# SDR 99ZZZX2883

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 2, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N117LU
- Make and model: Bolkms BK117B1
- Aircraft serial: 7144
- System (JASC): [6321 · Main Rotor Brake](https://openairdocs.org/jasc/6321)
- Part: Relief Valve
- Part number: 20100
- Condition: Failed
- Location: Rotor Brake
- Part time: 8 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/99ZZZX2883

## Discrepancy

ROTOR BRAKE WILL NOT BUILD UP ANY PRESSURE.  REF:  RMA R020183 MCN 64.  REMOVED AND REPLACED.

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