AD 74-21-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Schweizer Aircraft Corporation | 269A | Airworthiness Directives; Hughes Model 269A, 269A-1, 269B, 269C Helicopters |
| aircraft | Schweizer Aircraft Corporation | 269A-1 | Airworthiness Directives; Hughes Model 269A, 269A-1, 269B, 269C Helicopters |
| aircraft | Schweizer Aircraft Corporation | 269B | Airworthiness Directives; Hughes Model 269A, 269A-1, 269B, 269C Helicopters |
| aircraft | Schweizer Aircraft Corporation | 269C | Airworthiness Directives; Hughes Model 269A, 269A-1, 269B, 269C Helicopters |
Unsafe Condition
Cracks in canopy slat surfaces and insecure slat attachment hardware or canopy attachment areas could result in canopy slat failure.
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Required Actions
Conduct daily close visual checks or inspections for cracks and hardware security. Replace cracked or damaged slats with specified parts or approved alternatives. Modify canopy slats per Hughes Service Information Notice N-127 within 50 hours time in service after April 4, 1975.
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Compliance Time
Prior to the next 50 hours time in service after the effective date of this amendment (April 4, 1975), unless already accomplished.
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Affected Aircraft
Schweizer Aircraft Corporation models 269A, 269A-1, 269B, 269C helicopters with canopy slat P/N 269A2297 or 269A2297-7.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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