AD 86-02-52 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Division | JT8D-1 | PRATT & WHITNEY Models JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-11 | PRATT & WHITNEY Models JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-15 | PRATT & WHITNEY Models JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-15A | PRATT & WHITNEY Models JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-17 | PRATT & WHITNEY Models JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-17A | PRATT & WHITNEY Models JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-17AR | PRATT & WHITNEY Models JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-17R | PRATT & WHITNEY Models JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-1A | PRATT & WHITNEY Models JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
| engine | Pratt & Whitney Division | JT8D-1B | PRATT & WHITNEY Models JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Engines |
Unsafe Condition
Fracture of the combustion chamber which could result in an uncontained engine failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove from service chambers with greater than 8 inches but ≤12 inches cumulative crack length within 100 hours or cycles. Remove from service chambers with >12 inches cumulative crack length immediately. Inspect 2-3 seam welds per PW SB 5639, with intervals based on crack length: 2,000h/1,500c for ≤3in, 1,500h/1,000c for 3-6in, 250h/200c for 6-8in. Reinspect per intervals adjusted by last crack length. Confirm crack length at installation; inspect within 100h/cycles if unknown.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 100 hours or 100 cycles time in service from the effective date, or prior to further flight as specified.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pratt & Whitney JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR engines overhauled by Aerothrust Corporation with specified serial numbers listed in the AD.
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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