# SDR MTNA201301040001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 3, 2013
- Submitted: January 21, 2013
- Operation: Air carrier
- Aircraft: [N916FX](https://openairdocs.org/aircraft/N916FX), registered now
- Make and model: Aerosp ATR 42-300
- Registry model: [Aerosp ATR 42-300](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-300) (OpenAirDocs)
- Aircraft serial: 314
- Aircraft time: 24,482 hours, 27,204 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Line
- Condition: Damaged
- Location: Brake System
- Stage of operation: LD
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MTNA201301040001

## Discrepancy

LEFT BRAKE STARTS OUT WORKING FINE, BUT FAILS WITH CONTINUED USAGE.  BRAKE PEDAL GOES TO THE FLOOR WITHOUT STOPPING AIRCRAFT.  INSPECTED RIGID HYDRAULIC LINE FROM MASTER CYLINDER TO ZONE 1 FOR LEAKS.  REPLACED RIGID HYDRAULIC LINE FROM MASTER CYLINDER TO ZONE 1 IAW ATR42 M/M 20-23-13 BLED LOW PRESSURE LINE IAW ATR42 JIC 32-42 -00 BLD 10000 NO LEAKS FOUND TAXIED AIRCRAFT FOR EXTENDED AMOUNT OF TIME.  BRAKES OPERATED CORRECTLY IAW ATR42 JIC 32-42-00.  THE AIRCRAFT WAS RETURNED TO SERVICE.

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