AD 70-17-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Schweizer Aircraft Corporation | 269A | Airworthiness Directives; Hughes Model 269 Series Helicopters |
| aircraft | Schweizer Aircraft Corporation | 269A-1 | Airworthiness Directives; Hughes Model 269 Series Helicopters |
| aircraft | Schweizer Aircraft Corporation | 269B | Airworthiness Directives; Hughes Model 269 Series Helicopters |
| aircraft | Schweizer Aircraft Corporation | 269C | Airworthiness Directives; Hughes Model 269 Series Helicopters |
Unsafe Condition
Cracks in lead-lag and flapping hinge bolts (P/N HS 1446-10-68) with BM vendor identification stamped on bolt heads could result in failure of the bolts, leading to loss of main rotor control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove all BM bolts and perform a magnaflux inspection for cracks. Replace cracked bolts with serviceable ones before further flight, and mark inspected, uncracked bolts with a white dot in the recessed head.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 hours time in service after the effective date of this AD
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Affected Aircraft
Schweizer Aircraft Corporation Model 269A, 269A-1, 269B, and 269C helicopters with lead-lag and flapping hinge bolts P/N HS 1446-10-68 (only lead-lag bolts on Model 269C) having BM vendor identification stamped on bolt heads.
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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