# SDR IPXA2026040163446

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 31, 2026
- Submitted: April 1, 2026
- Operation: Air carrier
- Aircraft: [N426UP](https://openairdocs.org/aircraft/N426UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25457
- Aircraft time: 33,011 hours, 22,219 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cabin
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2026040163446

## Discrepancy

OILY SMELL START UP AND TAKEOFF REPLACED NR 2 ENG.   ACCOMPLISHED HIGH POWER RUNS ON LT AND RT ENGINES WITH ALL BLEED SOURCES ISOLATED AND PACKS SELECTED ON. CONFIRMED ODOR IS COMING FROM R/H ENGINE AT HIGH POWER SETTING WITH L/H BLEED OFF. FOUND WITH LT ENGINE OPERATING AT HIGH POWER AND R/H BLEED SELECTED OFF THE ODOR DISSIPATED. ALSO, WITH APU AS THE ONLY BLEED SOURCE FOUND NO ODOR NOTED. FURTHER TROUBLESHOOTING REQUIRED.

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