# SDR QMLA2013090413126

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 4, 2013
- Submitted: September 5, 2013
- Operation: Air carrier
- Aircraft: [N557UH](https://openairdocs.org/aircraft/N557UH), registered now
- Make and model: Bell 430
- Registry model: [Bell 430](https://openairdocs.org/model/bell-430) (OpenAirDocs)
- Aircraft serial: 49120
- Aircraft time: 5,414 hours, 17,317 cycles
- Engine: Allsn 250C40B
- System (JASC): [6520 · Tail Rotor Gearbox](https://openairdocs.org/jasc/6520)
- Part: Stud
- Condition: Broken
- Location: T/R Gearbox
- Part time: 7,207 hours
- Component: Gearbox, Bell
- Component part number: 222042001103
- 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/QMLA2013090413126

## Discrepancy

STUD HAD SHEARED OFF OF THE TAIL ROTOR GEARBOX MOUNTING FLANGE AT ONE O`CLOCK POSITION.  NOTICED POSITIONS THREE, FIVE AND ELEVEN O`CLOCK STUDS WERE LOOSE AS WELL.   REMOVED TAIL ROTOR GEARBOX FROM THE ACFT.

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