# SDR FDEA202104210963

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 21, 2021
- Submitted: April 23, 2021
- Operation: Air carrier
- Aircraft: [N920FD](https://openairdocs.org/aircraft/N920FD), registered now
- Make and model: Boeing 757-23A
- Registry model: [Boeing 757-23A](https://openairdocs.org/model/boeing-757-23a) (OpenAirDocs)
- Aircraft serial: 24289
- Aircraft time: 77,155 hours, 28,544 cycles
- Engine: Rroyce RB211535E4
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Case
- Condition: Corroded
- Location: Nr 1 Engine
- 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/FDEA202104210963

## Discrepancy

ENGINE #1 LP COMPRESSOR FRONT CASE OUTER SURFACE FORWARD OF KEVLAR   WRAPPING IS CORRODED FROM 4 O'CLOCK TO 12 O'CLOCK POSITION (AFT LOOKING FORWARD) SNRM RECTIFIED AS PART OF ESN 30690 REMOVAL AND INSTALLATION OF ESN 30775 AS PER   WO   79687 SEQ: 000235

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