# SDR IPXA2025040837319

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 13, 2025
- Submitted: April 8, 2025
- Operation: Air carrier
- Aircraft: [N473UP](https://openairdocs.org/aircraft/N473UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 28846
- Aircraft time: 25,469 hours, 16,974 cycles
- Engine: Rroyce RB211535E4
- System (JASC): [7230 · Turbine Engine Compressor Section](https://openairdocs.org/jasc/7230)
- Part: Case
- Condition: Cracked
- Location: Lp Compressor
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2025040837319

## Discrepancy

NR 1 ENG LP COMPRESSOR INNER CASE AFT AREA BTW 8-10 O'CLOCK WITH CRACKS AROUND HOLES (2 EA)-DOT 139/45-MR/139. REVIEWED

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