# SDR QXEA9800758

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 24, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N478US](https://openairdocs.org/aircraft/N478US), registered now
- Make and model: Fokker F.28 MK4000
- Registry model: [Fokker F.28 MK4000](https://openairdocs.org/model/fokker-f-28-mk4000) (OpenAirDocs)
- Aircraft serial: 11227
- System (JASC): [5530 · Vertical Stabilizer](https://openairdocs.org/jasc/5530)
- Part: Frame
- Condition: Cracked
- Location: Frame 67-2
- 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/QXEA9800758

## Discrepancy

FRAME 67-2 CRACKED AT RIGHTHAND SIDE OF VERTICAL FIN BASE RIB WHERE ATTACHES TO COMPOSITE TAIL CONE.  STOP DRILLED BUT DAMAGE EXCEEDS 1.02 MAXIMUM CRACK LIMIT.  REPAIRED IAW HORIZON AIR EA 4-53-430.

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