LAX02LA230

NTSB accident investigation · Violet Dragonfly · Tucson, AZ · July 18, 2002

Accident · Serious injuriesLimited investigationFinal report
Date
July 18, 2002, 09:49 local (16:49 UTC)
Place
Tucson, AZ
Injuries
1 serious, 1 minor
Damage
Destroyed
Phase of flight
Approach
Aircraft
N48RVViolet Dragonfly
Weather
Visual (VMC) · Day
Status
Completed · report July 29, 2004
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20020718016569A
Case key
55275

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 loss of control resulting from his improperly planned approach and an inadvertent encounter with wake turbulence.

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.

Vortex turbulence encounteredApproach - vfr pattern - final approach
In-flight planning/decision - improperPilot in commandCause
Wake turbulence - encounteredPilot in commandCause
Loss of control - in flightApproach - vfr pattern - final approach
Aircraft control - not maintainedPilot in command
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

On short final approach between 50 and 75 feet above the ground, the pilot encountered wake turbulence from a MD80, which had just landed. During the wake turbulence encounter, the accident airplane suddenly rolled into a near vertical left bank, control was lost, and it crashed about 340 feet from the runway. While in the traffic pattern, the pilot had observed the approaching MD80. Air traffic control personnel advised the pilot that the local wind was from 060 degrees, at 7 knots, and the controller twice cautioned the pilot regarding wake turbulence. At 0947:24, the MD80 was about 1 mile from landing on a visual approach to runway 11L and it landed at 0948:29 . The accident pilot crashed at 0949:28, approaching parallel runway 11R. Tucson International Airport operations personnel reported that the impact site was about 340 feet short of the runway.

Factual narrative

On July 18, 2002, about 0949 mountain standard time, a Violet Dragonfly, N48RV, departed from controlled flight and impacted terrain following a wake turbulence encounter on approach to the Tucson International Airport, Tucson, Arizona. The homebuilt experimental airplane was destroyed. The private pilot/airplane owner received minor injuries, and the pilot-rated passenger was seriously injured. The airplane was operating in visual meteorological conditions under the provisions of 14 CFR Part 91. The personal flight originated from near El Paso, Texas, about 2.8 hours earlier, about 0800 mountain daylight time.

The pilot reported to the National Transportation Safety Board investigator that while he was on the downwind leg to runway 11R, he had observed a McDonnell Douglas MD80 on final approach to runway 11L. The pilot indicated that he extended his downwind leg to provide for additional separation between his airplane and the MD80. The MD80 landed on runway 11L. According to the pilot, he proceeded inbound to runway 11R and descended between 50 and 75 feet above the ground. At that altitude, his airplane suddenly rolled into a near vertical left bank. Thereafter, control was totally lost, the pitch attitude decreased, and the airplane impacted the ground. No mechanical malfunctions were experienced with the airplane's flight control system during the flight. The pilot also stated that he believes he encountered wake turbulence from the MD80.

Quality assurance personnel from the Federal Aviation Administration (FAA) reported that the accident airplane had been cautioned about the possibility of encountering wake turbulence from the arriving MD80. At 0947:06, a Tucson airport air traffic controller cleared N48RV to land and stated "...caution wake turbulence em dee eighty two mile final parallel runway." At 0947:24, the controller again cautioned N48RV about wake turbulence, while the MD80 was about 1 mile from the runway. About 9 seconds later, the controller informed N48RV that the wind was from 060 degrees, at 7 knots.

According to the FAA, the MD80 performed a visual approach to runway 11L and landed about 0948:29. N48RV crashed about 0949:05. Tucson International Airport operations personnel reported that the impact site was about 340 feet short of the runway.

Aircraft

Registration
N48RV
Reported as
Violet Dragonfly
Category
Airplane, amateur-built
Serial number
161
Airframe hours
938
Engine
Continental C85, 100 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
Felix J. Boston
Registered owner
Mark D. Snow
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · April 13, 2002 · 20 hours before
Departed
T27 · El Paso, TX
Destination
TUS · Tucson, AZ
Airport
TUS · Tucson International, runway 11R, 8,408 × 75 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
52
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
July 3, 2002
Seat
Left
Flight hours
100 total · 3 in this make and model · 100 as pilot in command · 15 in the last 90 days · 10 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
30° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 64 °F
Altimeter
30.12 inHg
Observed at
TUS

Docket · 4

The files NTSB released with the investigation on June 4, 2004, on NTSB’s docket system: statements, records, photos and specialists’ reports. 502 KB in all.

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.