CHI90FA185

NTSB accident investigation · Piper PA-28-140 · Grand Marais, MN · July 14, 1990

Accident · FatalField investigationFinal report
Date
July 14, 1990, 07:55 local (12:55 UTC)
Place
Grand Marais, MN
Injuries
3 fatal
Damage
Destroyed
Phase of flight
Unknown
Aircraft
N6146WPiper PA-28-140
Weather
Visual (VMC) · Day
Status
Completed · report May 18, 1992
Report
Approved by Office Director
FAA report
19900714025639A
Case key
14537

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

Poor judgement of the pilot due to his impairment from consumption of alcohol, and his failure to maintain control of the aircraft. A factor related to the accident was: pilot fatigue due to lack of sleep.

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 flightUnknown
Judgment - poorPilot in commandCause
Impairment(alcohol)Pilot in commandCause
Aircraft control - not maintainedPilot in commandCause
Fatigue(lack of sleep)Pilot in commandFactor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

Camping companions observed the plt & 2 passengers awake & drinking beer between 0200 & 0300 CDT. Another plt rprtd they were at the airport, preparing for a flt at about 0630 CDT. Subsequently, the plane crashed in a wooded area on hilly terrain. The wreckage was found at 1930 CDT on 7/15/90 by a helicopter search crew. There was evidence the acft had entered the trees while dscndg in a near 90 deg bank. No fuel was found in the tanks, but the acft was extensively damaged during impact. Also, no preimpact part failure or malfunction of the acft was verified. Toxicology checks of the plt's blood, vitreous fluid & urine showed alcohol levels of 0.068%, 0.1% & 0.13% (68, 100 & 130 mg/dl), respectively.

Aircraft

Registration
N6146W
Reported as
Piper PA-28-140
Category
Airplane
Serial number
2820165
Airframe hours
1,994
Engine
Lycoming O-320-E2A, 150 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Clarence A. Mcalpine
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 24, 1989 · 92 hours before
Departed
58Y · Silver Bay, MN

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
22
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Toxicology
Performed
Flight hours
220 total · 29 in this make and model · 179 as pilot in command · 45 in the last 90 days · 13 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
15 statute miles
Lowest ceiling
None
Temperature
63 °F, dew point 55 °F
Altimeter
30.00 inHg
Observed at
YQT, 60 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.