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NTSB Report
December 7, 1990 · Cessna 150E · N3956U
Amarillo, TX
Overview
Report Status
Probable Cause
Event Type
Accident
Date
December 7, 1990
Injury Outcomes
1 injury (1 serious injury), 1 uninjured
Location
Amarillo, TX
Aircraft
Cessna 150E
Tail Number
N3956U
Operator
Conley Charles
Injuries
Serious
Aircraft Damage
Destroyed
NTSB Number
FTW91LA021
DURING DEPARTURE FROM AN UNIMPROVED 1,800-FT GRASS AIRSTRIP, IN A HIGH GROSS WEIGHT AIRPLANE, THE LEFT WING CONTACTED THE GROUND AND THE AIRPLANE CARTWHEELED. THE PILOT WAS MAKING A LEFT TURN TO AVOID ELECTRICAL TRANSMISSION LINES AT THE DEPARTURE END. THE AIRPLANE HAD JUST COMPLETED AN ANNUAL INSPECTION. BOTH MAGNETOS HAD BEEN INCORRECTLY SET TO 16 DEG BEFORE TOP DEAD CENTER. ACCORDING TO THE ENGINE MANUFACTURER THIS SETTING WOULD RESULT IN A POWER LOSS OF APRX 30%.
NTSB Probable Cause
AN UNDERPOWERED TAKEOFF ATTEMPT DUE TO INCORRECTLY SET MAGNETOS. CONTRIBUTING WAS THE TRANSMISSION LINES.
Full Narrative
DURING DEPARTURE FROM AN UNIMPROVED 1,800-FT GRASS AIRSTRIP, IN A HIGH GROSS WEIGHT AIRPLANE, THE LEFT WING CONTACTED THE GROUND AND THE AIRPLANE CARTWHEELED. THE PILOT WAS MAKING A LEFT TURN TO AVOID ELECTRICAL TRANSMISSION LINES AT THE DEPARTURE END. THE AIRPLANE HAD JUST COMPLETED AN ANNUAL INSPECTION. BOTH MAGNETOS HAD BEEN INCORRECTLY SET TO 16 DEG BEFORE TOP DEAD CENTER. ACCORDING TO THE ENGINE MANUFACTURER THIS SETTING WOULD RESULT IN A POWER LOSS OF APRX 30%.
Flight
Event TypeAccident
Event Time16:05 CST
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 150E
Tail NumberN3956U
Aircraft CategoryAir
DamageDestroyed
OperatorConley Charles
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · O-200-A · Reciprocating · 100
Seats2
People & Injuries
Injury Summary1 injury (1 serious injury), 1 uninjured
Fatal0
Serious1
Minor0
Uninjured1
Total2
Crew 1Age 32 · Third Class
Conditions
ConditionsVMC
LightDusk
Wind320° @ 5 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point52 / 12 C
Altimeter0
Observation Time22:52
Weather SourceWFAC