Narrative:

After completing all pretaxi checks, engines started. Hydraulic pressure in the appropriate range, 3000 psi. I started to taxi and make the hard right turn required to avoid the aircraft (mdt parked in front of me) and taxi to the runway. The turn required not only full nose wheel tiller deflection, but also right brake. So, as soon as I started taxiing, I stepped on the right brake and steered to the right. No braking was available from the right brake, so I pressed harder. Still no response from the right brake. I then tried to put the propellers in reverse while applying both brakes hard and steering all the way to th right with the tiller. I was unable to put the propellers in reverse while holding the tiller and the brakes because of the reverse gate. Next the first officer applied his brakes fully in an effort to stop the aircraft. With still no response I applied the parking brake. Shortly after that, the aircraft struck the mdt tail. The light transport's left wing struck mid-length to the mid-section of the mdt tail. No injuries were reported from the 10 passenger on the light transport or the 18 passenger on the mdt. The time frame from start of taxi to impact was 3-5 seconds. I shut the engines down and let the people know (via passenger announcement) that there was no serious problem and the people were deplaned normally. The aircraft should not have been parked so close together that I needed the brakes to avoid the mdt. The difficulty of the reverse guard prevented me from being able to select reverse and possible prevent or limit. Naturally if the braked worked, I would have been able to avoid the whole thing.

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Original NASA ASRS Text

Title: COMMUTER-LTT HIT ACR-MDT AS THE ACFT WAS TAXIING AWAY FROM THE GATE.

Narrative: AFTER COMPLETING ALL PRETAXI CHKS, ENGS STARTED. HYD PRESSURE IN THE APPROPRIATE RANGE, 3000 PSI. I STARTED TO TAXI AND MAKE THE HARD RIGHT TURN REQUIRED TO AVOID THE ACFT (MDT PARKED IN FRONT OF ME) AND TAXI TO THE RWY. THE TURN REQUIRED NOT ONLY FULL NOSE WHEEL TILLER DEFLECTION, BUT ALSO RIGHT BRAKE. SO, AS SOON AS I STARTED TAXIING, I STEPPED ON THE RIGHT BRAKE AND STEERED TO THE RIGHT. NO BRAKING WAS AVAILABLE FROM THE RIGHT BRAKE, SO I PRESSED HARDER. STILL NO RESPONSE FROM THE RIGHT BRAKE. I THEN TRIED TO PUT THE PROPS IN REVERSE WHILE APPLYING BOTH BRAKES HARD AND STEERING ALL THE WAY TO TH RIGHT WITH THE TILLER. I WAS UNABLE TO PUT THE PROPS IN REVERSE WHILE HOLDING THE TILLER AND THE BRAKES BECAUSE OF THE REVERSE GATE. NEXT THE F/O APPLIED HIS BRAKES FULLY IN AN EFFORT TO STOP THE ACFT. WITH STILL NO RESPONSE I APPLIED THE PARKING BRAKE. SHORTLY AFTER THAT, THE ACFT STRUCK THE MDT TAIL. THE LTT'S LEFT WING STRUCK MID-LENGTH TO THE MID-SECTION OF THE MDT TAIL. NO INJURIES WERE RPTED FROM THE 10 PAX ON THE LTT OR THE 18 PAX ON THE MDT. THE TIME FRAME FROM START OF TAXI TO IMPACT WAS 3-5 SECS. I SHUT THE ENGS DOWN AND LET THE PEOPLE KNOW (VIA PAX ANNOUNCEMENT) THAT THERE WAS NO SERIOUS PROB AND THE PEOPLE WERE DEPLANED NORMALLY. THE ACFT SHOULD NOT HAVE BEEN PARKED SO CLOSE TOGETHER THAT I NEEDED THE BRAKES TO AVOID THE MDT. THE DIFFICULTY OF THE REVERSE GUARD PREVENTED ME FROM BEING ABLE TO SELECT REVERSE AND POSSIBLE PREVENT OR LIMIT. NATURALLY IF THE BRAKED WORKED, I WOULD HAVE BEEN ABLE TO AVOID THE WHOLE THING.

Data retrieved from NASA's ASRS site as of August 2007 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.