MU-300 Diamond 1/1A
Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Instructor; Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 7.5; Flight Crew Total 16506; Flight Crew Type 6.5
Aircraft Equipment Problem Critical
Aircraft Aircraft Damaged; General Maintenance Action
Aircraft
After routine landing on Runway 11 I informed the Captain immediately; that I had no braking action.  The Captain assumed aircraft control and attempted braking from his side with the same result.  He then switched off the anti-skid and reattempted braking.  Still no brakes.  Captain then reached for the emergency brakes lever and was able to bring the aircraft to a complete stop on the runway.  Both main gear tire's were flat at the end of landing rollout.  Captain secured a tug and the aircraft was relocated to the hanger.
After landing the First Officer informed me that he had no braking action.  I told the First Officer that I had the aircraft and tried to apply brakes on my side.  I did not have braking action either.  I then began to apply the emergency brakes and brought the aircraft to a stop on the runway.  The tires on the aircraft went flat.  We secured a tug and dollies for the wheels and removed the aircraft from the runway.
An MU300 had normal brake failure during landing when the First Officer applied the brakes.  The Captain's brakes are also inoperative and the aircraft was brought to a stop using the emergency brakes resulting in two flat tires.