CHI89FA049

NTSB accident investigation · Cessna 172RG · Mosinee, WI · February 8, 1989

Accident · FatalField investigationFinal report
Date
February 7, 1989, 18:20 local (Feb 8, 1989, 00:20 UTC)
Place
Mosinee, WI
Injuries
3 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N6525VCessna 172RG
Weather
Instrument (IMC) · Night/dark
Status
Completed · report September 30, 1991
Report
Approved by Office Director
FAA report
19890207001809A
Case key
14244

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

Spatial disorientation of the pilot as a result of initiating the flight into known adverse weather. Factors related to the accident were: dark night, snow, and low ceilings.

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 - normal
Light condition - dark nightFactor
Weather condition - low ceilingFactor
Weather condition - snowFactor
Flight into known adverse weather - initiatedPilot in commandCause
Loss of control - in flightCruise - normal
Aircraft control - uncontrolledPilot in commandCause
Spatial disorientationPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

Non instrument rated pilot got a full weather brief from flight service station. Weather briefer advised pilot that VFR flight was not recommended, and gave him hazardous weather advisories in effect for the area at the time. Aircraft crashed in densely wooded area approximately 10 miles south of departure point. Airport manager described the conditions at the time of departure as 'dark, windy, and snowing...'.

Aircraft

Registration
N6525V
Reported as
Cessna 172RG
Category
Airplane
Serial number
172RG0751
Airframe hours
1,828
Engine
Lycoming O-360-F1A6, 180 horsepower, reciprocating
Damage
Destroyed
Flight
Part 91
Operator
Andrew & Mary Aviation, Inc.
Registered owner
Andrew & Mary Aviation Inc
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · December 30, 1988 · 44 hours before
Departed
AUW · Wausau, WI
Destination
1C5 · Plainfield, IL

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
28
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
249 total · 33 in this make and model · 179 as pilot in command · 21 in the last 90 days · 15 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Night/dark
Wind
230° at 10 knots
Visibility
1 statute miles
Lowest ceiling
500 ft
Temperature
19 °F, dew point 14 °F
Altimeter
29.00 inHg
Observed at
AUW, 15 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.