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NTSB Report
May 11, 1992 · Ryan ST-3KR · N4223P
Anacortes, WA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
May 11, 1992
Injury Outcomes
1 injury (1 minor injury), 1 uninjured
Location
Anacortes, WA
Aircraft
Ryan ST-3KR
Tail Number
N4223P
Operator
Brewer Lee A
Injuries
Minor
Aircraft Damage
Destroyed
NTSB Number
SEA92LA095
THE PILOT WAS TURNING FROM TAKEOFF LEG TO CROSSWIND WHEN THE ENGINE QUIT. HE INITIATED A FORCED LANDING ON A STREET IN A RESIDENTIAL AREA. THE ACFT IMPACTED AN EMBANKMENT BESIDE THE STREET, SKIDDED ONTO THE STREET, GROUND LOOPED, AND WAS DESTROYED BY POST IMPACT FIRE. EXAM OF THE ENGINE REVEALED THE AFT CRANKSHAFT COUNTERWEIGHT AND NO. 5 CYLINDER SEPARATED IN FLIGHT. METALURGICAL EXAM OF THE CRANKSHAFT ASSY REVEALED FATIGUE FAILURE OF THE COUNTERWEIGHT CAP SCREWS.
NTSB Probable Cause
LOSS OF ENGINE POWER DUE TO FATIGUE FAILURE OF THE CRANKSHAFT COUNTERWEIGHT CAP SCREWS AND SEPARATION OF THE COUNTERWEIGHT. A FACTOR RELATING TO THE ACCIDENT WAS THE RESIDENTIAL AREA AND LACK OF SUITABLE TERRAIN FOR A FORCED LANDING.
Full Narrative
THE PILOT WAS TURNING FROM TAKEOFF LEG TO CROSSWIND WHEN THE ENGINE QUIT. HE INITIATED A FORCED LANDING ON A STREET IN A RESIDENTIAL AREA. THE ACFT IMPACTED AN EMBANKMENT BESIDE THE STREET, SKIDDED ONTO THE STREET, GROUND LOOPED, AND WAS DESTROYED BY POST IMPACT FIRE. EXAM OF THE ENGINE REVEALED THE AFT CRANKSHAFT COUNTERWEIGHT AND NO. 5 CYLINDER SEPARATED IN FLIGHT. METALURGICAL EXAM OF THE CRANKSHAFT ASSY REVEALED FATIGUE FAILURE OF THE COUNTERWEIGHT CAP SCREWS.
Flight
Event TypeAccident
Event Time15:20 PDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireGrd
Aircraft ExplosionNo
Aircraft
AircraftRyan ST-3KR
Tail NumberN4223P
Aircraft CategoryAir
DamageDestroyed
OperatorBrewer Lee A
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsKinner · R-55 · Reciprocating · 160
Seats2
People & Injuries
Injury Summary1 injury (1 minor injury), 1 uninjured
Fatal0
Serious0
Minor1
Uninjured1
Total2
Crew 1Age 68 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind270° @ 5 kt
Visibility7 sm
CeilingNone
Temperature / Dew Point57 / 34 C
Altimeter30.00 inHg
Observation Time21:55
Weather SourceWFAC