# SDR UIEA2020101272187

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 6, 2020
- Submitted: October 12, 2020
- Operation: Air carrier
- Aircraft: [N1181A](https://openairdocs.org/aircraft/N1181A), registered now
- Make and model: Boeing 767-3Y0
- Registry model: [Boeing 767-3Y0](https://openairdocs.org/model/boeing-767-3y0) (OpenAirDocs)
- Aircraft serial: 26206
- Aircraft time: 88,596 hours, 22,235 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Tru
- Part number: 28VS200Y4B2
- Part serial: 12076850
- Condition: Malfunctioned
- Location: Apu
- Stage of operation: TX
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2020101272187

## Discrepancy

APU FAULT ON FIRST ATTEMPT.  TRANSFERRED TO MDDR 135610, PER DDG 49-11-01A.  REMOVED AND REPLACED APU TRANSFORMER RECTIFIER UNIT, AS PER AMM 24-32-04 AND APU FAULT ANN SWITCH ASSEMBLY, AS PER AMM 33-16-02.  OPERATIONAL CHECKS FOUND OK.  THIS WILL CLEAR MDDR 135610.

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