurement
Superseded. Comply with 2025-0149, which replaces this document.
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AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must measure engine vibration levels within 25 flight hours or 30 days from 7 June 2022, whichever occurs first, and continue at intervals specified in the manufacturer's Alert Service Bulletin ASB-37-21-330. If vibration levels exceed allowable limits, corrective actions must be taken before the next flight. Additionally, any engine replacement or affected part reinstallation requires vibration measurement before flight.
Summary
EASA Airworthiness Directive 2022-0092 is an airworthiness directive issued by the European Union Aviation Safety Agency concerning PZL W-3A and W-3AS model helicopters equipped with main gearboxes part numbers 64.21.3000 and 64.21.4000. The directive mandates repetitive engine vibration level measurements to detect potential unsafe conditions related to increased pinion gear play and bearing damage that could lead to oil leaks and fire hazards. This AD applies to all manufacturer serial numbers of the affected helicopter models.
What changed
EASA Airworthiness Directive 2022-0092 introduces mandatory repetitive engine vibration level measurements for both engines of the affected helicopters. It requires corrective actions if vibration levels exceed serviceability criteria and restricts operation until compliance. This AD is an interim measure pending further regulatory action and does not supersede any previous directives.
Why it matters
This directive is critical for aviation professionals as it addresses a safety risk involving potential gearbox failure and fire hazards due to abnormal engine vibrations. Operators and maintenance organizations must monitor engine vibration levels closely to prevent catastrophic failures and ensure continued airworthiness. Compliance helps avoid operational disruptions and enhances flight safety for PZL W-3A and W-3AS helicopter fleets.
More for Wsk Pzl-Swidnik PZL W-3A
All 19- EASA AD 2025-0235Engine — Vibration Levels — Measurements / InspectionsOct 23, 2025
- EASA AD 2025-0149Engine – Vibration Levels – Measurement / InspectionsJul 14, 2025
- EASA AD 2025-0097Equipment / Furnishings — Hoist Support / Inspection / Replacement — Removal from ServiceApr 28, 2025
- EASA AD 2024-0166Rotors — Main Rotor Blade Attachment Bolts — InspectionAug 21, 2024
- EASA AD 2022-0239Equipment / Furnishings — Hoist Carrier Assembly Bracket / Bolts — Inspection / Replacement
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New ADs and bulletins for Wsk Pzl-Swidnik PZL W-3A, PZL W-3A and PZL W-3AS, summarized like this page, every Monday.