# SDR AUS20010752

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 18, 2001
- Submitted: August 7, 2001
- Operation: General aviation
- Make and model: Boeing 747438
- Engine: Rroyce RB211524G19
- System (JASC): [2822 · Fuel Boost Pump](https://openairdocs.org/jasc/2822)
- Part: Pump
- Part number: 6072101
- Condition: Misinstalled
- Location: Fuel System
- Stage of operation: IN
- How discovered: O
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AUS20010752

## Discrepancy

(AUS) TRANSFER PUMP CONNECTORS INCORRECTLY WIRED. THE PUMPS HAD WIRINGSWAPPED AT PIN 2 AND PIN 3. THE WIRES WERE RECONNECTED IN THE BELIEF THAT THE WIRING CONFIGURATION WAS INCORRECT. THE AIRCRAFTHAD BEEN SUPPLIED WITH THE WIRING IN A NON-STANDARD FORMAT. INVESTIGATION FOUND THAT SOME AIRCRAFT HAD BEEN WIRED DIFFERENTLY AT MANUFACTURE. THIS WIRING CHANGE WAS NOT INCORPORATED IN THESERVICE BULLETIN.

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