FTW00LA006

NTSB accident investigation · WSK PZL Mielec M18 · Weldon, AR · October 5, 1999

Accident · FatalLimited investigationFinal report
Date
October 5, 1999, 18:20 local (23:20 UTC)
Place
Weldon, AR
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Unknown
Aircraft
N4779GWSK PZL Mielec M18
Weather
Visual (VMC) · Day
Status
Completed · report January 18, 2001
Report
Approved by Office Director
FAA report
19991005046309A
Case key
47510

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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Probable cause

The cause of the accident was undetermined.

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.

In flight collision with terrain/waterUnknown
Reason for occurrence undeterminedCause
Impairment(alcohol)Pilot in command

Analysis

The agricultural airplane was last seen spraying a field at 1600 on the day of the accident. The wreckage of the airplane was located at 1820 in a field located 1/2 mile north of the field where the airplane was seen spraying. According to a report by the local authorities, a beer can was found 'crushed between [the pilot's] lap and face.' Toxicological testing detected 159 mg/dL (0.159%) ethanol in blood and 178 mg/dL (0.178 %) ethanol in vitreous.

Factual narrative

On October 5, 1999, between the hours of 1600 and 1820 central daylight time, a WSK-PZL-MIELEC M18, agricultural airplane, N4779G, was destroyed when it impacted terrain near Weldon, Arkansas. The commercial pilot, sole occupant of the airplane, sustained fatal injuries. The airplane was registered to a private individual and operated by Hess Flying Service, Inc., of Wynne, Arkansas. Visual meteorological conditions prevailed for the 14 Code of Federal Regulations Part 137 aerial application flight. The local flight originated from the operator's private grass airstrip near Wynne, at an undetermined time.

According to the operator and witnesses, the pilot was applying "spodnam" to a bean field. The airplane was observed maneuvering in and around the field at 1300, 1515, and 1600. Approximately 1820, a farmer found the wreckage of the airplane in a rice field located 1/2 mile north of the field where the airplane was seen maneuvering.

According to the FAA inspector, who examined the airplane at the site, the left wing separated from the airframe, and the flight control cables for the left wing remained attached to the airframe. The right wing remained attached to the airframe. He added that the 960-horsepower radial engine separated from the airframe and came to rest 10 feet from the main wreckage. A review of the airframe and engine logbooks did not reveal evidence of any uncorrected maintenance discrepancies.

According to a report by the Jackson County Sheriff's Office, a beer can was found "crushed between [the pilot's] lap and face." The Arkansas State Crime Laboratory, Little Rock, Arkansas, performed an autopsy and reported that the pilot died of "multiple injuries with the contributory factors of acute alcoholism and hypertensive arteriosclerotic cardiovascular disease." Toxicological testing by the FAA Civil Aeromedical Institute, Oklahoma City, Oklahoma, detected 159 mg/dL (0.159%) ethanol in blood and 178 mg/dL (0.178%) ethanol in vitreous.

Aircraft

Registration
N4779G
Reported as
WSK PZL Mielec M18
Category
Airplane
Serial number
1Z012-31
Airframe hours
3,500
Engine
Pzl-Kalisz PZL621KAA, 300 horsepower, reciprocating
Damage
Destroyed
Flight
Aerial application · Part 137
Registered owner
William P. Hess
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · February 15, 1999 · 300 hours before
Departed
NONE · Wynne, AR

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
56
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Toxicology
Performed
Flight hours
10,963 total · 4,131 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
41 °F, dew point 37 °F
Altimeter
30.00 inHg
Observed at
LIT, 35 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.