# SDR 99ZZZX557

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 22, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N118SF
- Make and model: Beech 99
- Registry model: [Beech 99](https://openairdocs.org/model/beech-99) (OpenAirDocs)
- Aircraft serial: U32
- System (JASC): [5512 · Horizontal Stabilizer, Plate/Skin](https://openairdocs.org/jasc/5512)
- Part: Skin
- Condition: Cracked
- Location: Horiz Stabilizer
- Part time: 10,930 hours
- Component: 11562001027
- 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/99ZZZX557

## Discrepancy

DURING A ROUTINE INSPECTION, CRACKS WERE DISCOVERED IN THE TOP SKIN OF THE LEFT HORIZONTAL STABILIZER BEGINNING UNDER THE DE-ICE BOOT TRAVELING AFT ALONG THE ROW OF RIVETS AT STA 87 TO THE FORWRD J-CHANNEL.  SI NR 0131-130 HAD BEEN PREVIOUSLY C/W.  SUBMITTER SUGGESTED POSSIBLE CAUSE AS VIBRATION DUE TO SLIP STREAM.

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