# SDR AALA202101029012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 30, 2020
- Submitted: January 6, 2021
- Operation: Air carrier
- Aircraft: [N936NN](https://openairdocs.org/aircraft/N936NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31176
- Aircraft time: 21,936 hours, 9,130 cycles
- Engine: Cfmint CFM567B242
- System (JASC): [7931 · Engine Oil Pressure](https://openairdocs.org/jasc/7931)
- Part: Engine
- Condition: Shutdown
- Location: Nr 2
- Part time: 21,936 hours, 9,130 cycles
- Stage of operation: CR
- How discovered: V
- Nature of condition: K
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202101029012

## Discrepancy

AIRCRAFT WAS GROUNDED.  AIR INTERRUPT DUE TO INFLIGHT SHUTDOWN OF NR 2 ENGINE FOR APPARENT LOSS OF OIL QUANTITY.  CREW OPTED TO RETURN TO FIELD, SINGLE ENGINE TIME WAS APPROXIMATELY 45 MINUTES.  SUPPLEMENTAL REPORT: NR 2 ENGINE REPLACED, IAW AMM 71-94-01, DUE TO HISTORY OF TEFLON FINDINGS.  OPERATIONS CHECK GOOD. (CLOSED)

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