# SDR UIEA2020082001827

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 17, 2020
- Submitted: August 20, 2020
- Operation: Air carrier
- Aircraft: [N416MC](https://openairdocs.org/aircraft/N416MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 32838
- Aircraft time: 76,912 hours, 12,731 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: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2020082001827

## Discrepancy

CRACK DAMAGE ON LWR CHORD OF RH HST RIB AT HSBL 421.5. ACCOMPLISHED EI NO T2020A55M-1851 REV 1 THAT ATTACHED TO WD NO. 4824624. JOB COMPLETED AND CONDITION CHECK NORMAL.

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