AD 88-17-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Schweizer Aircraft Corporation | 269A | Airworthiness Directives; SCHWEIZER AIRCRAFT CORPORATION (MCDONNELL DOUGLAS HELICOPTER COMPANY, HUGHES HELICOPTERS, INC). Models 269A, TH-55A, 269A-1, 269B, and 269C Helicopter |
| aircraft | Schweizer Aircraft Corporation | 269A-1 | Airworthiness Directives; SCHWEIZER AIRCRAFT CORPORATION (MCDONNELL DOUGLAS HELICOPTER COMPANY, HUGHES HELICOPTERS, INC). Models 269A, TH-55A, 269A-1, 269B, and 269C Helicopter |
| aircraft | Schweizer Aircraft Corporation | 269B | Airworthiness Directives; SCHWEIZER AIRCRAFT CORPORATION (MCDONNELL DOUGLAS HELICOPTER COMPANY, HUGHES HELICOPTERS, INC). Models 269A, TH-55A, 269A-1, 269B, and 269C Helicopter |
| aircraft | Schweizer Aircraft Corporation | 269C | Airworthiness Directives; SCHWEIZER AIRCRAFT CORPORATION (MCDONNELL DOUGLAS HELICOPTER COMPANY, HUGHES HELICOPTERS, INC). Models 269A, TH-55A, 269A-1, 269B, and 269C Helicopter |
Unsafe Condition
Cracks and surface defects in the aft cluster fittings (P/N 269A2234-3 and 269A2235-3) could result in loss of the tail boom support strut and tail boom, leading to loss of the helicopter.
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Required Actions
Inspect aft cluster fittings for cracks and surface defects using specified procedures; install 'NO STEP' placards; replace cracked or non-compliant fittings before further flight; repeat inspections at intervals not exceeding 100 hours' time in service until compliance is achieved.
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Compliance Time
Within the next 25 hours' time in service after the effective date of this AD, and repeat inspections at intervals not to exceed 100 hours' time in service from the previous inspections.
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Affected Aircraft
Schweizer Aircraft Corporation Models 269A, TH-55A (all S/N's operated in civil use), 269A-1, 269B, and 269C (S/N's 0004 through 1289) helicopters.
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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