ANC96LA110

NTSB accident investigation · Cessna 180 · Mc Carthy, AK · July 30, 1996

Accident · No injuriesLimited investigationFinal report
Date
July 30, 1996, 13:30 local (21:30 UTC)
Place
Mc Carthy, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N1746CCessna 180
Weather
Instrument (IMC) · Day
Status
Completed · report February 18, 1997
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19960730022769A
Case key
2866

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

The pilot's inadequate weather evaluation, and his inadvertent flight into instrument meteorological conditions.

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
Weather condition - clouds
Weather evaluation - inadequatePilot in commandCause
Vfr flight into imc - inadvertentPilot in commandCause
Main gear collapsedEmergency landing
Terrain condition - rough/uneven
Landing gear,main gear - overload

Analysis

The air taxi pilot related he was flying a company airplane on a personal flight in a mountain pass when the weather began to deteriorate. This was the pilot's third flight of the day in the same pass. He said he turned the airplane around in an attempt to exit the pass, but the clouds had lowered and he could no longer see the exit to the pass. He elected to make a precautionary landing on the tundra in lieu of attempting to continue the flight through the pass. The main landing gear separated from the airplane during the landing.

Factual narrative

On July 30, 1996, about 1330 Alaska daylight time, a wheel equipped Cessna 180 airplane, N1746C, sustained substantial damage during an off airport precautionary landing. The precautionary landing occurred in the north end of the Chitistone Pass, located about 25 miles northeast of Mc Carthy, Alaska. The accident site elevation was approximately 5,600 feet. The solo commercial certificated pilot was not injured. The 14 CFR Part 91 flight operated in instrument meteorological conditions. A company flight plan was in effect at the time of the accident.

During a telephone conversation with the NTSB investigator-in-charge (IIC) on August 1, the air taxi pilot related that the accident flight was his third flight of the day through the Chitistone Pass. He said on the accident flight, he was flying a company airplane for personal use. He said as he flew through the pass, the weather conditions were "marginal VFR", and continued to deteriorate as he flew northward. As he neared the north end of the pass, he realized he could not see the valley beyond the end of the pass. He said he turned the airplane around and tried to fly to the south, but the weather had closed in all around. He made "a quick decision" to perform a precautionary landing on the tundra. The airplane's main landing gear was torn from the fuselage during the landing.

Aircraft

Registration
N1746C
Reported as
Cessna 180
Category
Airplane
Serial number
30446
Airframe hours
5,400
Engine
Continental O-470, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Michael P. Mc Carthy
Airworthiness certificate
Standard, Normal; Standard, Utility
Last inspection
100 hour · June 15, 1996 · 70 hours before
Destination
White River, AK
Flight plan
Company VFR

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
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
8,000 total · 3,500 in this make and model · 8,000 as pilot in command · 100 in the last 90 days · 70 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Wind
0° at 13 knots
Temperature
39 °F

FAA reports on this event · 1

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