ANC96TA016

NTSB accident investigation · Cessna 182H · Koyuk, AK · November 28, 1995

Accident · No injuriesFinal report
Date
November 28, 1995, 15:00 local (19:00 UTC)
Place
Koyuk, AK
Injuries
1 uninjured
Damage
Destroyed
Phase of flight
Approach
Aircraft
N1997XCessna 182H
Weather
Visual (VMC) · Day
Status
Completed · report April 18, 1996
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19951128039089A
Case key
2918

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 delayed application of carburetor heat. Factors in the accident were carburetor icing conditions and lack of suitable terrain for a forced landing.

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 engine power(partial) - nonmechanicalApproach - vfr pattern - base leg/base to final
Weather condition - carburetor icing conditionsFactor
Carburetor heat - delayedPilot in commandCause
Fuel system,carburetor - ice
Forced landingEmergency landing
On ground/water collision with objectEmergency landing
Airport facilities,runway/landing area condition - none suitableFactor
Object - aircraft parked/standing
Object - fence post

Analysis

The certificated airline transport pilot reported that he planned a flight to a remote village to conduct a census survey if the weather permitted. While en route, the pilot experienced clear icing conditions and freezing rain at 6,500 feet mean sea level (MSL). He climbed above the conditions to 8,500 feet msl. A layer of stratus clouds initially obscured the village but after passing the village, he noticed that the runway was visible and then made a rapid, low power descent for landing. The airplane entered a left base for landing and the pilot applied carburetor heat about 500 feet above the ground. The engine suddenly lost 80 to 100 percent of power. The pilot performed an emergency landing on an airport access road that paralleled the runway, but was unable to stop the airplane before it collided with a wooden post and a parked airplane. The pilot reported that the cloud cover was consistent with a narrow temperature/dew point spread.

Factual narrative

On November 28, 1995, about 1500 Alaska standard time, a wheel equipped Cessna 182H, N1997X, collided with a parked airplane during a forced landing at Koyuk, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country government flight when the accident occurred. The airplane, registered to the pilot and operated on official business by the U.S. Bureau of the Census, was destroyed. The certificated airline transport pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed. The flight originated at the Galena airport, Galena, Alaska at 1410.

The pilot reported that he planned a flight to Nome, Alaska, and a landing at Koyuk to conduct a census survey if the weather permitted. While en route, the pilot experienced clear icing conditions and freezing rain at 6,500 feet mean sea level (MSL). He climbed above the conditions to 8,500 feet msl. Due to a low layer of stratus clouds, the pilot initially overflew Koyuk but noticed that the runway was visible. He then made a rapid, low power descent for landing on runway 36. The pilot entered a left base for landing and applied carburetor heat about 500 feet above the ground. The engine suddenly lost 80 to 100 percent of power. The pilot performed an emergency landing on the airport access road that paralleled runway 36, but was unable to stop the airplane before it collided with a wooden post and a parked Piper PA-18 airplane, N2719M.

At 1415, an automated weather observation station (AWOS) located at Koyuk was reporting in part: Sky condition and ceiling, measured 600 feet overcast; visibility, 10 miles; temperature, 11 degrees F; dew point temperature, -11 degrees F; wind, 070 degrees at 3 knots; altimeter, 30.09 inHg. The pilot reported that Nome was reporting a temperature of 18 degrees F, with a dew point of 16 degrees F, and the cloud cover was consistent with a narrow temperature/dew point spread.

Aircraft

Registration
N1997X
Reported as
Cessna 182H
Category
Airplane
Serial number
18256097
Airframe hours
5,565
Engine
Continental O-470-R, 230 horsepower, reciprocating
Damage
Destroyed
Flight
Public aircraft · Part 91
Operator
U.S. Bureau Of The Census
Registered owner
John W. Dailey
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 10, 1995 · 200 hours before
Departed
GAL · Galena, AK
Destination
KKA
Airport
KKA · Koyuk

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
43
Certificates
Flight engineer, Airline transport
Airplane ratings
Single-engine sea, Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
12,000 total · 5,000 in this make and model · 11,500 as pilot in command · 75 in the last 90 days · 25 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
80° at 4 knots
Visibility
10 statute miles
Lowest ceiling
3,000 ft overcast
Temperature
10 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

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

Other investigations on N1997X · 2

Matched to the same aircraft by N-number and date.