What was found
AIRCRAFT WAS DEPARTING AFTER ANNUAL AND AIRSPEED WAS NOT SEEN AND TAKEOFF WAS ABORTED AFTER VERY HEAVY BRAKING AND RUNNING OFF THE END OF THE RUNWAY THE LEFT TIRE BLEW AND THE RIGHT PROP STRUCK THE END OF RUNWAY LIGHTS CAUSING A PROP STRIKE AND ENGINE TEAR DOWN AND PROP OVERHAUL. INSPECTED THE PITOT SYSTEM AND FOUND THE RUBBER HOSE PIPER P/N 63913-106 BROKEN WHERE IT ATTACHES TO THE METAL LINE ON THE OUTBOARD END CAUSING LOSE OF AIR SPEED INDICATION. INSTALLED NEW HOSE AND TESTED SYSTEM.