DEN92LA029

NTSB accident investigation · Warfield BD-4 · Englewood, CO · February 1, 1992

Accident · Minor injuriesLimited investigationFinal report
Date
February 1, 1992, 08:40 local (15:40 UTC)
Place
Englewood, CO
Injuries
1 minor
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N689WWarfield BD-4
Weather
Visual (VMC) · Day
Status
Completed · report June 11, 1993
Report
Approved by Office Director
FAA report
19920201001509A
Case key
18193

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

Improper vr speed used, causing an inadvertent stall/mush. A factor was: the pilot's lack of total experience in aircraft make and model.

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 flightTakeoff - initial climb
Airspeed(vr) - improperPilot in commandCause
Stall/mush - inadvertentPilot in commandCause
Lack of total experience in type of aircraftPilot in commandFactor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

This was the first flight for the amateur homebuilt airplane. The pilot was seen to use about 6975 feet of the 10,001 foot runway before lifting off. The pilot said he rotated and climbed out at 67 mph. The airplane drifted to the right and the right wing dropped. The pilot attempted to 'mush' the airplane onto the ground. Tower controllers said the airplane lifted off in an extreme nose high attitude and appeared to stall. Pilots familiar with the airplane said the airplane should have been rotated between 80-85 mph IAS.

Aircraft

Registration
N689W
Reported as
Warfield BD-4
Category
Airplane, amateur-built
Serial number
689
Airframe hours
8
Engine
Ford V-6/3.8 LITRE, 200 horsepower, reciprocating
Damage
Destroyed
Flight
Part 91
Operator
Warfield, Robert W.
Registered owner
Warfield, Robert W.
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · February 15, 1991 · 8 hours before
Airport
APA · Centennial, runway 17, 10,001 × 100 ft, asphalt

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
63
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
464 total · 417 as pilot in command · 2 in the last 90 days · 1 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
130° at 5 knots
Visibility
50 statute miles
Lowest ceiling
None
Temperature
37 °F, dew point 27 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.