As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT LOST POWER ON TAKEOFF ROLL (ENGINE WENT TO AMBIENT M.P.) 29 INCHES INSTEAD OF 42 INCHES HG FOR TAKEOFF. INSPECTION REVEALED EXHAUST GASKET BETWEEN NR 1 AND NR 3 HAD BROKEN INTO 3 PIECES, 2 PIECES FOUND IN RIGHT TURBO JAMMING TURBINE WHEEL. EXHAUST CLAMP WAS STILL IN PLACE AND SAFETIED, BUT VERY LOOSE (GASKET MISSING). EXCESSIVE EXHAUST LEAK ALSO. (BOTH TURBOS REPLACED).