DFW07CA175

NTSB accident investigation · Mellema Bede 4 · Ennis, TX · August 3, 2007

Accident · Minor injuriesData collectionFinal report
Date
August 3, 2007, 16:50 local (21:50 UTC)
Place
Ennis, TX
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N76VRMellema Bede 4
Weather
Visual (VMC) · Day
Status
Completed · report August 30, 2007
Report
Approved by Office Director
Parties
Dallas, Texas
FAA report
20070803015949A
Case key
66372

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 inability to maintain control of the airplane following the disconnect of the tailwheel steering chain while 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 control - on ground/waterLanding - roll
Directional control - not possiblePilot in commandCause
Landing gear,tailwheel - disconnectedCause
Ground loop/swerve - encounteredPilot in command
Nose overLanding - roll
Terrain condition - ground

Analysis

The 520-hour private pilot lost directional control of the single-engine tailwheel equipped experimental airplane during the landing roll on. The pilot reported that while in the pattern for the 3,999-foot long, by 50-foot wide runway, the tailwheel developed an excessive shimmy resulting in the loss of directional control. The pilot added that during his fifth touch and go, he first noted that the airplane started a slight drift to the left, which was followed by an uncommanded turn to the right. The airplane exited off the right side of the asphalt runway, into the grass. The airplane subsequently nosed-over and came to rest in an inverted position. The pilot and passenger were able to exit the airplane unassisted. An examination of the airplane revealed that the engine firewall sustained structural damage during the accident sequence. Additionally, the right steering chain was found separated from the steering arm of the tailwheel assembly. The reason for the separation could not be determined. The winds at the time of the accident were reported as light and variable.

Factual narrative

The 520-hour private pilot lost directional control of the single-engine tailwheel equipped experimental airplane during the landing roll on. The pilot reported that while in the pattern for the 3,999-foot long, by 50-foot wide runway, the tailwheel developed an excessive shimmy resulting in the loss of directional control. The pilot added that during his fifth touch and go, he first noted that the airplane started a slight drift to the left, which was followed by an uncommanded turn to the right. The airplane exited off the right side of the asphalt runway, into the grass. The airplane subsequently nosed-over and came to rest in an inverted position. The pilot and passenger were able to exit the airplane unassisted. An examination of the airplane revealed that the engine firewall sustained structural damage during the accident sequence. Additionally, the right steering chain was found separated from the steering arm of the tailwheel assembly. The reason for the separation could not be determined. The winds at the time of the mishap were reported as light and variable.

Aircraft

Registration
N76VR
Reported as
Mellema Bede 4
Category
Airplane, amateur-built
Serial number
Unknown
Airframe hours
750
Engine
Lycoming IO-360-A1B6D, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Thomas H. Barney
Airworthiness certificate
Standard, Normal; Special, Experimental (Special)
Last inspection
Condition · August 1, 2005
Departed
F41 · Ennis, TX
Destination
Ennis, TX
Airport
F41 · Ennis Muni, runway 15, 3,999 × 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
47
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Without waivers/limitations
Last flight review
April 1, 2006
Seat
Left
Flight hours
520 total · 18 in this make and model · 320 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 4 knots
Visibility
10 statute miles
Temperature
91 °F, dew point 70 °F
Altimeter
30.00 inHg
Observed at
LNC, 15 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.

Other investigations on N76VR · 1

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