# SDR UIEA2011020800067

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 8, 2011
- Submitted: March 5, 2011
- Operation: Air carrier
- Aircraft: [N409MC](https://openairdocs.org/aircraft/N409MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 30558
- Aircraft time: 47,293 hours, 7,124 cycles
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Rib
- Condition: Cracked
- Location: Horizontal Stab
- 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/UIEA2011020800067

## Discrepancy

CRACK - RIB AND UPPER CLIP L/E STA 151: LT HORIZONTAL STAB FIXED L/E NOSE CAVITY.  REPAIRED DAMAGE AREA IAW EI T2011A55B-300 REV 00 AND REV 01.

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