# SDR HEEA0014241

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 19, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N437PH](https://openairdocs.org/aircraft/N437PH), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53072
- System (JASC): [6520 · Tail Rotor Gearbox](https://openairdocs.org/jasc/6520)
- Part: Housing
- Part number: 206011721113
- Condition: Mismanufactured
- Location: T/R
- Part time: 1,429 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HEEA0014241

## Discrepancy

T/R CONTROL HOUSING MISMANUFACTURED.  THE BORE OF THE MS27641-4 BEARING IS NOT MACHINED ENOUGH ON ONE SIDE.

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