LAX92LA381

NTSB accident investigation · Warren-Thomas BD-5J · Chico, CA · September 12, 1992

Accident · FatalLimited investigationFinal report
Date
September 12, 1992, 13:52 local (20:52 UTC)
Place
Chico, CA
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N45DHWarren-Thomas BD-5J
Weather
Visual (VMC) · Day
Status
Completed · report August 26, 1993
Report
Approved by Office Director
FAA report
19920912036359A
Case key
27759

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 misjudged the aerobatic maneuver recovery altitude.

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.

In flight collision with terrain/waterManeuvering
Terrain condition - open field
Aerobatics - initiatedPilot in command
Altitude - misjudgedPilot in commandCause

Analysis

The certificated airline transport pilot, the sole occupant, was nearing completion of an aerobatics demonstration flight at an air show. Witnesses observed the pilot perform a 'split s' maneuver, during which time the experimental micro jet was rolled inverted to a nose down attitude. The airplane descended from the entry portion of the maneuver in a wings level dive to about a 60 to 70 degree nose down attitude until colliding with the ground. A video tape taken by a spectator shows that the airplane's attitude did not change prior to impact. There were no mechanical malfunctions found.

Aircraft

Registration
N45DH
Reported as
Warren-Thomas BD-5J
Category
Airplane, amateur-built
Serial number
13B
Airframe hours
238
Engine
Microturbo TRS-18-046, 220 lbs thrust, turbo jet
Damage
Destroyed
Fire
On-Ground
Flight
Part 91
Operator
Hoover, David
Registered owner
Airborne Technology Inc.
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · March 14, 1992 · 28 hours before
Airport
CIC · Chico

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
50
Certificates
Commercial, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Valid Medical--no waivers/lim.
Seat
Center
Toxicology
Performed
Flight hours
26,500 total · 238 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 10 knots
Visibility
30 statute miles
Lowest ceiling
None
Altimeter
29.00 inHg
Observed at
CIC, 1 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.