# SDR 99ZZZX4332

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 11, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N5074R
- Make and model: Hughes 369D
- Aircraft serial: 1151D
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Seal
- Part number: 6894171
- Condition: Delaminated
- Location: Gearbox
- Part time: 13,826 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX4332

## Discrepancy

DURING REMOVAL OF TURBINE SECTION, A PREVIOUSLY REPAIRED AREA AROUND THE TURBINE SEAL BOSS ON THE GEARBOX COVER HAD DELAMINATED.  REPLACED GEARBOX.

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