AD 75-09-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Continental Motors | GTSIO-520-C | TELEDYNE CONTINENTAL MOTORS Model TSIO-470-B, TSIO-470-C, TSIO-470-D, TSIO-520-B, TSIO-520-D, TSIO-520-E, GTSIO-520-C, GTSIO-520-D, GTSIO-520-H, GTSIO-520-F, TSIO-520-J, and TSIO-520-K Engines |
| engine | Continental Motors | GTSIO-520-D | TELEDYNE CONTINENTAL MOTORS Model TSIO-470-B, TSIO-470-C, TSIO-470-D, TSIO-520-B, TSIO-520-D, TSIO-520-E, GTSIO-520-C, GTSIO-520-D, GTSIO-520-H, GTSIO-520-F, TSIO-520-J, and TSIO-520-K Engines |
| engine | Continental Motors | GTSIO-520-F | TELEDYNE CONTINENTAL MOTORS Model TSIO-470-B, TSIO-470-C, TSIO-470-D, TSIO-520-B, TSIO-520-D, TSIO-520-E, GTSIO-520-C, GTSIO-520-D, GTSIO-520-H, GTSIO-520-F, TSIO-520-J, and TSIO-520-K Engines |
| engine | Continental Motors | GTSIO-520-H | TELEDYNE CONTINENTAL MOTORS Model TSIO-470-B, TSIO-470-C, TSIO-470-D, TSIO-520-B, TSIO-520-D, TSIO-520-E, GTSIO-520-C, GTSIO-520-D, GTSIO-520-H, GTSIO-520-F, TSIO-520-J, and TSIO-520-K Engines |
| engine | Continental Motors | TSIO-470-B | TELEDYNE CONTINENTAL MOTORS Model TSIO-470-B, TSIO-470-C, TSIO-470-D, TSIO-520-B, TSIO-520-D, TSIO-520-E, GTSIO-520-C, GTSIO-520-D, GTSIO-520-H, GTSIO-520-F, TSIO-520-J, and TSIO-520-K Engines |
| engine | Continental Motors | TSIO-470-C | TELEDYNE CONTINENTAL MOTORS Model TSIO-470-B, TSIO-470-C, TSIO-470-D, TSIO-520-B, TSIO-520-D, TSIO-520-E, GTSIO-520-C, GTSIO-520-D, GTSIO-520-H, GTSIO-520-F, TSIO-520-J, and TSIO-520-K Engines |
| engine | Continental Motors | TSIO-470-D | TELEDYNE CONTINENTAL MOTORS Model TSIO-470-B, TSIO-470-C, TSIO-470-D, TSIO-520-B, TSIO-520-D, TSIO-520-E, GTSIO-520-C, GTSIO-520-D, GTSIO-520-H, GTSIO-520-F, TSIO-520-J, and TSIO-520-K Engines |
| engine | Continental Motors | TSIO-520-B | TELEDYNE CONTINENTAL MOTORS Model TSIO-470-B, TSIO-470-C, TSIO-470-D, TSIO-520-B, TSIO-520-D, TSIO-520-E, GTSIO-520-C, GTSIO-520-D, GTSIO-520-H, GTSIO-520-F, TSIO-520-J, and TSIO-520-K Engines |
| engine | Continental Motors | TSIO-520-D | TELEDYNE CONTINENTAL MOTORS Model TSIO-470-B, TSIO-470-C, TSIO-470-D, TSIO-520-B, TSIO-520-D, TSIO-520-E, GTSIO-520-C, GTSIO-520-D, GTSIO-520-H, GTSIO-520-F, TSIO-520-J, and TSIO-520-K Engines |
| engine | Continental Motors | TSIO-520-E | TELEDYNE CONTINENTAL MOTORS Model TSIO-470-B, TSIO-470-C, TSIO-470-D, TSIO-520-B, TSIO-520-D, TSIO-520-E, GTSIO-520-C, GTSIO-520-D, GTSIO-520-H, GTSIO-520-F, TSIO-520-J, and TSIO-520-K Engines |
Unsafe Condition
Cracked turbocharger oil inlet adapters may result in oil leakage and failure of the turbocharger system.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the turbocharger oil inlet adapter for cracks and oil seepage. Replace with steel adapter TCM P/N 640793 or Cessna P/N 5655204-2 if cracks or leakage are found. Inspect at intervals not exceeding 25 hours' time in service until replacement is completed. Replace aluminum adapters with steel fittings within one year from the AD's effective date.
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Compliance Time
within the next 25 hours' time in service after the effective date of this AD
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Affected Aircraft
Teledyne Continental Motors engines models TSIO-470-B (S/N ≤100080), TSIO-470-C (S/N ≤108534), TSIO-470-D (S/N ≤138544), TSIO-520-B (S/N ≤500018 or ≤176191), TSIO-520-D (S/N ≤505001 or ≤180029), TSIO-520-E (S/N ≤502125 or ≤182395), GTSIO-520-C (S/N ≤602001 or ≤155370), GTSIO-520-D (S/N ≤601005 or ≤219161), GTSIO-520-H (S/N ≤600137 or ≤218046), GTSIO-520-F (S/N ≤603028 or ≤224203), TSIO-520-J (Cessna 414 S/N ≤00489), TSIO-520-K (Cessna 340 S/N ≤00318), excluding specific 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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