# SDR 2004FA0000877

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 12, 2004
- Submitted: October 12, 2004
- Operation: General aviation
- Aircraft: [N3PD](https://openairdocs.org/aircraft/N3PD), registered now
- Make and model: Doug MD 900
- Registry model: [Doug MD 900](https://openairdocs.org/model/mcdonnell-douglas-helicopter-md-900) (OpenAirDocs)
- Aircraft time: 1,478 hours
- Engine: Pwc PW207E
- System (JASC): [6220 · Main Rotor Head](https://openairdocs.org/jasc/6220)
- Part: Rotor Head
- Condition: Cracked
- Location: Main Rotor
- Part time: 1,478 hours
- Stage of operation: HO
- How discovered: O
- Nature of condition: E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2004FA0000877

## Discrepancy

HAD VIBRATION (.7 IPS) CAUTION ON IDS DURING FLIGHT AND HIGH VIBRATION ON SHUT DOWN BETWEEN 30-40 PERCENT NR.  INSPECTED MAIN ROTOR SYSTEM IAW MAINTENANCE MANUAL AND FOUND (3) OUT OF (5) FLEXBEAMS CRACKED.  REPLACING FLEXBEAMS WITH NEW UPDATED FLEXBEAMS.

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