# SDR UALA2011091404973

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 11, 2011
- Submitted: October 7, 2011
- Operation: Air carrier
- Aircraft: N559UA
- Make and model: Boeing 757222
- Aircraft serial: 26657
- Aircraft time: 63,322 hours, 23,367 cycles
- Engine: Pwa PW2037
- System (JASC): [2400 · Electrical Power System](https://openairdocs.org/jasc/2400)
- Part: Lug
- Condition: Damaged
- Location: Electrical Sys
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011091404973

## Discrepancy

FIRST OFFICER INST XFER STATUS MESSAGE PRESENT.  DURING TROUBLESHOOTING, FOUND A SET OF BURNED WIRE LUGS AT TERMINAL BLOCK TB5014 PHASE A INSIDE OF THE P6-4 PANEL BOTTOM.  WIRES ARE IDENTIFIED AS W2020-0001-06 PER WDM.  SUSPECT MESSAGES ARE RELATED TO BUS PHASE NOT POWERED.  TRIMMED DAMAGED WIRE AND REPLACED TERMINAL LUGS AT TB5014 TERMINAL NR 1.  W2020-0001-06.  NO OTHER WIRE DAMAGE FOUND, RT FMC AND INST XFER STATUS OKAY.

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