What was found
PHX - FLT 730 - ON TAKEOFF FOLLOWING A SHARP IMPACT ON FUSELAGE FROM RIGHT NOSE TIRE TREAD FAILURE, BOTH COMPASSES, FLIGHT DIRECTORS, AND ATTITUDE DIRECTOR INDICATORS FAILED. AFTER LANDING, REMOVED AND RE-ESTABLISHED POWER TO ATTITUDE AND HEADING REFERENCE SYSTEMS. ALIGNMENT OF BOTH SYSTEMS WAS NORMAL AND SYSTEMS OPERATIONAL CHECK WAS NORMAL. CHECK C-1D - 4-6-95 - MCI.