WPR09LA004

NTSB accident investigation · Bonde TF-51D · Sandy Valley, NV · October 5, 2008

Accident · FatalLimited investigationFinal report
Date
October 5, 2008, 09:53 local (16:53 UTC)
Place
Sandy Valley, NV
Injuries
1 fatal
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N267BBonde TF-51D
Defining event
Maneuvering: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report March 23, 2009
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20081005847909A
Case key
69226

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 NTSB’s determination of the probable cause, and any contributing factors.

The pilot's failure to maintain adequate airspeed while maneuvering to land, resulting in an aerodynamic stall. Contributing to the accident was the pilot's diverted attention while attempting to extend the landing gear.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings.

Analysis

According to multiple witnesses, the pilot was unable to extend the left main landing gear after departure and conducted a series of low approaches over the runway while talking via radio to people located on the ground. After conducting six passes over the runway, the pilot was able to extend the left main landing gear about two-thirds of the way down. The pilot continued to circle the airport within the traffic pattern as the witnesses located on the ground advised him to "slip the airplane to the left then right." Witnesses reported that while the airplane was on downwind for the runway at an altitude of about 400-500 feet above ground level, the airplane "appeared to enter a slip" followed by an immediate roll to the right into a nose-low attitude, and then descended into terrain. Examination of the airframe and engine by a Federal Aviation Administration inspector revealed no preimpact anomalies that would have precluded normal operation. The reason for the left main landing gear not extending was undetermined.

Factual narrative

The factual narrative429 words

On October 5, 2008, about 0953 Pacific daylight time, an amateur built Bonde TF 51D experimental airplane, N267B, was substantially damaged when it impacted terrain while maneuvering near the Sky Ranch Airport (3L2), Sandy Valley, Nevada. The commercial pilot, sole occupant of the airplane, was killed. The airplane was registered to a private individual and operated by the pilot under the provisions of Title 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed and no flight plan was filed for the personal flight. The local flight originated from 3L2 at 0930. According to multiple witnesses located at 3L2, the pilot was unable to extend the left main landing gear after departure and conducted a series of low approaches over the runway while talking via radio to people located on the ground. After conducting six passes over the runway, the pilot was able to extend the left main landing gear about two-thirds the way down. The pilot continued to circle the airport within the traffic pattern as the witnesses located at the airport advised him to "slip the airplane to the left then right." Witnesses reported that while the airplane was on downwind for runway 21 at an altitude of about 400-500 feet above ground level (agl), the airplane "appeared to enter a slip" followed by an immediate roll to the right into a nose low attitude and descended into terrain. Witnesses further reported that it was the accident pilot's first flight in the airplane, which he had just recently purchased. The witnesses added that radio communications with the pilot was "hampered by the loudness of the engine." Examination of the airplane by a Federal Aviation Administration (FAA) inspector revealed that the airplane impacted level open desert terrain about 0.5 miles from 3L2. All primary flight controls were accounted for at the accident site. The left and right wing leading edges were crushed aft. The forward portion of the fuselage was heavily damaged. Flight control continuity was established from the cockpit to all primary flight controls. Examination of the airframe and engine by the FAA inspector revealed no anomalies that would have precluded normal operation. The reason for the left main landing gear not extending was undetermined. The Clark County Coroner's Office conducted an autopsy on the pilot on October 6, 2008. The medical examiner determined that the cause of death was “…multiple blunt force injuries.” The FAA's Civil Aeromedical Institute (CAMI) in Oklahoma City, Oklahoma, performed toxicology tests on the pilot. According to CAMI's report, carbon monoxide, cyanide, volatiles, and drugs were tested, and had negative results.

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident.

Aircraft

Registration
N267B
Reported as
Bonde TF-51D
Category
Airplane, amateur-built
Serial number
018
Airframe hours
25
Engine
Chevy 350, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Gregory Jaspers
Registered owner
Robert Bonde
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Continuous airworthiness · August 1, 2008
Departed
3L2 · Sandy Valley, NV
Destination
3L2 · Sandy Valley, NV
Airport
3L2 · Sky Ranch Airport

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
Fatal
Certificates
Commercial, Airline transport
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 2, With waivers/limitations
Last flight review
July 29, 2008
Seat
Front
Toxicology
Performed
Flight hours
1,400 total

Weather

Conditions
Visual (VMC) · Day
Wind
100° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
66 °F, dew point 48 °F
Altimeter
29.88 inHg
Observed at
LAS, 28 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.