FTW90FA062

NTSB accident investigation · Piper PA-32-300 · Coalgate, OK · February 1, 1990

Accident · FatalField investigationFinal report
Date
January 31, 1990, 20:29 local (Feb 1, 1990, 02:29 UTC)
Place
Coalgate, OK
Injuries
4 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N9235ZPiper PA-32-300
Weather
Instrument (IMC) · Night/dark
Status
Completed · report June 10, 1991
Report
Approved by Office Director
FAA report
19900131001439A
Case key
23008

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

Flight into known adverse weather conditions by the non-instrument rated pilot, and his subsequent spatial disorientation, which resulted in a loss of aircraft control. Factors related to the accident were: inoperative instrument panel lights, dark night, adverse weather conditions, unreliable flashlight, the pilot's visual perception, and his lack of instrument experience.

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 encounter with weatherCruise
Preflight briefing service - not usedPilot in commandFactor
Flight into known adverse weather - initiatedPilot in commandCause
Instrument light(s) - inoperativeFactor
Light condition - dark nightFactor
Weather condition - low ceilingFactor
Weather condition - fogFactor
Weather condition - rainFactor
Loss of control - in flightCruise
Flashlight - unreliableFactor
Aircraft control - not maintainedPilot in commandCause
Visual/aural perceptionPilot in commandFactor
Spatial disorientationPilot in commandCause
Lack of total instrument timePilot in commandFactor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The acft was 1 of 3 used in a political campaign in Oklahoma. After lndg at mcalester, the plt went with the campaign group while the otr 2 plts stayed at the arpt & checked the wx. After the group rtrnd, flt to the next stop (idabel) wascanceled due to bad wx. The non-inst rated plt elected to rtrn at ngt to ardmore, though he had said the inst panel lgtswere inop. He tried to obtain batteries for his flashlight at the arpt, but was unable. The plt of N9235Z did not get anfaa wx briefing. He asked 1 of the otr plts about the wx & was told it was bad at ardmore, but was better to the north &northwest. After takeoff, the acft flew nrly an hr bfr it crashed near Coalgate. A person, who heard the crash, said thevis was poor & the ngt was very dark; also, he said a storm occurred shortly after the plane flew over. Impact occurred in a steep, nose down, inverted attitude. No preimpact part failure or malfunction of the acft was fnd. The 2055 CST wx at ardmore was in part: 600' ovc, vis 7 mi with lgt rain & fog. The acft was fnd on a farm on 2/4/90 by the land owner.

Aircraft

Registration
N9235Z
Reported as
Piper PA-32-300
Category
Airplane
Serial number
32-40368
Airframe hours
1,985
Engine
Lycoming IO-540-K1A5, 300 horsepower, reciprocating
Damage
Destroyed
Flight
Part 91
Operator
Roy E. Stiner
Registered owner
Stiner, Roy E
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 30, 1990 · 2 hours before
Departed
MLC · Mcalester, OK
Destination
1F0 · Ardmore, OK
Airport
NONE

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
44
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Toxicology
Performed
Flight hours
607 total · 250 in this make and model · 524 as pilot in command

Weather

Conditions
Instrument (IMC) · Night/dark
Wind
130° at 12 knots
Lowest ceiling
600 ft overcast
Temperature
54 °F, dew point 48 °F
Altimeter
29.00 inHg
Observed at
ADM, 51 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.