AD 68-08-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | FH1100 Manufacturing Corporation | FH-1100 | Airworthiness Directives; Fairchild Hiller Model FH-1100 Helicopters |
Unsafe Condition
Coupling shafts with specified serial numbers (20, 21, 22, 23, 24, 25, 75, 77, 87, 90, 93, 98, 104, 106) may fail due to material defects or manufacturing anomalies.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove coupling shafts with specified serial numbers from service prior to further flight and replace with the same part number but different serial numbers.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
prior to further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Fairchild Hiller Model FH-1100 Helicopters with P/N 19E49-3A -3B coupling shaft serial numbers 20, 21, 22, 23, 24, 25, 75, 77, 87, 90, 93, 98, 104, or 106.
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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