CHI00LA274

NTSB accident investigation · Widner Pietenpol Aircamper · Andover, MN · August 28, 2000

Accident · Minor injuriesLimited investigationFinal report
Date
August 27, 2000, 19:27 local (Aug 28, 2000, 00:27 UTC)
Place
Andover, MN
Injuries
1 minor
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N89JWWidner Pietenpol Aircamper
Weather
Visual (VMC) · Day
Status
Completed · report October 23, 2001
Report
Approved by Office Director
FAA report
20000827008489A
Case key
51073

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 trees and the unsuitable terrain for landing encountered during the forced landing. Factors were the side slip to avoid the trees initiated by the pilot, the fractured piston, and the cracked cylinder.

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) - mech failure/malfCruise
Engine assembly,cylinder - fracturedFactor
Engine assembly,cylinder - crackedFactor
Forced landingEmergency descent/landing
In flight collision with terrain/waterEmergency landing
Object - tree(s)Cause
Maneuver to avoid obstructions - initiatedPilot in commandFactor
Unsuitable terrain or takeoff/landing/taxi area - encounteredCause

Analysis

The airplane was destroyed during a forced landing after a loss of engine power while in cruise flight. The pilot said that, at about 2 hours into the flight, he, "...heard, or felt a single jolt or retort. The plane continued to function normally. A short time later it began to smell 'hot' in the cockpit. Gauges were normal... Almost immediately I noted my cylinder head temperature had climbed to 400 [degrees] F." The pilot said that he subsequently saw blue smoke from the left side of the engine and it began to run rough. The pilot attempted to land in a "weed" field. He said that during the landing he, "...was approaching the trees at the end of the field so I side slipped to the ground striking the [right] wing, then the nose and coming to rest facing the direction I came from." The pilot reported that subsequent to the accident, he found that the number 4 cylinder and piston were damaged. He found the cylinder cracked and the piston skirt broken. He reported the extent of the damage to the aircraft as "destroyed". The pilot reported no other anomalies.

Factual narrative

On August 27, 2000, at 1927 central daylight time, an amateur-built Widner Pietenpol Aircamper, N89JW, piloted by a private pilot, was destroyed during a forced landing, near Andover, Minnesota, following a loss of engine power while in cruise flight. The personal 14 CFR Part 91 flight was not on a flight plan. Visual meteorological conditions prevailed at the time of the accident. The pilot, who was the sole occupant, sustained minor injuries. The flight originated from Alexandria, Minnesota at 1720, and was en route to the Anoka County-Blaine Airport (ANE), Minneapolis, Minnesota.

In a written statement, the pilot said that, at about 2 hours into the flight, he, "...heard, or felt a single jolt or retort. The plane continued to function normally. A short time later it began to smell 'hot' in the cockpit. Gauges were normal... Almost immediately I noted my cylinder head temperature had climbed to 400 [degrees] F." The pilot said that he subsequently saw blue smoke from the left side of the engine and it began to run rough. The pilot attempted to land in a "weed" field about 10 miles northwest of ANE. He said that during the landing he, "...was approaching the trees at the end of the field so I side slipped to the ground striking the [right] wing, then the nose and coming to rest facing the direction I came from."

The pilot reported that subsequent to the accident, he found that the number 4 cylinder and piston were damaged. He found the cylinder cracked and the piston skirt broken. He reported the extent of the damage to the aircraft as "destroyed". The pilot reported no other anomalies.

Aircraft

Registration
N89JW
Reported as
Widner Pietenpol Aircamper (PIETENPOL)
Category
Airplane, amateur-built
Serial number
012
Engine
Chevrolet CORVAIR, 80 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Craig W. Amundson
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · September 20, 1999 · 49 hours before
Departed
AXN · Alexandria, MN
Destination
ANE · Minneapolis, MN

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
50
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Rear
Flight hours
251 total · 148 in this make and model · 191 as pilot in command · 34 in the last 90 days · 8 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
150° at 9 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
167 °F, dew point 149 °F
Altimeter
29.00 inHg
Observed at
ANE, 10 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.