# SDR SWAA115523A

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 28, 2011
- Submitted: August 2, 2011
- Operation: Air carrier
- Aircraft: [N510SW](https://openairdocs.org/aircraft/N510SW), registered now
- Make and model: Boeing 737-5H4
- Registry model: [Boeing 737-5H4](https://openairdocs.org/model/boeing-737-5h4) (OpenAirDocs)
- Aircraft serial: 24187
- Aircraft time: 64,723 hours, 61,490 cycles
- Engine: Cfmint CFM563B1US
- System (JASC): [7314 · Engine Fuel Pump](https://openairdocs.org/jasc/7314)
- Part: Pump
- Part number: 7086005
- Part serial: 10602
- Condition: Faulty
- Location: Nr 2 Engine
- Stage of operation: DE
- How discovered: O
- Nature of condition: E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA115523A

## Discrepancy

DECLARED EMERGENCY - ON DESCENT FROM FL 350, WITH THROTTLES AT IDLE AND N1 APPROX 60 PERCENT, NOTICED A LOUD POP AND VIBRATION COMING FROM NR 2 ENGINE, ON LEVEL OFF BOTH THROTTLES SLOWLY ADVANCED AND OPERATED NORMAL, AGAIN ON DESCENT RETARDED APPROX 60 PERCENT NR 2 LOUD POP SLIGHT EGT SPIKE.  STABILIZED AT IDLE, SEVERAL CONTINUOUS COMP STALLS "POPS" WHEN THROTTLE WAS ADVANCED ABOVE 60 PERCENT NO LIMITS WERE EXCEEDED.  REMOVED AND REPLACED NR 2 ENGINE MEC AND FUEL PUMP ASSY PER MM.

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