CHI96LA149

NTSB accident investigation · Deweese Bushby Mustang M-II · Lancaster, WI · May 4, 1996

Accident · FatalLimited investigationFinal report
Date
May 4, 1996, 14:35 local (19:35 UTC)
Place
Lancaster, WI
Injuries
1 fatal, 1 serious
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N16JDDeweese Bushby Mustang M-II
Weather
Visual (VMC) · Day
Status
Completed · report September 3, 1996
Report
Approved by Office Director
FAA report
19960504009249A
Case key
10240

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 adequate airspeed, while maneuvering in the traffic pattern, which resulted in an inadvertent stall/spin and collison with the terrain. The pilot's use of abrupt maneuvers was a related factor.

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 - base leg/base to final
Maneuver - abruptPilot in commandFactor
Airspeed - inadequatePilot in commandCause
Stall/spin - inadvertentPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The airplane was observed to take off on runway 18 and remain in ground effect until the end of the runway, then 'it pitched up into a left chandelle maneuver.' It was then observed making 'a hard left turn to the east with the wings about 90 degrees.' A witness, who saw the airplane take off, observed it on left base to runway 18. Another witness saw the airplane 'make a steep banking turn to the south in the direction of the airport,' and noticed that the wings were wobbling. The airplane overshot the final approach path to the runway, increased its bank to 45 degrees, and then spun into the ground. Examination of the wreckage revealed no preimpact anomaly in the engine and other airplane systems.

Factual narrative

On May 4, 1996, at 1435 central daylight time (cdt), a Deweese, Bushby Mustang M-II, N16JD, operated by a private pilot, sustained substantial damage when while maneuvering it lost engine power. The airplane subsequently impacted the terrain. Visual meteorological conditions prevailed at the time of the accident. The personal flight was being conducted under 14 CFR Part 91. No flight plan was on file. The pilot sustained serious injuries. The passenger sustained fatal injuries. The local flight originated at Lancaster, Wisconsin, at 1400 cdt.

In his written statement, the pilot recalled allowing the passenger to handle the controls. The last thing he can recall of the flight was heading towards Lancaster, Wisconsin.

One witness "first saw the airplane south of the (Lancaster Municipal)airport, just south of the runway end. The aircraft made an abrupt pull-up at an angle estimated to be about 45 degrees. The aircraft made a hard left turn to the east with the wings about 90 degrees." The witness then lost sight of the airplane behind some buildings. The witness was driving north on U. S. Highway 61, which parallels Runway 36-18 at Lancaster Municipal Airport.

Another witness traveling north on U. S. Highway 61, also saw the airplane "traveling in a southerly direction." The witness said that the airplane was 120 feet above the ground when he noticed it. "The aircraft made a sudden bank to the left at an angle of about 70 degrees. Then the aircraft fell to the ground like someone pushed it down." The witness lost sight of the airplane behind a farm house.

A third witness driving north on U. S. Highway 61, noticed the airplane east of the highway traveling west at about 250 feet above the ground. The witness saw the airplane "make a steep banking turn to the south in the direction of the airport." While the airplane was making its steep turn, the witness noticed that the wings were wobbling. Then, from an estimated altitude of 150 feet , the airplane fell to the ground. The witness proceeded to the accident site to render assistance. On arrival at the sight, the witness "noticed fuel flowing from the aircraft."

A witness on the airport observed the airplane takeoff. "The airplane stayed in ground effect until the end of the runway at which time, it pitched up into a left chandelle maneuver." The witness later observed the airplane on left base to runway 18. "The airplane was 100 feet above the ground moving fast." The witness saw the airplane overshoot the final approach path to the runway. "The airplane increased its bank to 45 degrees and then spun into the ground." The witness did not see the airplane impact the terrain.

The Federal Aviation Administration (FAA) Inspector who examined the wreckage at the scene, found the airplane in an open field one mile north of the airport. The airplane's right forward cowling, engine mount and firewall were bent to the right. The nose gear had sheared off. The right wing had separated from the center wing section at the rivet line and was curled up at the tip. It was located 8 feet in front of the main wreckage. The left wing and center wing sections separated from the fuselage and were found resting on top of the fuselage. The forward fuselage was crushed upward at a 45-degree angle and canted approximately 30-degrees to the right. The tailcone was bent 45- degrees left. The right elevator had separated from the horizontal stabilizer. The wooden propeller had splinted and splay marks were found on the spinner. Flight control continuity was established. Approximately four gallons of fuel were recovered from the airplane's single fuel tank. There was no smell of fuel in the area. All other airplane systems revealed no anomalies. The engine was retained for further testing.

The engine was test run at Belvidere Airmotive, Poplar Grove, Illinois, on May 10, 1996. An FAA inspector and a representative from Textron Lycoming were present. No anomalies were found.

Aircraft

Registration
N16JD
Reported as
Deweese Bushby Mustang M-II (BUSHBY MUS)
Category
Airplane, amateur-built
Serial number
MII-519
Airframe hours
721
Engine
Lycoming O-320-D2C, 160 lbs thrust, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Lavon C. Hall
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · August 3, 1995 · 19 hours before
Departed
73C
Airport
73C · Lancaster Municipal, runway 18, 3,850 × 45 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
65
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
2,133 total · 633 in this make and model · 2,133 as pilot in command · 6 in the last 90 days · 2 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
7° at 6 knots
Visibility
10 statute miles
Temperature
61 °F, dew point 46 °F
Altimeter
30.00 inHg
Observed at
DBQ, 21 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.