Narrative:

Taxi in [we observed] EICAS advisory messages lh brake fault and rh brake fault; aircraft lunged forward; messages went away and normal braking returned. Wrote up the event; talked with maintenance control about the problem. I was told that there was a service letter from embraer in march 2011 regarding the issue. The problem has been verified according to the service letter; brake pressure is being removed and the system resets within 1-4 seconds. Three days later I flew an aircraft that had a write up a couple of pages back for the same indication. Over the last three and a half years I have noticed this but generally it was on approach with the gear down. I have also seen the same indication enroute at cruise. Company pilots should be notified of the problem. In my opinion this is a huge safety issue that could produce disastrous results; especially on shorter runways. If this event would happen in the middle of the braking phase on touchdown; quite possibly a 4 second loss of pressure to two brakes; the aircraft might find itself off the end of the runway.

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Original NASA ASRS Text

Title: EMB170 Captain experiences left and right hand brake faults during taxi in that quickly reset. Reporter believes the problem is the subject of an Embraer service bulletin dated March 2011.

Narrative: Taxi in [we observed] EICAS advisory messages LH Brake Fault and RH Brake Fault; aircraft lunged forward; messages went away and normal braking returned. Wrote up the event; talked with Maintenance Control about the problem. I was told that there was a service letter from Embraer in March 2011 regarding the issue. The problem has been verified according to the service letter; brake pressure is being removed and the system resets within 1-4 seconds. Three days later I flew an aircraft that had a write up a couple of pages back for the same indication. Over the last three and a half years I have noticed this but generally it was on approach with the gear down. I have also seen the same indication enroute at cruise. Company pilots should be notified of the problem. In my opinion this is a huge safety issue that could produce disastrous results; especially on shorter runways. If this event would happen in the middle of the braking phase on touchdown; quite possibly a 4 second loss of pressure to two brakes; the aircraft might find itself off the end of the runway.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.