ST. LOUIS, MO, USA
N30DR
CONVAIR 340
WHILE IN A CLIMB AFTER TAKEOFF, THE AIRCREW ENCOUNTERED AN ENG PROBLEM (WHICH WAS REPORTED AS DETONATION) & REQUESTED CLEARANCE TO RETURN TO THE DEPARTURE ARPT. THE FLT WAS VECTORED FOR A RIGHT TRAFFIC PATTERN TO RWY 24. THE PLT REPORTED HE WAS AT 2000 FT MSL & HAD FEATHERED THE #1 ENG AS HE TURNED ONTO BASE LEG. GROUND WITNESSES OBSERVED SMOKE TRAILING THE ACFT AS IT TURNED FROM BASE TO FINAL APCH. REPORTEDLY, THE #2 ENG LOST ALL POWER & THE AIRCREW WERE UNABLE TO REACH THE RWY. THE ACFT LANDED HARD ON THE ARPT, BUT APRX 1350 FT SHORT OF THE RWY. AFTER TOUCHDOWN, THE RIGHT PROP BLADES SLASHED INTO THE GRASS TURF, THE LEFT WING HIT 4 APCH LIGHTS, THEN THE ACFT CROSSED A GULLY & SUBSEQUENTLY, THE RIGHT GEAR COLLAPSED. A TEARDOWN OF THE #2 ENG REVEALED THAT ITS MASTER ROD HAD FAILED. BOTH OF THE FRACTURE SURFACES WERE COMPLETELY SMEARED, REMOVING EVIDENCE OF THE FRACTURE ORIGIN. THE #1 ENG WAS REMOVED & MOUNTED ONANOTHER ACFT & OPERATED NORMALLY.
Source: NTSB Aviation Accident Database
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