# SDR IPXA2025111223417

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 11, 2025
- Submitted: November 12, 2025
- Operation: Air carrier
- Aircraft: [N402UP](https://openairdocs.org/aircraft/N402UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 23724
- Aircraft time: 38,986 hours, 26,687 cycles
- System (JASC): [7500 · Engine Bleed Air System](https://openairdocs.org/jasc/7500)
- Part: Duct
- Condition: Leaking
- Location: Lt Bleed
- Stage of operation: TX
- 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/IPXA2025111223417

## Discrepancy

DURING LEFT ENGINE START, LEFT BLEED DUCT LEAK.  ABORTED ENGINE START, RAN CHECKLIST SMOKE VISIBLE IN THE COCKPT AND ON THE GROUND.  RESULTED IN BTB.

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