DEN83FA156

NTSB accident investigation · Piper PA-18-150 · Wheatland, WY · July 2, 1983

Accident · FatalField investigationFinal report
Date
July 2, 1983, 13:36 local (19:36 UTC)
Place
Wheatland, WY
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N6850ZPiper PA-18-150
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19830702027819A
Case key
15995

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 flightManeuvering - aerial application
Weather condition - high density altitudeFactor
Weather condition - unfavorable windFactor
Weather condition - gustsFactor
Airspeed - not maintainedPilot in commandCause
Overconfidence in personal abilityPilot in commandCause
Inadequate initial trainingPilot in commandCause
Lack of total experience in type operationPilot in commandCause
Physical impairment(visual deficiency)Pilot in commandCause
Procedures/directives - not followedPilot in commandFactor
Weather condition - high density altitudeFactor
Weather condition - unfavorable windFactor
Weather condition - gustsFactor
Airspeed - not maintainedPilot in commandCause
Inadequate trainingPilot in commandFactor
Inadeq certification/approval,operation/operatorCompany/operator mgmt
Overconfidence in personal abilityPilot in commandFactor
Stall/spin - inadvertentPilot in commandCause
Load jettison - not performedPilot in command
In flight collision with terrain/waterDescent - uncontrolled

Analysis

During an aerial application maneuver, the acft collided with the ground. An exam of the wreckage indicated that it impacted in a steep nose down attitude while rotating to the left. The flaps were found extended 25 deg & the airspeed gage was found indicating 55 KTS. The t-handle for dumping the chemical load was found in the stowed position & had not been activated. The fuel selector was positioned to the right fuel tank & both fuel tanks were found with fuel remaining. Flt control continuity was established & the throttle was found in the full forward position. Neither the plt nor the owner possessed a certificate to conduct aerial applications. Also, there was no record that the plt had obtained knowledge & skill test, required by 14 CFR 137. The plt had been issued a 2nd class medical certificate on 10/23/79 with a limitation to wear corrective lenses. However, no glasses or contact lenses were found. The density alt was approx 7200 ft. reportedly, the winds were strong & gusty.

Aircraft

Registration
N6850Z
Reported as
Piper PA-18-150
Category
Airplane
Serial number
18-81-33
Airframe hours
2,332
Engine
Lycoming O-320-A2B, 150 horsepower, reciprocating
Damage
Destroyed
Flight
Aerial application · Part 137
Registered owner
Ashen Hurst Hal L.
Airworthiness certificate
Standard, Utility
Last inspection
Annual · June 3, 1983 · 22 hours before

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
39
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Expired
Seat
Front
Toxicology
Performed
Flight hours
597 total · 72 in this make and model · 447 as pilot in command · 19 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
240° at 11 knots
Visibility
60 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point -0 °F
Observed at
CYS, 45 nm away

FAA reports on this event · 1

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