# SDR UIEA2025081501125

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 16, 2024
- Submitted: August 19, 2025
- Operation: Air carrier
- Aircraft: [N642GT](https://openairdocs.org/aircraft/N642GT), registered now
- Make and model: Boeing 767-3Y0
- Registry model: [Boeing 767-3Y0](https://openairdocs.org/model/boeing-767-3y0) (OpenAirDocs)
- Aircraft serial: 26207
- Aircraft time: 87,743 hours, 25,395 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Starter
- Part number: 5198588
- Part serial: 794953
- Condition: Failed
- Location: Apu
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2025081501125

## Discrepancy

JUST BEFORE ENGINE START, A VERY STRONG ELECTRICAL SMELL OVERWHELMED THE FLIGHT DECK. SMELL GOES AWAY AFTER PACKS ARE SHUT OFF(<P>APU STARTER WAS BURNT AND WAS DETERMINED TO BE THE CAUSE OF THE SMOKE SMELL. R/R APU STARTER PER AMM 49-41-01. OPS CHK OK. NO DEFECTS NOTED. NO SMOKE SMELL NOTED. REF IPC 49-41-01-01 ITEM 50. R/R APU CONTROL UNIT PER AMM 49-61-05. OPS CHK OK. NO DEFECTS NOTED. REF IPC 49-61-05-01 FIG 5. SMOKE SMELL ADDRESSED PER CH 5 INSPECTION. NO MORE DEFECTS PER AMM 5-51-56.</P>)

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