# SDR UALA2010032300960

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 23, 2010
- Submitted: April 1, 2010
- Operation: Air carrier
- Aircraft: [N222UA](https://openairdocs.org/aircraft/N222UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30553
- Aircraft time: 36,287 hours, 4,447 cycles
- Engine: Pwa PW40903
- System (JASC): [4930 · APU Engine Fuel and Control](https://openairdocs.org/jasc/4930)
- Part: Valve
- Part number: 32908144
- Condition: Leaking
- Location: Apu Fuel
- Stage of operation: IN
- How discovered: 9
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2010032300960

## Discrepancy

FUEL DRIPPING FROM APU FUEL VENT.  FUEL LEAKING FROM FWD DRAIN LINE 50-60 DROPS PER MIN.  NO LEAK WITH APU OFF.  SUSPECT SURGE CONTROL VALVE ACTUATOR. THE FUEL PUMP SHAFT SEAL, IGV ACTR & SCV HAVE TELL TALE WITNESS DRAINS TO EASILY IDENTIFY A FAULTY UNIT.  EACH HAS AN ALLOWABLE 1CC IAW MIN RATE.  RPR OR RPL AS NEEDED.  VERIFIED SURGE VALVE WAS SOURCE OF FUEL. REPLACED SURGE 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.