# SDR IPXA2025111323417

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 11, 2025
- Submitted: November 13, 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: 38,990 hours, 26,689 cycles
- System (JASC): [7500 · Engine Bleed Air System](https://openairdocs.org/jasc/7500)
- Part: Duct
- Condition: Leaking
- Location: Bleed Air System
- 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/IPXA2025111323417

## Discrepancy

DURING LEFT ENGINE START, LEFT BLEED DUCT BLEED LEAK.  ABORTED ENGINE START, RAN CHECKLIST SMOKE VISIBLE COCKPIT ON GROUND. RESULTED IN BTB. REPLACED 2 DAMAGED DUCTS IN AFT LOWER CARGO PIT REF M/M 36-11-01. PRESSURIZED DUCTS NO LEAKS NOTED.

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