LAX96LA137

NTSB accident investigation · Bumford GR-7 · Temecula, CA · March 17, 1996

Accident · FatalLimited investigationFinal report
Date
March 17, 1996, 10:00 local (18:00 UTC)
Place
Temecula, CA
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N555GRBumford GR-7
Weather
Visual (VMC) · Day
Status
Completed · report December 10, 1996
Report
Approved by Office Director
FAA report
19960317005799A
Case key
29392

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

failure of the pilot to maintain control of the airplane, while performing an aerobatic maneuver, which resulted in inadvertent entry into a spin. Factors relating to the accident were: the pilot's lack of recent experience in fixed wing aircraft, his lack of experience in the make and model of airplane, and the lack of altitude to recover from an inadvertent spin.

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 flightManeuvering
Aerobatics - performedPilot in command
Aircraft control - not maintainedPilot in commandCause
Stall/spin - inadvertentPilot in commandCause
Lack of recent experience in kind of aircraftPilot in commandFactor
Lack of total experience in type of aircraftPilot in commandFactor
In flight collision with terrain/waterDescent - uncontrolled
Altitude - inadequatePilot in commandFactor

Analysis

The pilot had recently purchased the airplane, and reportedly, this was his first flight in the plane. Witnesses stated the airplane took off and climbed to about 2,000 feet agl in the traffic pattern. The airplane was observed to maneuver through a full right roll and recover; then it entered a 2-turn spin to the right. Witnesses said the spin stopped, then started again, this time to the left. The left spin continued to ground impact. No discrepancies were identified during an examination of the wreckage. The pilot was a military aviator assigned to fly Sikorsky CH53E helicopters. A review of available pilot records did not disclosed evidence of recent fixed-wing flight activity.

Factual narrative

On March 17, 1996, at 1000 hours Pacific standard time, a Bumford GR-7 homebuilt experimental formula one racer, N555GR, collided with the ground following an in-flight loss of control during climb out from the French Valley airport, Temecula, California. The aircraft was owned and operated by the pilot and was beginning a local area personal flight. Visual meteorological conditions prevailed at the airport and no flight plan was filed. The aircraft was destroyed in the ground collision sequence. The certificated commercial pilot, the sole occupant, sustained fatal injuries. The flight was originating at the time of the accident.

FAA inspectors from the Riverside, California, Flight Standards District Office responded to the accident site, interviewed witnesses, and examined aircraft records and the wreckage. The aircraft was assembled in 1988 and had accrued a total time of 93 hours. An annual inspection was endorsed in the aircraft records on March 15, 1996. Prior to the annual, the aircraft had been stored in a disassembled state for an undetermined period of time. The pilot had recently purchased the aircraft and this was reportedly his first flight in it.

Ground witnesses stated the aircraft took off and climbed to about 2,000 feet agl in the traffic pattern. The aircraft suddenly performed a full right roll, and recovered. Then the aircraft entered a 2-turn spin to the right. The witnesses said the spin stopped, then started again, this time to the left. The left spin continued to ground impact.

The FAA inspectors stated that no discrepancies were identified during an examination of the wreckage.

The pilot is a military aviator assigned to fly Sikorsky CH53E helicopters. Review of available pilot records disclosed no evidence of recent fixed-wing flight activity.

An autopsy was performed by the Riverside County Coroner with specimens retained for toxicological analysis. The results of the toxicological tests were negative for alcohol and all screened drug substances.

Aircraft

Registration
N555GR
Reported as
Bumford GR-7
Category
Airplane, amateur-built
Serial number
001
Airframe hours
93
Engine
Continental C-90, 90 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
Gregory T. Riddle
Registered owner
Bill A. Larson
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · March 15, 1996 · 1 hours before
Departed
F70
Airport
F70 · French 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
32
Certificates
Commercial, Military
Airplane ratings
Single-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Toxicology
Performed
Flight hours
1,039 total · 1 in this make and model · 839 as pilot in command · 13 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
110° at 4 knots
Visibility
1.25 statute miles
Lowest ceiling
400 ft broken
Temperature
57 °F, dew point 54 °F
Altimeter
30.00 inHg
Observed at
RIV, 22 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.