# SDR SIMA20121106004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 6, 2012
- Submitted: November 8, 2012
- Operation: Air carrier
- Aircraft: [N658AE](https://openairdocs.org/aircraft/N658AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145760
- Aircraft time: 23,433 hours, 20,270 cycles
- System (JASC): [7932 · Engine Oil Quantity](https://openairdocs.org/jasc/7932)
- Part: Sensor
- Part number: 23063236
- Part serial: FRTR694BB
- Condition: Failed
- Location: Oil System
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20121106004

## Discrepancy

ON FLIGHT 4271 THE CREW REPORTED AT FLIGHT LEVEL 370 THE NR 1 ENGINE OIL WENT FROM 10 QUARTS TO AMBER AT 1 QUART.  THERE WAS NO EICAS MESSAGE NOTED.  THE CREW CONTACTED MAINTENANCE AND DIVERTED TO CVG.  THE CREW DECLARED AN EMERGENCY AS A PRECAUTIONARY MEASURE AND LANDED WITHOUT INCIDENT.  REMOVED AND REPLACED OIL LEVEL AND LOW-LEVEL WARNING SENSOR IAW RR MM 79-35-20-000-801 AND 79-35-20-400-801.  THE OPERATIONAL CHECK WAS GOOD.  THE AIRCRAFT WAS RETURNED TO SERVICE.

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