DEN04CA068

NTSB accident investigation · Ercoupe 415G · Falcon, CO · May 5, 2004

Accident · Minor injuriesData collectionFinal report
Date
May 5, 2004, 11:05 local (17:05 UTC)
Place
Falcon, CO
Injuries
2 minor
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N94405Ercoupe 415G
Weather
Visual (VMC) · Day
Status
Completed · report July 29, 2004
Report
Approved by Office Director
Parties
Denver, Colorado
FAA report
20040505009259A
Case key
59171

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 failure to maintain aircraft control. A contributing factor was the clear air turbulence encounter.

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 weatherTakeoff - initial climb
Weather condition - turbulence,clear airFactor
Loss of control - in flightApproach - vfr pattern - downwind
Aircraft control - not maintainedPilot in commandCause
Remedial action - not successfulPilot in command
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - open field
Terrain condition - ditch

Analysis

The pilot said the airplane was at maximum gross weight. Shortly after departure, he encountered clear air turbulence. At full power of 2,250 rpm and an indicated airspeed of 75 mph, the airplane would not climb. He decided to turn around and return to the airport. After turning onto the downwind leg, the airplane encountered a "rotor wave" and the left wing dropped. The pilot applied full right aileron with no effect. The airplane entered a spiral and impacted terrain. The left wing tip scraped the ground, spinning the airplane around. It became airborne again, then the right main landing gear struck a ditch. This collapsed the nose and right main landing gears. In addition, the right wing was sheared and the empennage was buckled.

Factual narrative

On May 5, 2004, approximately 1105 mountain daylight time, an Engineering and Research (Ercoupe) 415G, N94405, owned and operated by the pilot, was destroyed when it impacted terrain near Falcon, Colorado. The private pilot and his passenger received minor injuries. Visual meteorological conditions prevailed, and no flight plan had been filed for the personal flight being conducted under Title 14 CFR Part 91. The flight originated approximately 1055.

According to the pilot, he and his wife departed Meadow Lake Airport for a local flight. The airplane was at maximum gross weight. They encountered clear air turbulence. At full power of 2,250 rpm and an indicated airspeed of 75 mph, the airplane would not climb. He decided to turn around and return to the airport. After turning onto the downwind leg, the airplane encountered a "rotor wave" and the left wing dropped. The pilot applied full right aileron input with no effect. The airplane entered a spiral and impacted terrain. The left wing tip scraped the ground, spinning the airplane around. It became airborne again, then the right main landing gear struck a ditch. This collapsed the nose and right main landing gears. In addition, the right wing was sheared and the empennage was buckled.

Aircraft

Registration
N94405
Reported as
Ercoupe 415G
Category
Airplane
Serial number
17271699
Engine
Lycoming O-320, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
William L. Haden
Airworthiness certificate
Standard, Normal
Departed
00V · Peyton, CO
Airport
OOV · Meadowlake Airport, runway 15

Flight crew · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
43
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1
Flight hours
1,197 total · 178 in this make and model · 1,114 as pilot in command · 40 in the last 90 days · 9 in the last 30 days · 1 in the last 24 hours
Role
Student pilot
Age
17
Certificate
Student
Medical
Class 1
Flight hours
12 total · 7 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 6 knots
Visibility
10 statute miles
Temperature
73 °F

FAA reports on this event · 1

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