# SDR R7MR33263

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 27, 2001
- Submitted: July 5, 2001
- Operation: Air carrier
- Aircraft: [N901CF](https://openairdocs.org/aircraft/N901CF), registered now
- Make and model: Doug MD 900
- Registry model: [Doug MD 900](https://openairdocs.org/model/mcdonnell-douglas-helicopter-md-900) (OpenAirDocs)
- Aircraft serial: 90000012
- System (JASC): [6220 · Main Rotor Head](https://openairdocs.org/jasc/6220)
- Part: Bearing
- Part number: 900R3100002105
- Part serial: 90000012
- Condition: Worn
- Location: Main Rotor
- Part time: 4,396 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/R7MR33263

## Discrepancy

ELASTOMERIC LAMINATES WORN BEYOND SERVICEABLE LIMITS, WHICH IS CAUSING DIFFICULTY WITH BALANCING THE MAIN ROTOR HEAD ASSEMBLY.  REPLACED WITH NEW UNIT, CORRECTED PROBLEM.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.