# SDR 95ZZZX797

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 23, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N58ZP](https://openairdocs.org/aircraft/N58ZP), registered now
- Make and model: Cessna 421C
- Registry model: [Cessna 421C](https://openairdocs.org/model/cessna-421c) (OpenAirDocs)
- Aircraft serial: 421C0705
- System (JASC): [7120 · Engine Mount Section](https://openairdocs.org/jasc/7120)
- Part: Beam
- Part number: 505403042
- Condition: Cracked
- Location: Lt Eng Aft
- Part time: 6,073 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX797

## Discrepancy

UPON REMOVING LEFT ENGINE FOR TBO REPLACEMENT, INSPECTION OF THE NACELLE STRUCTURE REVEALED THE AFT ENGINE BEAM WAS CRACKED AT THE BEND WHERE THE OUTBOARD TAB ATTACHES TO THE FORE AND AFT ENGINE BEAM.  THE CRACK IS APPROXIMATELY ONE INCH LONG AND ORIGINATES FROM THE AFT END OF THE BEND.

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