# SDR 2026FA0000551

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 2026
- Submitted: June 30, 2026
- Operation: General aviation
- Aircraft: [N68685](https://openairdocs.org/aircraft/N68685), registered now
- Make and model: Cessna 421C
- Registry model: [Cessna 421C](https://openairdocs.org/model/cessna-421c) (OpenAirDocs)
- Aircraft serial: 421C1102
- Aircraft time: 8,351 hours
- Engine: Cont GTSIO520N
- Engine time: 445 hours
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Gasket
- Part number: 51540562
- Condition: Degraded
- Location: A/C Compressor
- Part time: 445 hours
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000551

## Discrepancy

FAILED GASKET PN: 5154056-2 FOR THE AC COMPRESSOR, RESULTING IN A SEVERE ENGINE OIL LEAK, SPRAYING ENGINE OIL ON THE EXHAUST SYSTEM.

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