# SDR P4YA2011050900001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 9, 2011
- Submitted: May 11, 2011
- Operation: Air carrier
- Aircraft: N5748M
- Make and model: Bell 214ST
- Registry model: [Bell 214ST](https://openairdocs.org/model/bell-214st) (OpenAirDocs)
- Aircraft serial: 28102
- Aircraft time: 11,679 hours, 3,020 cycles
- Engine: Ge CT72A
- System (JASC): [6510 · Tail Rotor Drive Shaft](https://openairdocs.org/jasc/6510)
- Part: Drive Shaft
- Part number: 214040622005
- Condition: Cracked
- Location: Tail Rotor
- 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/P4YA2011050900001

## Discrepancy

DURING A 25HR CHECK, THE NR 6 TAIL ROTOR DRIVESHAFT MOUNTING FLANGE WAS DISCOVERED CRACKED ON THE OUTPUT SIDE OF THE IGB COUPLING.  THE CRACKS ARE AROUND THE BOLT HOLES.  THE TRDS IS ON-CONDITION.

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