Narrative:

Just prior to the FAF I had some light rain but could still see the runway. I continued the approach and could see it was slightly wet; I might have been maybe 5 KTS fast on the vref and set it down well within the first 1;000 ft of the runway. When I landed speed brakes were deployed but when I started braking it didn't slow down so I kept applying more and more until I was hard on them and nothing was happening. By the time I realized I wasn't going to stop it was too late to go-around and I just kept applying full brakes. Just before we ran off the runway I steered it to the left to avoid the approach lights and came to a stop 390 ft from the end of the runway. I shut down the aircraft and let the passengers out. No harm came to the passengers and I managed to clear the runway lights causing no damage on the airport property. No apparent damage on the aircraft other than having gone down in the mud to the axle of the tires.I got back in; called unicom and gave them my number so they could pick us up. The passengers seemed unaffected and just happy I didn't try a go-around. After we were back in the FBO one of the linemen said there were skid marks only on the left side main tire and nothing on the left side all along the runway. Pictures were taken for reference. A couple days later an aircraft recovery company took the aircraft off the mud; back on the taxiway and into the FBO. No physical damage was found so we decided to have citation mobile unit take a look at the aircraft. The chief pilot told me all they found were the right brakes broken. Just relieved no harm came to the passenger and no property or aircraft damage was caused.

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Original NASA ASRS Text

Title: A CE-550 ran off the end of the runway when the right brakes failed.

Narrative: Just prior to the FAF I had some light rain but could still see the runway. I continued the approach and could see it was slightly wet; I might have been maybe 5 KTS fast on the Vref and set it down well within the first 1;000 FT of the runway. When I landed speed brakes were deployed but when I started braking it didn't slow down so I kept applying more and more until I was hard on them and nothing was happening. By the time I realized I wasn't going to stop it was too late to go-around and I just kept applying full brakes. Just before we ran off the runway I steered it to the left to avoid the approach lights and came to a stop 390 FT from the end of the runway. I shut down the aircraft and let the passengers out. No harm came to the passengers and I managed to clear the runway lights causing no damage on the airport property. No apparent damage on the aircraft other than having gone down in the mud to the axle of the tires.I got back in; called Unicom and gave them my number so they could pick us up. The passengers seemed unaffected and just happy I didn't try a go-around. After we were back in the FBO one of the linemen said there were skid marks only on the left side main tire and nothing on the left side all along the runway. Pictures were taken for reference. A couple days later an aircraft recovery company took the aircraft off the mud; back on the taxiway and into the FBO. No physical damage was found so we decided to have Citation mobile unit take a look at the aircraft. The Chief Pilot told me all they found were the right brakes broken. Just relieved no harm came to the passenger and no property or aircraft damage was caused.

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.