# SDR 2004FA0000331

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 13, 2004
- Submitted: April 13, 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)
- Engine: Pwc PW207E
- System (JASC): [6220 · Main Rotor Head](https://openairdocs.org/jasc/6220)
- Part: Hub
- Part number: 900R2101006107
- Part serial: 0957650195
- Condition: Cracked
- Location: Upper Hub Assy
- Part time: 102 hours
- Component: Upper Hub Assy, Doug
- Component part number: 900R1101000B119
- Stage of operation: IN
- How discovered: W
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2004FA0000331

## Discrepancy

DURING ACCOMPLISHMENT OF AD 2002-10-05 (MAIN ROTOR UPPER HUB INSP.)  FOUND (3) OUT OF (10) BOLT HOLES CRACKED AS DEPICTED IN SERVICE BULLETIN 900-072. CRACKS START IN BOLT HOLE CHAMFER. PART TOTAL TIME: 102 HRS.

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