# SDR O2GA2020032001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 14, 2020
- Submitted: March 20, 2020
- Operation: Air carrier
- Aircraft: N868UP
- Make and model: Beech B300
- Registry model: [Beech B300](https://openairdocs.org/model/hawker-beechcraft-b300) (OpenAirDocs)
- Aircraft serial: FL1099
- Aircraft time: 1,940 hours, 1,695 cycles
- System (JASC): [3243 · Master Cylinder/Brake Valve](https://openairdocs.org/jasc/3243)
- Part: Master Cylinder
- Part number: 9038000123
- Part serial: APW5633
- Condition: Leaking
- Location: Brake System
- Part time: 171 hours, 149 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/O2GA2020032001

## Discrepancy

THE CREW EXPERIENCED A LEFT MAIN LANDING GEAR BRAKE ISSUE DURING TAXI. POST INSPECTION LEFT MAIN TIRES WERE FLAT SPOTTED. MAINTENANCE REPLACED THE #1 AND #2 WHEEL/ TIRE AND BRAKE ASSEMBLIES. PILOT SIDE LEFT BRAKE MASTER CYLINDER WAS ALSO REPLACED. SYSTEM AND TAXI CHECK WAS PERFORMED WITH NO DEFECTS NOTED. AIRCRAFT WAS RETURNED TO SERVICE.

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