FTW93LA124

NTSB accident investigation · Violet Dragonfly · Carlsbad, NM · April 11, 1993

Accident · No injuriesLimited investigationFinal report
Date
April 11, 1993, 10:19 local (16:19 UTC)
Place
Carlsbad, NM
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N48RVViolet Dragonfly
Weather
Visual (VMC) · Day
Status
Completed · report October 25, 1993
Report
Approved by Office Director
FAA report
19930411008799A
Case key
18726

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 improper installation of the control stick assembly and the subsequent separation of the flight control stick assembly from the mount

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.

Airframe/component/system failure/malfunctionLanding - flare/touchdown
Maintenance,installation - improperPilot in commandCause
Flt control syst,yoke/control stick - separationCause
Loss of control - in flightLanding - flare/touchdown
In flight collision with terrain/waterLanding - flare/touchdown

Analysis

During landing the airplane bounced and the pilot applied aft pressure on the control stick assembly. With the aft pressure applied the control stick assembly separated from its normal mounting position and the pilot lost control of the airplane which impacted the terrain. The control stick and pistol grip were not equipped with a retention locking device. The pilot had recently removed the stick in order to install a push to talk switch for his radio. When he reinstalled the stick he noted that it was loose, so he wrapped it with heavy tape in an effort to secure it

Factual narrative

On April 11, 1993, at 1019 mountain daylight time (MDT) a Violet Dragonfly, N48RV, was substantially damaged during landing at the Cavern City Air Terminal, Carlsbad, New Mexico. Weather for the local area flight was visual meteorological conditions. The private pilot was not injured. Bob W. Violet was the registered owner.

During an interview with the pilot, conducted by a Federal Aviation Administration (FAA) inspector, he reported that during landing he touched down hard and bounced and during the recovery he applied aft stick. As he was applying the aft stick the pistol grip separated from the stick and he lost control of the airplane. The FAA inspector examined the stick and determined that there was no retention device designed into the stick assembly or the pistol grip to provide for security and prevention of separation. Discussions with the airplane designer revealed that the stick assembly was designed with a retaining fastener. During the interview with the pilot he reported that he had removed the stick so that he could install a push to talk switch for his newly installed radio. During the reinstallation he noted that the stick was loose so he wrapped it in heavy tape. He further stated that when he removed the stick assembly that it was a tight fit, but that no retaining device was installed. The present owner purchased the airplane from another owner and not direct from the manufacturer.

Aircraft

Registration
N48RV
Reported as
Violet Dragonfly
Category
Airplane, amateur-built
Serial number
166
Airframe hours
166
Engine
Volkswagen 1835 CC, 60 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Snow, Mark D.
Registered owner
Snow, Mark D.
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · September 6, 1992 · 18 hours before
Departed
ATS · Artisia, NM
Destination
CNM
Airport
CNM · Carlsbad, runway 32, 5,830 × 150 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
40
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
133 total · 12 in this make and model · 12 in the last 90 days · 12 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 9 knots
Visibility
50 statute miles
Lowest ceiling
None
Temperature
75 °F
Altimeter
29.00 inHg

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 N48RV · 1

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