# SDR SWAA2020072202262

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 18, 2020
- Submitted: July 22, 2020
- Operation: Air carrier
- Aircraft: [N251WN](https://openairdocs.org/aircraft/N251WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32510
- Aircraft time: 48,060 hours, 28,754 cycles
- Engine: Cfmint CFM567B242
- System (JASC): [7314 · Engine Fuel Pump](https://openairdocs.org/jasc/7314)
- Part: Pump
- Part number: 82830011
- Part serial: YA012943K
- Condition: Malfunctioned
- Location: Nr 2 Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2020072202262

## Discrepancy

CLIMBING THROUGH 12000 FEET,  NR 2 N1 LAGGED TARGET N1, BY 4%.  MANUALLY ADVANCING THRUST LEVER HAD NO INCREASE IN N1,  SPLIT GRADUALLY DECREASED AND MATCHED TARGET N1 AT 30;000 FT. NO OTHER LIGHTS OR ABNORMAL INDICATIONS.  AT 12000 NR 1, N1=94, NR 2=90, AT 17K, NR 1=96,  NR 2-93, AT 20K, N1=99,  NR 2=98, 30K NR 1=100, NR 2=100.  REMOVED AND REPLACED THE NR 2 ENGINE HMU AND FUEL PUMP IAW MT 773-11-00.

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