WPR19FA159

NTSB accident investigation · Titan Titan II · Summerville, OR · June 5, 2019

Accident · FatalClass 3 · FieldFinal report
Date
June 4, 2019, 19:43 local (Jun 5, 2019, 02:43 UTC)
Place
Summerville, OR
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N4362VTitan Titan II
Defining event
Maneuvering-low-alt flying: Low altitude operation/event
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Western Pacific Region
Parties
FAA
FAA report
20190604005879A
Case key
99550

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The noncertificated pilot’s exceedance of the airplane’s critical angle of attack while maneuvering at low altitude, which resulted in an aerodynamic stall/spin and impact with terrain.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Performance/control parameters: angle of attackAircraft › Aircraft oper/perf/capability · Not attained/maintainedVersteeg Robert H JR TITAN II: 1 caseAll aircraft: 990 casesProbable cause
Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not specifiedVersteeg Robert H JR TITAN II: 1 caseAll aircraft: 1,310 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The non-certificated pilot was seen by witnesses flying at low altitude, which they described as near treetop and powerline level. One witness reported that the airplane entered a “straight up” climb about 300 ft, then dove to the ground and leveled the airplane about 50 ft above ground; the pilot did this three times before the accident occurred during the fourth maneuver. Another witness reported that, during the last maneuver, at the top of the climb, the airplane aerodynamically stalled, spun to the left, and impacted the ground. Postaccident examination of the airframe and engine revealed no mechanical anomalies that would have precluded normal operation. Given the available evidence, it is likely that the pilot exceeded the airplane’s critical angle of attack, and the airplane entered an aerodynamic stall and spin.

Factual narrative

On June 4, 2019, about 1943 Pacific daylight time, an experimental Titan II airplane, N4362V, was substantially damaged when it was involved in an accident near Summerville, Oregon. The pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. Family members reported that the pilot recently purchased the airplane and completed its assembly three days before the accident. They stated that the accident flight was the pilot’s third flight since assembly. Witnesses in the area of the accident site reported seeing the airplane flying at treetop or power line level. One witness reported that he watched the airplane climb “straight up” about 300 ft, then dive to the ground and level out about 50 ft above ground level three times before the accident maneuver. Another witness reported observing similar maneuvers with the pilot “gunning the engine hard, then backing off.” This witness reported that, during the last maneuver, at the top of the climb to 300 ft, the airplane aerodynamically stalled, spun to the left, and impacted the ground. The FAA Forensic Sciences Laboratory performed toxicological testing on the pilot’s tissue, with negative findings for all tested-for drugs. The pilot did not hold a Federal Aviation Administration pilot or medical certificate. The pilot’s family reported that the pilot did not keep track of any flight hours. The wreckage was located in a flat, open field. All major structural components were located with the main wreckage. Flight control continuity was established for the elevator, ailerons, and rudder. Examination of the engine revealed that all four spark plugs exhibited signatures consistent with normal wear. The crankshaft was manually rotated by hand at the propeller. Rotational continuity was established throughout the engine valve train. Thumb compression was obtained on all four cylinders. No anomalies were revealed with the engine driven fuel pump, or the carburetors. The fuel filter appeared free of debris.

Aircraft

Registration
N4362V
Reported as
Titan Titan II (Undesignat)
Category
Airplane, amateur-built
Serial number
D969112COHK0203
Built
2010
Engine
Rotax 912UL, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Departed
LGD · La Grande, OR
Destination
LGD · La Grande, OR
Equipment
Unknown

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
29
Injuries
Fatal
Seat
Rear
Restraint
4-point
Toxicology
Performed

Weather

Conditions
Visual (VMC) · Day
Wind
290° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 36 °F
Altimeter
30.04 inHg
Observed at
KLGD, 12 nm away

Docket · 5

The files NTSB released with the investigation on May 12, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 10.3 MB 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.