# SDR 2006FA0001055

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 25, 2006
- Submitted: November 7, 2006
- Operation: General aviation
- Aircraft: [N24352](https://openairdocs.org/aircraft/N24352), registered now
- Make and model: Cessna 172R
- Registry model: [Cessna 172R](https://openairdocs.org/model/cessna-172r) (OpenAirDocs)
- Aircraft serial: 17280835
- System (JASC): [8550 · Reciprocating Engine Oil System](https://openairdocs.org/jasc/8550)
- Part: Pressure Switch
- Part number: 83278
- Condition: Leaking
- Location: Engine Oil
- Part time: 2,618 hours
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2006FA0001055

## Discrepancy

AC WAS MAKING AN APPROACH AND HAD OIL SPLASH ON THE WINDSHIELD.  PILOT MADE A FULL STOP AND TAXIED BACK TO RAMP.  OIL PRESSURE AND TEMPERATURE STAYED IN THE GREEN.  UPON INVESTIGATION, FOUND THE CAUSE OF THE OIL LEAK TO BE THE (SENSOR-OIL PRESSURE (HOBBS-SWITCH) PN 83278 TO BE THE SOURCE OF THE LEAK.  THE SENSOR HAD FAILED INTERNALLY AND THE OIL WAS COMING FROM AROUND THE PRONGS INSIDE THE CONNECTOR AREA.  PROBABLE CAUSE-BAD DESIGN.  PREVENT REOCCURRENCES-UNKNOWN.  (K)

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