FTW84FU007

NTSB accident investigation · Weedhopper B · Spencer, OK · June 10, 1984

Accident · Serious injuriesFinal report
Date
June 10, 1984, 18:30 local (23:30 UTC)
Place
Spencer, OK
Injuries
1 serious
Damage
Destroyed
Phase of flight
Landing
Aircraft
UNREGWeedhopper B
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Case key
21157

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

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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 flightLanding - flare/touchdown
Weather condition - unfavorable windFactor
Weather evaluation - inaccuratePilot in commandCause
Flt control syst,aileron control - lack of
Compensation for wind conditions - not possiblePilot in command
In flight collision with terrain/waterLanding - flare/touchdown
Terrain condition - ditchFactor

Analysis

The airman took off on a windy day and began to have difficulty controling his vehicle. This vehicle had a 34 ft soaring wing with no ailerons. The pilot decided to land and wait for better flying conditions. During the landing, a wing dropped and before the rudder could affect a recovery the wing tip hit an irrigation system. Examination of the wreckage failed to reveal any evidence of a preimpact mechanical failure.

Aircraft

Registration
UNREG
Reported as
Weedhopper B
Category
Ultralight, amateur-built
Serial number
463
Airframe hours
10
Engine
Chotia B, 25 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 103
Registered owner
Harvey Horton

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
49
Airplane ratings
Single-engine land
Medical
Unknown
Seat
Front

Weather

Conditions
Visual (VMC) · Day
Wind
130° at 13 knots
Visibility
12 statute miles
Lowest ceiling
25,000 ft broken
Temperature
81 °F, dew point 66 °F
Altimeter
29.00 inHg
Observed at
WPA, 10 nm away