AD 71-22-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | FH1100 Manufacturing Corporation | FH-1100 | Airworthiness Directives; Fairchild Hiller Model FH-1100 Helicopters |
Unsafe Condition
Failure of the FH1100 tail rotor bearing block, P/N 24-24010-3, due to cracks in the fuselage frame Station 163.5.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect fuselage frame Station 163.5 within the next 100 hours' time in service and every 100 hours thereafter per Service Bulletin FH1100-61-3. If cracks are found, alter the frame per the service bulletin's accomplishment instructions before further flight. If no cracks, accomplish alteration at next 1200-hour overhaul.
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Compliance Time
Within the next 100 hours' time in service, unless already accomplished, and every 100 hours after the last inspection. Incorporation of the alteration exempts from further compliance.
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Affected Aircraft
FH1100 Manufacturing Corporation Model FH-1100 helicopters, serial numbers 9 through 254.
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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