# SDR QMLD201110052601

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2011
- Submitted: October 6, 2011
- Operation: Air carrier
- Aircraft: N527MB
- Make and model: Bolkms BK117A4
- Aircraft serial: 7103
- Aircraft time: 132,666 hours, 41,800 cycles
- System (JASC): [5531 · Vertical Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5531)
- Part: Rib
- Part number: 1173040802
- Condition: Cracked
- Location: Zone 300
- Part time: 132,666 hours, 41,800 cycles
- 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/QMLD201110052601

## Discrepancy

THE TOP RIB OF THE VERTICAL FIN WHERE THE ANTI COLLOSION LIGHT BASE IS MOUNTED, EXIBITS A CRACK RADIATING FROM THE NUTPLATE THAT IS MOUNTED UNDERNEATH.

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