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NTSB Report
October 8, 1989 · Cessna 120 · N1829N
Maysville, KY
Overview
Report Status
Probable Cause
Event Type
Accident
Date
October 8, 1989
Injury Outcomes
1 injury (1 minor injury)
Location
Maysville, KY
Aircraft
Cessna 120
Tail Number
N1829N
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
ATL90LA005
ENGINE LOST POWER WHEN ALL OIL WAS LOST FROM ENGINE IN FLIGHT THROUGH HOLE IN ROCKER BOX COVER WHICH WAS RESULT OF 5 OF 6 SECURING SCREWS BEING MISSING AND COVER VIBRATING AGAINST ROCK ARM. AIRCRAFT COLLIDED WITH POWERLINES DURING SUBSEQUENT FORCED LANDING. PLT/OWNER STATED HE HAD INSPECTED ALL NUTS AND BOLTS 16 FLIGHT HOURS BEFORE ACCIDENT.
NTSB Probable Cause
THE IMPROPER INSPECTION OF THE AIRPLANES ENGINE BY THE PILOT/OWNER RESULTING IN FIVE ROCKER BOX COVER SCREWS BEING MISSING AND SUBSEQUENT LOSS OF ENGINE OIL DUE TO THE COVER VIBRATING AND CAUSING A HOLE TO BE WORN IN IT. SUBSEQUENT LOSS OF ENGINE POWER DUE TO LOSS OF ENGINE OIL RESULTED IN A FORCE LANDING AT WHICH TIME THE AIRPLANE COLLIDED WITH POWER LINES.
Full Narrative
ENGINE LOST POWER WHEN ALL OIL WAS LOST FROM ENGINE IN FLIGHT THROUGH HOLE IN ROCKER BOX COVER WHICH WAS RESULT OF 5 OF 6 SECURING SCREWS BEING MISSING AND COVER VIBRATING AGAINST ROCK ARM. AIRCRAFT COLLIDED WITH POWERLINES DURING SUBSEQUENT FORCED LANDING. PLT/OWNER STATED HE HAD INSPECTED ALL NUTS AND BOLTS 16 FLIGHT HOURS BEFORE ACCIDENT.
Flight
Event TypeAccident
Event Time16:30 EDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 120
Tail NumberN1829N
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · O-200 · Reciprocating · 100
Seats2
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 41 · Second Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility5 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourcePILO