# SDR USAA2011123000010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 29, 2011
- Submitted: January 13, 2012
- Operation: Air carrier
- Aircraft: N516AU
- Make and model: Boeing 737-3B7
- Registry model: [Boeing 737-3B7](https://openairdocs.org/model/boeing-737-3b7) (OpenAirDocs)
- Aircraft serial: 23702
- Aircraft time: 68,391 hours, 44,353 cycles
- Engine: Cfmint CFM563B2
- Engine time: 54,992 hours, 37,632 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Failed
- Location: Nr 1
- Stage of operation: CL
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2011123000010

## Discrepancy

NR 1 ENGINE SURGED PLUS TO MINUS 3 PERCENT N1 DURING CLIMB TO ALTITUDE.  EGT, N2, FF SURGED AS WELL.  AUTOTHROTTLES WERE IN USE.  THRUST LEVER DID NOT FOLLOW ENGINE SURGE ALSO NR 1 THRUST LEVER 1 KNOB WIDTH PAST NR 2 DURING CLIMB.  OK IN CRUISE AND DESCENT.  REMOVED AND REPLACED THE #1 ENGINE ASSEMBLY PER J/C 03L50671001.

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