# SDR UALA2012111906687

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 17, 2012
- Submitted: December 13, 2012
- Operation: Air carrier
- Aircraft: N174UA
- Make and model: Boeing 747422
- Aircraft serial: 24381
- Aircraft time: 88,965 hours, 9,923 cycles
- Engine: Pwa PW4056
- System (JASC): [2820 · Aircraft Fuel Distribution System](https://openairdocs.org/jasc/2820)
- Part: Valve
- Part number: 40885
- Part serial: 4029
- Condition: Faulty
- Location: Fuel System
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012111906687

## Discrepancy

NR 1 MAIN FUEL TANK CONTINUES TO TAKE FUEL AFTER FUELING COMPLETE AND VALVE INDICATING CLOSED.  MANUALLY CLOSED NR 1 TANK FUEL VALVE.  NR 1 FUEL VALVE INOP IN CLOSED POSITION PER MEL.  FUEL TEAM SUSPECTS REFUEL VALVE CONTROL UNIT IS THE FAULT.  NEED PCN 643-0005 REF IPC 28-21 -02-002 ITM 120.  REPLACED REFUEL VALVE CONTROL UNIT REF AMM, NO HELP -TANK 1 CONTINUES TO TAKE FUEL AFTER VALVE SHOWS CLOSED.  OPS CKD VALVE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.