AD 2001-20-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Robinson | Helicopter Company Model R44 | Airworthiness Directives; Robinson Helicopter Company Model R44 Helicopters |
Unsafe Condition
Cracking of vertical-to-horizontal stabilizer attach channels (P/N D283-1 and -2 with nutplates P/N NAS697A4) can cause separation of the stabilizers and subsequent loss of directional control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Before accumulating 2200 hours time-in-service, remove the vertical stabilizer to inspect the nutplates on channels P/N D283-1 and -2. Replace channels with airworthy P/N D296-1 or -2 if nutplates are P/N NAS697A4. Establish a retirement life of 2200 hours TIS for the horizontal stabilizer assembly.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before accumulating 2200 hours time-in-service
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Affected Aircraft
Robinson Helicopter Company Model R44 helicopters with horizontal stabilizer assembly P/N C044-1, serial numbers 0009-0224 (excluding specific serial numbers listed), and channels P/N D283-1/-2 with nutplates P/N NAS697A4.
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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