What was found
NR 6 EXHAUST PUSHROD BENT, BROKEN AND WORN HALFWAY THRU FROM RUBBING ON INSIDE OF THE PUSHROD HOUSING. NR 6 INTAKE PUSHROD BROKEN IN TWO. CYL HAS 190 HRS SINCE NEW AND BOTH VALVES MOVED FREELY IN GUIDES. NR 6 CONNECTING ROD FOUND VISIBLY BENT. INTAKE MANIFOLD DRAINS DID NOT DRAIN WHEN TESTED. POSSIBLE CAUSE, HYD LOCK, TCM SB96-11. NR 6 CYL ON THIS INSTALL (RT ENG OF BEECH BARON) IS FRONT INBD CYL. CANT OF ENG WOULD MAKE THIS A LOW SPOT IN INTAKE WHERE FUEL WOULD ACCUMULATE. WITH FUEL DRAIN INOP, IT WOULD NOT DRAIN OUT. RECOMMENDATION IS TO INCLUDE A TEST OF MANIFOLD DRAINS AT 100-HR ANNUAL INSPECTION. (X)