# SDR 2025FA0000574

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 26, 2025
- Submitted: August 26, 2025
- Operation: General aviation
- Aircraft: [N150SU](https://openairdocs.org/aircraft/N150SU), registered now
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft serial: 172S11565
- Aircraft time: 4,954 hours
- Engine: Lyc IO360L2A
- Engine time: 295 hours
- Propeller: Mcauly 1A170E
- System (JASC): [7997 · Engine Oil System Wiring](https://openairdocs.org/jasc/7997)
- Part: Elec Connector
- Part number: S2800277
- Condition: Intermittent
- Location: Zone 400
- Part time: 4,954 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2025FA0000574

## Discrepancy

ENGINE OIL PRESSURE FLUCTUATES. REMOVED AND REPLACED THE OIL PRESSURE TRANSDUCER CONNECTOR JN004 PN: S2800-277 REFERENCING CESSNA/TEXTRON MODEL 172 (SERIES 1996 AND ON) WIRING DIAGRAM MANUAL REV A1, 77-40-01, FIGURE 03: SHEET 02 “ENGINE AND AIRFRAME MONITOR”.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.