DEN00LA131

NTSB accident investigation · Rotorway Executive 162F · Tooele, UT · July 16, 2000

Accident · Minor injuriesLimited investigationFinal report
Date
July 16, 2000, 12:50 local (18:50 UTC)
Place
Tooele, UT
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N6399LRotorway Executive 162F
Weather
Visual (VMC) · Day
Status
Completed · report March 2, 2001
Report
Approved by Office Director
FAA report
20000716013489A
Case key
49705

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 pilot's inadequate weather evaluation, which resulted in a downwind landing, and his failure to maintain aircraft control. A factor was the tailwind.

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 - in flightApproach - vfr pattern - final approach
Weather condition - tailwindFactor
Weather evaluation - inadequatePilot in commandCause
Aircraft control - not maintainedPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The winds had been 'light, but had changed direction and were starting to gust' when the pilot landed for fuel. He decided he had time to practice some additional maneuvers, so he took off to the south. He heard another pilot announce he was departing on runway 16 so when he decided to land, he entered the traffic pattern for runway 16. He said he was about 10 feet off the ground and at a speed of 10 knots when the helicopter 'just drop[ped] out of transitional lift. . .All of a sudden, [the] tail came up [and the] nose went down. [I] pulled back and up on [the] collective [control], but could not recover.' The pilot reported that the wind had shifted from the south to the north, and told an FAA inspector that it 'push[ed] me down and flip[ped] me over.' The helicopter began to spun, struck the ground, and rolled over.

Factual narrative

On July 16, 2000, approximately 1250 mountain daylight time, a Carlston Rotorway Executive 162F, N6399L, was substantially damaged when it collided with terrain during landing at Tooele-Bolinder Field/Tooele Valley Airport, Tooele, Utah. The student pilot, the sole occupant aboard, received minor injuries. Visual meteorological conditions prevailed, and no flight plan had been filed for the instructional flight being conducted under Title 14 CFR Part 91. The flight originated at Tooele at an unknown time.

According to the pilot's accident report, after practicing flight maneuvers he landed for fuel. The winds had been "light, but had changed direction and were starting to gust." He decided he had time to practice some additional maneuvers, so he took off to the south. He heard another pilot announce he was departing on runway 16 so when he decided to land, he entered the traffic pattern for runway 16. He said he was about 10 feet off the ground and at a speed of 10 knots when the helicopter "just drop[ped] out of transitional (sic) lift. . .All of a sudden, [the] tail came up [and the] nose went down. [I] pulled back and up on [the] collective [control], but could not recover." The pilot reported that the wind had shifted from the south to the north.

When an FAA inspector examined the helicopter, the pilot told him the wind shifted, "pushing me down and flipping me over." The helicopter began to spin, struck the ground, and rolled over. The fuselage was extensively damaged and the main rotor blades were destroyed.

Aircraft

Registration
N6399L
Reported as
Rotorway Executive 162F (EXECUTIVE)
Category
Helicopter, amateur-built
Serial number
2598
Engine
Rotorway RI162F, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Carl V. Carlston
Airworthiness certificate
Special, Experimental (Special)
Departed
TVY
Destination
TVY
Airport
TVY · Bolinder-Tooele Valley

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
Student
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
64 total · 61 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 5 knots, gusting 20
Visibility
5 statute miles
Temperature
90 °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.