# SDR UALA2009102103280

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 20, 2009
- Submitted: October 28, 2009
- Operation: Air carrier
- Aircraft: [N219UA](https://openairdocs.org/aircraft/N219UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30551
- Aircraft time: 36,316 hours, 4,501 cycles
- Engine: Pwa PW40903
- System (JASC): [4930 · APU Engine Fuel and Control](https://openairdocs.org/jasc/4930)
- Part: Fuel Control
- Condition: Malfunctioned
- Location: Apu
- Component: Apu
- Component part number: 4417617
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2009102103280

## Discrepancy

APU WILL NOT START.   COUT RESISTANCE CHK OF FUEL CLUSTER UNIT PIN 9 AND 10 FUEL CLUSTER RECEPTACLE FOUND MORE THAN 1000 OHMS (32000 OHMS) SUSPECT FUEL CLUSTER. APU FUEL CLUSTER REPLACED. ACCOMPLISHED SUCCESSFUL START AT ALTITUDE. CREW COMMENTS: APU STARTED NORMALLY AT FL 340 AND OPERATED NORMALLY FOR 5 MIN. APU OPERATIONS NOW OKAY.

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