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NTSB Report
August 23, 1991 · Cessna 150M · N704CP
Haskell, OK
Overview
Report Status
Probable Cause
Event Type
Accident
Date
August 23, 1991
Injury Outcomes
1 injury (1 minor injury)
Location
Haskell, OK
Aircraft
Cessna 150M
Tail Number
N704CP
Operator
Bryce D Willis
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
FTW91LA153
WHILE CRUSING AT 500 FEET AGL THE PILOT FELT A SLIGHT CHANGE IN PITCH DOWNWARDS TOWARD POWER LINES. HE MADE CONTACT WITH THE TOP GUY WIRE BETWEEN TWO HIGH TENSION POWER LINES. THE PILOT STATED HE FELT A BINDING IN THE ELEVATOR CONTROLS WHICH RESTRICTED ELEVATOR MOVEMENT MAKING IT IMPOSSIBLE TO CLEAR THE POWER LINES. ON-SITE INVESTIGATION REVEALED THE AVIONICS EQUIPMENT RACK ON THE INSTRUMENT PANEL HAD PARTIALLY COLLAPSED, RESTRICTING THE MOVEMENT OF THE ELEVATOR. THE AVIONICS EQUIPMENT RACK WAS FOUND TO BE IMPROPERLY INSTALLED. AFTER IMPACTING THE GUY WIRE (115 AGL), THE AIRPLANE TUMBLED END OVER END, CONTACTING FOUR OF THE SEVEN HIGH TENSION WIRES BEFORE IMPACTING THE GROUND.
NTSB Probable Cause
IMPROPER INSTALLATION OF AVIONICS EQUIPMENT RESULTING IN INTERFERENCE WITH FLIGHT CONTROL.
Full Narrative
WHILE CRUSING AT 500 FEET AGL THE PILOT FELT A SLIGHT CHANGE IN PITCH DOWNWARDS TOWARD POWER LINES. HE MADE CONTACT WITH THE TOP GUY WIRE BETWEEN TWO HIGH TENSION POWER LINES. THE PILOT STATED HE FELT A BINDING IN THE ELEVATOR CONTROLS WHICH RESTRICTED ELEVATOR MOVEMENT MAKING IT IMPOSSIBLE TO CLEAR THE POWER LINES. ON-SITE INVESTIGATION REVEALED THE AVIONICS EQUIPMENT RACK ON THE INSTRUMENT PANEL HAD PARTIALLY COLLAPSED, RESTRICTING THE MOVEMENT OF THE ELEVATOR. THE AVIONICS EQUIPMENT RACK WAS FOUND TO BE IMPROPERLY INSTALLED. AFTER IMPACTING THE GUY WIRE (115 AGL), THE AIRPLANE TUMBLED END OVER END, CONTACTING FOUR OF THE SEVEN HIGH TENSION WIRES BEFORE IMPACTING THE GROUND.
Flight
Event TypeAccident
Event Time11:55 CDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireUnknown
Aircraft ExplosionUnknown
Aircraft
AircraftCessna 150M
Tail NumberN704CP
Aircraft CategoryAir
DamageSubstantial
OperatorBryce D Willis
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · O-200-A · Reciprocating · 100
Seats2
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 61 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind180° @ 4 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourceWIT