# SDR SWAA2013121123169

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2013
- Submitted: December 11, 2013
- Operation: Air carrier
- Aircraft: [N452WN](https://openairdocs.org/aircraft/N452WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29846
- Aircraft time: 35,248 hours, 20,609 cycles
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Hmu
- Part number: 442597
- Part serial: BECW2509
- Condition: Faulty
- Location: Nr 1 Engine
- Stage of operation: TO
- How discovered: O
- Nature of condition: R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2013121123169

## Discrepancy

AIR RETURN ON TAKEOFF NR 1 ENG WOULD NOT GO ABOVE APPROXIMATELY 62%.  R & R NR 1 ENG HMU MT.

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