# SDR HEEA084934

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 27, 2003
- Submitted: March 3, 2003
- Operation: Air carrier
- Make and model: Bell 412
- Registry model: [Bell 412](https://openairdocs.org/model/bell-412) (OpenAirDocs)
- System (JASC): [6520 · Tail Rotor Gearbox](https://openairdocs.org/jasc/6520)
- Part: Case
- Part number: 212040468001
- Part serial: AFS2039
- Condition: Damaged
- Location: T/R Gearbox
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HEEA084934

## Discrepancy

RECEIVED HIGH BACKLASH READINGS WHEN GEARBOX WAS REASSEMBLED 0.012, 0.0125 AND 0.0125 INCH.  MAXIMUM BACKLASH ALLOWED IS 0.011 INCH.

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