# SDR USAA2012112000031

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 19, 2012
- Submitted: November 21, 2012
- Operation: Air carrier
- Aircraft: [N433US](https://openairdocs.org/aircraft/N433US), registered now
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24555
- Aircraft time: 61,076 hours, 40,700 cycles
- Engine: Cfmint CFM563B2
- System (JASC): [7321 · Fuel Control/Turbine Engines](https://openairdocs.org/jasc/7321)
- Part: Mec
- Part number: 8063213
- Part serial: WYG64686
- Condition: Faulty
- Location: Lt Engine
- Part time: 53,889 hours, 34,965 cycles
- Stage of operation: TO
- How discovered: O
- Nature of condition: R
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2012112000031

## Discrepancy

ON TAKEOFF, LEFT ENGINE WHEN ADVANCED WOULD NOT ACCELERATE BEYOND 29% N1.  ALL TEMPERATURES AND PRESSURES NORMAL.  ENGINE START NORMAL. TAKEOFF WAS REJECTED AT LOW AIR/GROUND SPEED.  MAINTENANCE REMOVED AND REPLACED THE NR 1 ENGINE MEC ALONG WITH THE FUEL PUMP IAW J/C 03L50673003.  PERFORMED ENGINE GROUND TEST DATA SHEET J/C 03L50672010.  OPS CHECK NORMAL.

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