NYC97LA018

NTSB accident investigation · Dubis Team Minimax · North Adams, MA · November 16, 1996

Accident · No injuriesLimited investigationFinal report
Date
November 16, 1996, 14:10 local (19:10 UTC)
Place
North Adams, MA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N4335WDubis Team Minimax
Weather
Visual (VMC) · Day
Status
Completed · report August 21, 1997
Report
Approved by Office Director
FAA report
19961116035879A
Case key
39302

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

fuel contamination, which resulted in a loss of engine power. Factors relating to the accident were: the lack of a drain in the fuel system to properly check the fuel before flight, and the pilot's failure (or inability) to detect the contaminated fuel.

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(total) - nonmechanicalCruise
Fluid,fuel - contaminationCause
Fuel system,drain - not installedFactor
Acft/equip,inadequate aircraft componentOwner/builderFactor
Aircraft preflight - inadequateOwner/builderFactor
Forced landingEmergency descent/landing
In flight collision with terrain/waterEmergency landing
Object - tree(s)Factor

Analysis

The pilot reported that the engine lost total power while in cruise flight at 2100 feet, and he attempted a forced landing. According to the pilot, when he made his approach to a designated field, he realized that he had overshot it. He then saw another nearby field, and headed for it. As he approached, he tried to pass through a clearing in a tree line bordering the field. As the airplane went through the tree line, its left wing hit a tree, which spun the plane around. The plane then landed in the Hoosac River. Examination revealed that the fuel was dark in color and contained particles of an undetermined composition. There was no provision for sumping fuel to check for water or other contaminants.

Factual narrative

On November 16, 1996, at 1410 eastern standard time, a Dubis Minimax home-built airplane, N4335W, sustained substantial damage during a forced landing near Adams, Massachusetts. The certificated private pilot reported no injuries. Visual meteorological conditions prevailed at the time of the accident, no flight plan was filed. The personal flight was conducted under 14 CFR part 91 and originated at the North Adams Airport (2B6) at approximately 1345 with an intended destination of Pittsfield, Massachusetts (PSF).

The pilot reported to the Adams, Massachusetts Police Department that while in cruise flight at 2100 feet "...the engine quit, entirely." The pilot reported that he selected a field for landing. He said, "When I made my approach to that designated field, I realized that I had over shot it. I then saw another nearby clearing, and headed for it. As I approached this clearing, I tried to pass through a clearing in the treeline boundaring the field. As I went through the treeline, my left wing hit a tree, which had spun my plane around 180 degrees. [The plane] then landed in the Hoosac River."

A post accident inspection of the airplane was conducted by a Federal Aviation Administration Airworthiness Safety Inspector. The Inspector reported, "A check of the aircraft fuel system revealed contamination. The fuel was dark in color containing particles of unknown composition. There are no provisions for sumping fuel to check for water, or other contaminants. [The pilot/owner] stated that he uses dry gas to guard against water in the tank. The engine ignition wiring system was tested, along with a mechanical continuity check and was found operational. Post impact damage prevented an engine test run."

Aircraft

Registration
N4335W
Reported as
Dubis Team Minimax (TEAM MINIM)
Category
Airplane, amateur-built
Serial number
008
Airframe hours
38
Engine
Rotax 377, 35 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Donald F. Dubis
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Continuous airworthiness · November 16, 1996
Departed
2B6 · MA
Destination
PSF · Pittsfield, MA

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
63
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
149 total · 13 in this make and model · 9 in the last 90 days · 4 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
0° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
61 °F, dew point 39 °F
Altimeter
30.00 inHg
Observed at
AGW, 3 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.