# SDR EIAA2010006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 16, 2010
- Submitted: February 25, 2010
- Operation: Air carrier
- Aircraft: N489EV
- Make and model: Boeing 747230B
- Aircraft serial: 23393
- System (JASC): [2197 · Air Conditioning System Wiring](https://openairdocs.org/jasc/2197)
- Part: Wire
- Condition: Burned
- Location: Outflow Valve
- Stage of operation: IN
- How discovered: V
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/EIAA2010006

## Discrepancy

AUTO PRESS CONTROL A/C CIRCUIT BREAKER TRIP, LEF OUT FLOW VALVE ON DMI.  FOUND A LARGE BUNDLE OF WIRES SEVERELY DAMAGED (APPROXIMATELY 20-30) AT STA 2020-2040, ABOVE BULK CARGO BAY.  REPAIRED WIRE BUNDLE TO LT OUTFLOW VALVE PER AMM 20 STANDARD WIRE PRACTICE, 3 EACH DIODES REPLACED.  REPAIRED WIRE BUNDLE TO AUTO PRESS CONT SPLICED ALL WIRES USING AMM 21-31-01.

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