DEN85FA202

NTSB accident investigation · Cessna 172RG · Wilsall, MT · July 29, 1985

Accident · FatalField investigationFinal report
Date
July 29, 1985, 10:10 local (16:10 UTC)
Place
Wilsall, MT
Injuries
1 fatal, 1 serious
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N6156RCessna 172RG
Weather
Instrument (IMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19850729034599A
Case key
16549

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.

In flight encounter with weatherCruise - normal
Weather condition - low ceiling
Preflight briefing service - performedPilot in command
Weather condition - obscuration
Preflight planning/preparation - poorPilot in commandCause
Weather condition - rain
Flight into known adverse weather - initiatedPilot in commandCause
Weather condition - fog
In-flight planning/decision - poorPilot in command
Notams - disregardedPilot in command
Weather evaluation - misjudgedPilot in command
Vfr flight into imc - continuedPilot in commandCause
In flight collision with objectManeuvering - turn to reverse direction
Object - tree(s)
Altitude - inadequatePilot in command
Remedial action - delayedPilot in command
Loss of control - in flightDescent - uncontrolled
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - mountainous/hilly

Analysis

The plt obtained a wx briefing that forecast IMC. He filed a VFR flt plan and departed polson, Montana at 0830 en route to powell, Wyoming. The plt said he encountered low ceilings, low visibilities, and drizzle just past helena, Montana but he continued. The plt said when he thought he could go no further he slowed the acft and started a left turn. The acft collided with trees and crashed into the ground at about 1010.

Aircraft

Registration
N6156R
Reported as
Cessna 172RG
Category
Airplane
Serial number
172RG0097
Airframe hours
1,326
Engine
Lycoming O-360-FIA6, 180 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Theron R. Waln
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 17, 1984 · 32 hours before
Departed
8S1 · Polson, MT
Destination
POY · Powell, WY
Flight plan
VFR
Airport
9U1 · Wilsall

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
57
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
425 total · 53 in this make and model · 364 as pilot in command · 3 in the last 90 days

Weather

Conditions
Instrument (IMC) · Day
Visibility
30 statute miles
Lowest ceiling
50 ft overcast

FAA reports on this event · 1

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