AD 82-15-01 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Schweizer Aircraft Corporation | 269A | Airworthiness Directive; HUGHES HELICOPTERS Model 269A, TH-55A, 269A-1, and 269C Helicopters |
| aircraft | Schweizer Aircraft Corporation | 269A-1 | Airworthiness Directive; HUGHES HELICOPTERS Model 269A, TH-55A, 269A-1, and 269C Helicopters |
| aircraft | Schweizer Aircraft Corporation | 269B | Airworthiness Directive; HUGHES HELICOPTERS Model 269A, TH-55A, 269A-1, and 269C Helicopters |
| aircraft | Schweizer Aircraft Corporation | 269C | Airworthiness Directive; HUGHES HELICOPTERS Model 269A, TH-55A, 269A-1, and 269C Helicopters |
Unsafe Condition
Failure of the main transmission due to possible fretting or cracking at the ring gear/carrier interface and attachment bolts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Disassemble the transmission and inspect the ring gear/carrier interface and attachment bolts for fretting or cracking, rework per Service Information Notice N-181 (paragraphs a. through j.), replace unairworthy parts, then reassemble per N-181 paragraphs k. through o. Alternative methods may be used if approved by the FAA.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 hours' additional time in service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Schweizer Aircraft Corporation Models 269A (all serial numbers), TH-55A (all serial numbers converted to civil use), 269A-1 (all serial numbers), 269B (all serial numbers), and 269C (serial numbers 0001 through 1074) with main transmission assemblies P/N 269A5175-7, -9, -11, -13, -15, and -17 (excluding those with 'W' on the transmission nameplate).
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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