FTW91LA153

NTSB accident investigation · Cessna 150M · Haskell, OK · August 23, 1991

Accident · Minor injuriesLimited investigationFinal report
Date
August 23, 1991, 11:55 local (16:55 UTC)
Place
Haskell, OK
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N704CPCessna 150M
Weather
Visual (VMC) · Day
Status
Completed · report March 31, 1993
Report
Approved by Office Director
FAA report
19910823036619A
Case key
23391

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

Improper installation of avionics equipment resulting in interference with flight control.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - in flightCruise
Flt control syst,yoke/control stick - blocked(partial)Cause
Maintenance,installation - improperOther maintenance personnelCause
Level off - not possiblePilot in command
In flight collision with objectDescent - uncontrolled
Object - guy wire
In flight collision with terrain/waterDescent - uncontrolled

Analysis

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.

Aircraft

Registration
N704CP
Reported as
Cessna 150M
Category
Airplane
Serial number
15078508
Engine
Continental O-200-A, 100 horsepower, reciprocating
Damage
Substantial damage
Fire
Unknown
Flight
Personal · Part 91
Operator
Bryce D. Willis
Registered owner
Bryce D. Willis

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
61
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Flight hours
2,560 total · 1,500 in this make and model · 2,100 as pilot in command · 9 in the last 90 days · 3 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
-0 °F, dew point -0 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.