# SDR 96ZZZX1809

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 8, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N376E](https://openairdocs.org/aircraft/N376E), registered now
- Make and model: Aerosp AS 355F1
- Registry model: [Aerosp AS 355F1](https://openairdocs.org/model/aerospatiale-as-355f1) (OpenAirDocs)
- Aircraft serial: 5213
- System (JASC): [6220 · Main Rotor Head](https://openairdocs.org/jasc/6220)
- Part: Bolt
- Part number: 350A37124520
- Condition: Broken
- Location: M/R Starflex
- Part time: 1,719 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/96ZZZX1809

## Discrepancy

FOUR BOLTS THAT SECURE THE MAIN ROTOR STARFLEX TO THE MAIN ROTOR MAST WERE FOUND BROKEN DURING TROUBLESHOOTING OF AN OUT-OF-BALANCE CONDITION WITH THE MAIN ROTOR SYSTEM.  THERE ARE A TOTAL OF 12 BOLTS IN THE SYSTEM.  AN ADDITIONAL 3 BOLTS FAILED WHEN THE SYSTEM WAS BEING DISASEMBLED.  ALL OF THE BOLTS IN THE MAST WERE FOUND SEVERELY CORRODED.

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