# SDR 98ZZZX792

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 12, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N379VM](https://openairdocs.org/aircraft/N379VM), registered now
- Make and model: Beech E-90
- Registry model: [Beech E-90](https://openairdocs.org/model/beech-e-90) (OpenAirDocs)
- Aircraft serial: LW27
- System (JASC): [5512 · Horizontal Stabilizer, Plate/Skin](https://openairdocs.org/jasc/5512)
- Part: Skin
- Condition: Cracked
- Location: Lt Horiz Stab
- Part time: 4,271 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/98ZZZX792

## Discrepancy

IT APPEARS THAT VIBRATION AND LEFT HAND PROPELLER HARMONICS CAUSED OIL CANNING BETWEEN TWO STRINGERS THAT INDUCED THE ORIGINAL SKIN CRACK WHICH ENLARGED ITSSELF.  FOUND DURING THE BEECH COMPLETE INSPECTION.  SUBMITTER STATED IF GONE UNDETECTED COULD CAUSE HORIZONTAL STABILIZER FAILURE WITH CATASTROPHIC RESULTS. SUBMITTER STATED TWELVE AMT'S AND REPRESENTATIVES OF AVIATION HAVE NEVER SEEN THIS BEFORE.

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