DEN88FA071

NTSB accident investigation · Cessna 172M · Red Lodge, MT · February 7, 1988

Accident · FatalField investigationFinal report
Date
February 7, 1988, 16:24 local (23:24 UTC)
Place
Red Lodge, MT
Injuries
3 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N20484Cessna 172M
Weather
Instrument (IMC) · Day
Status
Completed · report April 25, 1989
Report
Approved by Office Director
FAA report
19880207029039A
Case key
17353

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
Preflight planning/preparation - poorPilot in commandFactor
Flight into known adverse weather - initiatedPilot in commandCause
Weather condition - low ceilingFactor
Vfr flight into imc - attemptedPilot in commandCause
Weather condition - snowFactor
Weather condition - turbulenceFactor
In flight collision with terrain/waterCruise - normal
Terrain condition - mountainous/hillyFactor

Analysis

The plt and two pax were returning to twin falls, id from billings, MT. The plt rec two wx briefings prior to dep. The wx forecast indicated low clouds, snow, turb and icing cond along the intended route of flight. The route of flight required the plt to traverse high mtn terrain. The plt radioed he was encountering clouds near the mtns. The acc site elev was 10,000 ft. there was no evidence of a mech malfunction or failure of the acft structure, flt controls, eng or prop. The fss had forecast the mountains to be obscured by clouds and the wx to include snow and turbulence.

Aircraft

Registration
N20484
Reported as
Cessna 172M
Category
Airplane
Serial number
17261327
Airframe hours
3,402
Engine
Lycoming O-320-E2D, 150 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Rim To Rim Flyers Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · December 18, 1987 · 53 hours before
Departed
BIL · Billings, MT
Destination
TWF · Twin Falls, ID

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
32
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Toxicology
Performed
Flight hours
152 total · 87 in this make and model

Weather

Conditions
Instrument (IMC) · Day
Wind
250° at 15 knots
Visibility
5 statute miles
Lowest ceiling
2,500 ft broken
Temperature
36 °F
Altimeter
29.00 inHg
Observed at
BIL, 65 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.