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NTSB Report
October 26, 1983 · Convair 340 · N30DR
St. Louis, MO
Overview
Report Status
Preliminary report
Event Type
Accident
Date
October 26, 1983
Injury Outcomes
No injuries (2 uninjured)
Location
St. Louis, MO
Aircraft
Convair 340
Tail Number
N30DR
Operator
Combs Airways
Injuries
None
Aircraft Damage
Substantial
NTSB Number
MKC84FA010
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.
Full Narrative
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.
Flight
Event TypeAccident
Event Time07:52 CDT
Nearest AirportLambert-St. Louis (0nm N)
Runway24
Runway Length7600 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireGrd
Aircraft ExplosionNo
Aircraft
AircraftConvair 340
Tail NumberN30DR
Aircraft CategoryAir
DamageSubstantial
OperatorCombs Airways
Operating RulePart 135
Engines2
Engine TypeReciprocating
Engine DetailsP&W · CB-16 · Reciprocating · 2400
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 42 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind250° @ 14 kt, gusting 26 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point43 C / 36 C
Altimeter30.00 inHg
Observation Time07:47
Weather SourceWFAC