# SDR AWXA0001154

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 29, 2000
- Submitted: December 29, 2000
- Operation: Air carrier
- Aircraft: [N803AW](https://openairdocs.org/aircraft/N803AW), registered now
- Make and model: Airbus A319-132
- Registry model: [Airbus A319-132](https://openairdocs.org/model/airbus-a319-132) (OpenAirDocs)
- Aircraft serial: 931
- Aircraft time: 8,020 hours, 3,712 cycles
- System (JASC): [2450 · AC Power Distribution System](https://openairdocs.org/jasc/2450)
- Part: Contactor
- Condition: Failed
- Location: Bus Switch
- Stage of operation: CL
- How discovered: O
- Nature of condition: H, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AWXA0001154

## Discrepancy

PHX - AIR TURNBACK - ON DEPARTURE AT APPROX 3000FT MSL THE CENTER ESSENTIAL BUS LOST POWER; CREW COMPLIED WITH ECAM ACTION AND RETURNED TO PHX; ND NR 1 WAS NOT POWERED, PFD NR 1 OPERATED NORMAL; AN OVERWEIGHT LANDING WAS MADE, SINK RATE WAS LESS THAN 200 FPM ON TOUCHDOWN. MAINTENANCE TROUBLESHOT IAW THE TSM AND REPLACED THE FOLLOWING PARTS: A.C. ESS. BUS SWITCHING CONTRACTOR P/N (MANUFACTURER ECE) 503CA02F1-02Y1, RECTIFIER P/N (MANUFACTURER ALLIED SIGNAL) NSA932901-02C, AND RELAY P/N (MANUFACTURER ALLIED SIGNAL) NSA932843AL01; ALL CHECKS GOOD; REF AMM 24-50-00.

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