CHI94LA103

NTSB accident investigation · Ercoupe 415-C · Frankfort, MI · March 11, 1994

Accident · Minor injuriesLimited investigationFinal report
Date
March 11, 1994, 08:45 local (13:45 UTC)
Place
Frankfort, MI
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N2965HErcoupe 415-C
Weather
Visual (VMC) · Day
Status
Completed · report November 18, 1994
Report
Approved by Office Director
FAA report
19940311004899A
Case key
9481

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 preflight and failure to maintain adequate airspeed. A factor was fuel contamination resulting in total loss of engine power on takeoff.

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) - nonmechanicalTakeoff
Fluid,fuel - contaminationFactor
Aircraft preflight - inadequatePilot in commandCause
Loss of control - in flightDescent - emergency
Airspeed(vso) - not maintainedPilot in commandCause
Stall - encounteredPilot in command
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - runway

Analysis

The pilot was at 100 feet AGL during takeoff on a flight to deliver the airplane for annual inspection when a total loss of engine power occurred. During the forced landing, the airplane stalled and contacted the runway in a nose down attitude. The auto gas STC approved airplane had not been flown for several months. During preflight with the airplane parked on a slope, no water was drained from the tanks and a pale 1/2 inch layer at the bottom of the clear gascolator bowl was reported by the pilot. Inspection immediately after the accident revealed approximately 1/4 inch of ice inside the gascolator. Fuel samples from the tanks revealed water and particulates.

Factual narrative

On March 11, 1994, at approximately 0845 hours eastern standard time, an Ercoupe 415-C, N2965H, operated by William Gras of Zeeland, Michigan, experienced a total loss of engine power, stalled and impacted the runway after takeoff from Frankfort City Airport, Frankfort, Michigan and was substantially damaged. The private pilot sustained minor injuries. Visual meteorological conditions prevailed at the time of the accident. No flight plan was filed. The flight operated under 14 CFR Part 91, as a personal flight and was originating at the time of the accident.

The airplane landed in a nose down attitude and slid 89 feet along the runway. The engine, firewall and forward fuselage sustained substantial damage. The FAA Airworthiness Inspector on scene reported that the engine rotated freely by turning the propeller. The carburetor was destroyed during impact. FAA inspection revealed 1/4 inch of ice inside the gascolator immediately after the accident. The wing fuel tanks were ruptured. The nose fuel tank remained intact and was a source for fuel samples. Fuel samples revealed visible particulate contamination as well as visible water and ice particles.

The pilot stated that he was aware of ice in the gascolator bowl, but felt it would not be a problem since it was in the bottom of the bowl. The pilot stated that the airplane had been tied down outside for the winter and last flown in the fall of 1993.

Aircraft

Registration
N2965H
Reported as
Ercoupe 415-C
Category
Airplane
Serial number
3590
Airframe hours
1,735
Engine
Continental C-90-12F, 90 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
William J. Gras
Registered owner
William J. Gras
Airworthiness certificate
Standard, Normal
Last inspection
Annual · October 28, 1992 · 42 hours before
Destination
GRR · Grand Rapids, MI
Airport
3D4 · Frankfort, runway 14, 3,240 × 50 ft, asphalt

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
57
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
835 total · 725 in this make and model · 720 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
20° at 5 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
25 °F, dew point 18 °F
Altimeter
30.00 inHg
Observed at
GRR, 100 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.