Superseded by EASA AD 2024-0233
- Published
- Effective
- Deadline
- Replaces
- 2018-0142R1
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Group 1 helicopters must remove removable dual hoist parts or the de-icing system before the next flight after 6 July 2018, or apply approved flight manual amendments as an alternative. Group 2 helicopters must measure vibration levels within 110 flight hours after 24 May 2024 and, based on findings, remove either the dual hoist system or de-icing harnesses before further flight. Re-installation of these systems is allowed only under specified conditions, with mandatory vibration checks after configuration changes.
Summary
EASA Airworthiness Directive 2024-0100 is issued for Airbus Helicopters AS 332 C, C1, L, and L1 models equipped with dual hoist installation and de-icing systems. It addresses a vibration issue around 12 Hz frequency observed after retrofit of the de-icing system, which could lead to structural failure or loss of control. The directive mandates removal or operational limitations related to the dual hoist and de-icing systems to mitigate this unsafe condition.
What changed
This directive supersedes EASA AD 2018-0142R1 and extends applicability to post-modification 0722907 helicopters. It introduces requirements for in-flight vibration measurement and interpretation for these helicopters, and depending on results, mandates removal of either the dual hoist system or the de-icing system. It also allows re-installation of one system only if the other is removed, with specific procedures for compliance.
Why it matters
This AD is critical for operators and maintenance organizations to prevent potentially dangerous vibrations that could cause mechanical failure or loss of helicopter control. Compliance ensures continued airworthiness and safety of affected AS 332 helicopters, avoiding operational disruptions and regulatory penalties. It also provides clear guidance on alternative compliance methods and post-modification configurations.
More for Airbus Helicopters SA 330
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- EASA AD 2026-0148Electrical Power – Direct Current Electrical Master Box – InspectionJul 28, 2026
- EASA AD 2023-0148R1Main Rotor Drive – Main Gearbox – Replacement; Placards and Markings – ENG1 Training Idle Switch – Installation / Operational RestrictionJul 24, 2026
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