AD Amdt-39-12452
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Eurocopter | France Model SA-365N1, AS-365N2, and SA-366G1 | Airworthiness Directives; Eurocopter France Model SA-365N1, AS-365N2, and SA-366G1 Helicopters |
Unsafe Condition
Bonding separation in tail rotor blades can lead to damage, loss of tail rotor control, and subsequent loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually check each tail rotor blade for cracks, blisters, or wrinkling before first flight daily. Conduct tapping test inspections at specified intervals to detect bonding separation exceeding allowable limits. Replace blades if separation exceeds criteria or cracks/blistering/wrinkling are found in specific zones.
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Compliance Time
Within 10 hours time-in-service and thereafter as specified (daily visual checks, tapping tests every 25-100 hours or cycles, clearance measurements every 100 hours or cycles).
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Affected Aircraft
Eurocopter France Model SA-365N1, AS-365N2, SA-366G1 helicopters with tail rotor blades part numbers 365A33-2131, 365A12-0010, or 365A12-0020 (all dash numbers).
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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