AD 97-26-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus Helicopters | SA-360C Dauphin | Airworthiness Directives; Eurocopter France Model SA-360C Helicopters |
Unsafe Condition
Fatigue cracking of the main gear box (MGB) bevel pinion, P/N 360A32-1021-20, leading to failure of the MGB and a subsequent forced landing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the MGB bevel pinion, P/N 360A32-1021-20, before further flight and at intervals not exceeding 1,000 hours time-in-service (TIS). The replacement is required for MGBs with 900 or more hours TIS since installation or last overhaul, and by 1,000 hours TIS for those with less than 900 hours TIS. Update the Airworthiness Limitations section with the 1,000-hour TIS retirement life.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight, and thereafter at intervals not to exceed 1,000 hours time-in-service (TIS).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Eurocopter France Model SA-360C helicopters with main gearbox (MGB), part number (P/N) 360A32-2000-all dash numbers, installed, certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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