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NTSB Report
July 28, 1991 · Beech C-23 · N7690R
Williamstown, MA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
July 28, 1991
Injury Outcomes
No injuries (1 uninjured)
Location
Williamstown, MA
Aircraft
Beech C-23
Tail Number
N7690R
Operator
David J Stoddard
Injuries
None
Aircraft Damage
Substantial
NTSB Number
NYC91LA191
A 200 HOUR PRIVATE PILOT EXPERIENCED A COMPLETE LOSS OF ENGINE POWER WHILE IN CRUISE FLIGHT AT 3,000 FEET. THE ENGINE FAILURE WAS THE RESULT OF THE CRANKSHAFT GEAR RETAINING BOLT BACKING OUT RESULTING IN THE DISENGAGEMENT OF THE CRANKSHAFT. THE ENGINE HAD RECENTLY BEEN OVERHAULED, BUT THE MANUFACTURER'S SERVICE INSTRUCTIONS WERE NOT COMPLIED WITH AT THE TIME OF THE ENGINE OVERHAUL. SUITABLE TERRAIN WAS NOT AVAILABLE TO THE PILOT TO EXECUTE A SUCCESSFUL FORCED LANDING.
NTSB Probable Cause
ENGINE FAILURE AS A RESULT OF IMPROPER ENGINE OVERHAUL PERFORMED BY OTHER MAINTENANCE PERSONNEL. A FACTOR WAS THE LACK OF SUITABLE TERRAIN.
Full Narrative
A 200 HOUR PRIVATE PILOT EXPERIENCED A COMPLETE LOSS OF ENGINE POWER WHILE IN CRUISE FLIGHT AT 3,000 FEET. THE ENGINE FAILURE WAS THE RESULT OF THE CRANKSHAFT GEAR RETAINING BOLT BACKING OUT RESULTING IN THE DISENGAGEMENT OF THE CRANKSHAFT. THE ENGINE HAD RECENTLY BEEN OVERHAULED, BUT THE MANUFACTURER'S SERVICE INSTRUCTIONS WERE NOT COMPLIED WITH AT THE TIME OF THE ENGINE OVERHAUL. SUITABLE TERRAIN WAS NOT AVAILABLE TO THE PILOT TO EXECUTE A SUCCESSFUL FORCED LANDING.
Flight
Event TypeAccident
Event Time15:50 EDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech C-23
Tail NumberN7690R
Aircraft CategoryAir
DamageSubstantial
OperatorDavid J Stoddard
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360-A2G · Reciprocating · 180
Seats4
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 50 · Third Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility20 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO