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NTSB Report
November 18, 1983 · Cessna 150K · N6054G
Oregon City, OR
Overview
Report Status
Preliminary report
Event Type
Accident
Date
November 18, 1983
Injury Outcomes
1 injury (1 minor injury)
Location
Oregon City, OR
Aircraft
Cessna 150K
Tail Number
N6054G
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
SEA84LA022
THE PLT, WHO WAS AN A & P MECHANIC, HAD JUST INSTALLED AN ENG THAT HAD BEEN OVERHAULED BY SOMEONE ELSE. HE REPORTED THAT THE PRETAKEOFF & RUN-UP CHECKS WERE NORMAL. AT APRX 250 TO 300 FT AGL, DURING TAKEOFF, THE ENG BEGAN TO SHAKE VIOLENTLY & LOST POWER. THE PLT RETARDED THE THROTTLE & INITIATED A 180 DEG TURN TO LAND IN AN OPEN FIELD. THE LEFT WING TIP CONTACTED THE GROUND DURING THE FORCED LANDING & THE NOSE & RIGHT MAIN GEAR COLLAPSED. AN EXAM & DISASSEMBLY OF THE ENG REVEALED THAT THE #1 CONNECTING ROD HAD COME LOSE & PUNCTURED THE ENG CASE. ONE OF THE BOLTS HAD FAILED & WAS NECKED DOWN AT THE FRACTURE. THE NUTS ON THE REMAINING ROD CAPS WERE FOUND TO BE FINGER TIGHT OR ONLY SLIGHTLY TORQUED. THE REQUIRED TORQUE WAS 40 FOOT POUNDS. THE ENG HAD OPERATED APPRX .1 HR SINCE MAJOR OVERHAUL.
Full Narrative
THE PLT, WHO WAS AN A & P MECHANIC, HAD JUST INSTALLED AN ENG THAT HAD BEEN OVERHAULED BY SOMEONE ELSE. HE REPORTED THAT THE PRETAKEOFF & RUN-UP CHECKS WERE NORMAL. AT APRX 250 TO 300 FT AGL, DURING TAKEOFF, THE ENG BEGAN TO SHAKE VIOLENTLY & LOST POWER. THE PLT RETARDED THE THROTTLE & INITIATED A 180 DEG TURN TO LAND IN AN OPEN FIELD. THE LEFT WING TIP CONTACTED THE GROUND DURING THE FORCED LANDING & THE NOSE & RIGHT MAIN GEAR COLLAPSED. AN EXAM & DISASSEMBLY OF THE ENG REVEALED THAT THE #1 CONNECTING ROD HAD COME LOSE & PUNCTURED THE ENG CASE. ONE OF THE BOLTS HAD FAILED & WAS NECKED DOWN AT THE FRACTURE. THE NUTS ON THE REMAINING ROD CAPS WERE FOUND TO BE FINGER TIGHT OR ONLY SLIGHTLY TORQUED. THE REQUIRED TORQUE WAS 40 FOOT POUNDS. THE ENG HAD OPERATED APPRX .1 HR SINCE MAJOR OVERHAUL.
Flight
Event TypeAccident
Event Time15:45 PST
Nearest AirportOregon City Airpark (0nm N)
Runway25
Runway Length2675 ft
Runway Width30 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 150K
Tail NumberN6054G
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-A2B · Reciprocating · 150
Seats2
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 40 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind250° @ 5 kt
Visibility40 sm
CeilingBroken clouds 5500 ft
Temperature / Dew Point54 / 43 C
Altimeter30.00 inHg
Observation Time23:00
Weather SourceWFAC