NTSB Identification: MKC84FA010.
The docket is stored on NTSB microfiche number 25545.
Nonscheduled 14 CFR
Accident occurred Wednesday, October 26, 1983 in ST. LOUIS, MO
Aircraft: CONVAIR 340, registration: N30DR
Injuries: 2 Uninjured.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

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.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ENGINE ASSEMBLY,MASTER ROD..FAILURE,TOTAL

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

EMERGENCY PROCEDURE..IMPROPER..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

WRONG ENGINE SHUTDOWN..INADVERTENT..PILOT IN COMMAND



Contributing Factors

OBJECT..APPROACH LIGHT/NAVAID


Contributing Factors

TERRAIN CONDITION..DITCH


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