# SDR CA090420003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2009
- Submitted: May 13, 2009
- Operation: General aviation
- Make and model: Airbus A330-300
- Registry model: [Airbus A330-300](https://openairdocs.org/model/airbus-a330-300) (OpenAirDocs)
- Aircraft time: 40,365 hours
- Engine: Rroyce RB211*
- System (JASC): [2330 · Entertainment System](https://openairdocs.org/jasc/2330)
- Part: Electrical Box
- Condition: Damaged
- Location: Seat
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA090420003

## Discrepancy

DURING THE COURSE OF AN RADIO MODIFICATION, SPECIFIC SNAGS APPEARED DURING THE POST-INSTALLATION AND TESTING PHASE OF THE CHECK WITH THE FOLLOWING DISCREPANCY NOTED:  "DURING THE CONTOUR SEAT POWER UPS, MCU NR 1, J2 PORT SHORTED OUT MAKING MCU UNSERVICABLE"  MCU NR 1 J2 PORT WAS SHORTED OUT MAKING THE MCU U/S.  DURING THE POWER UP OF THE SEATS 1-9 IN SEQUENCE, ARRIVING AT SEAT 5F THE SIB (SEAT INTERFACE BOX) STARTED TO ARC AND TRIPPED OFF MCU NR 1 AND DAMAGED THAT LRU.  CAUSE HAS BEEN DETERMINED TO BE A FAULTY SEB FROM CONTOUR UNIT REPLACED.  FAULTY UNIT SENT TO MANUFACTURER FOR FURTHER ANALYSIS.

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