FTW96FA181

NTSB accident investigation · Beech A36 · Oklahoma City, OK · April 25, 1996

Accident · FatalField investigationFinal report
Date
April 25, 1996, 12:09 local (17:09 UTC)
Place
Oklahoma City, OK
Injuries
1 fatal, 1 minor
Damage
Destroyed
Phase of flight
Landing
Aircraft
N2558WBeech A36
Weather
Visual (VMC) · Day
Status
Completed · report December 23, 1996
Report
Approved by Office Director
FAA report
19960425008489A
Case key
19634

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's delay in aborting the landing and his failure to obtain/maintain sufficient airspeed during the aborted landing, which resulted in an inadvertent stall and collision with the terrain. Factors relating to the accident were: the pilot's improper interpretation of the recommended landing runway, his selection of the wrong runway, and the resultant tailwind.

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 flightLanding - aborted
Interpretation of instructions - improperPilot in commandFactor
Weather condition - high wind
Weather condition - tailwindFactor
Wrong runway - selectedPilot in commandFactor
Proper touchdown point - not attainedPilot in command
Aborted landing - delayedPilot in commandCause
Airspeed - not obtained/maintainedPilot in commandCause
Stall - inadvertentPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The pilot called a fixed base operator (FBO) on Unicom frequency about 10 miles from the airport (Expressway Airpark). He was informed that the winds were 'out of the north, favoring runway 02.' Later, the pilot was heard to announced a 'go-around from runway 20.' The FBO told the pilot that he was 'trying to land downwind, use runway 02' to which the pilot replied 'OK.' The pilot made another call 'going around at Expressway.' A flight instructor contacted the pilot and notified him that he was using the wrong runway. The pilot's reply was unclear. The pilot next reported on a 'left downwind for 02.' The FBO corrected the pilot and told him 'you are upwind, the winds are from the north, preferred runway is 02' to which the pilot replied 'runway zero two.' On the third approach, the airplane touched down beyond the midpoint of runway 20. After rolling for a few feet, the pilot applied power and the airplane climbed to approximately 50 feet above the ground. The landing gear and flaps were retracted as the airplane assumed an exaggerated nose high climb attitude. Witnesses reported that the airplane was 'waffling' as it continued southbound. Subsequently, the pilot lost control of the airplane, and it impacted the ground.

Factual narrative

History of flight

On April 25, 1996, at 1209 central daylight time, a Beech A36, N2558W, owned and operated by the Williford Energy Company of Tulsa, Oklahoma, was destroyed following a loss of control near Oklahoma City, Oklahoma. The instrument rated private pilot was fatally injured, while his passenger sustained minor injuries. The flight originated at Tulsa, Oklahoma, approximately 40 minutes prior to the accident. Visual meteorological conditions prevailed for the Title 14 CFR Part 91 flight. A flight plan was not filed for the business flight.

The pilot's secretary called the fixed base operator at the Expressway Airpark to advise them that N2558W was en route with an estimated arrival time of 1150, and they were requesting a taxi to transport the two occupants to the nearby Remington Park for a business lunch. According to the fixed base operator, the pilot called them on the Unicom frequency when he was 10 miles northeast of the airport.

The operator stated that he informed the pilot that the winds were "out of the north, favoring runway 02." The operator further stated that within a few minutes he heard the pilot announcing a "go-around from runway 20." The operator told the pilot "that he was trying to land downwind, use runway 02" to which the pilot replied "OK." The pilot made another call "going around at Expressway" and a flight instructor employed by the operator contacted the pilot again and notified him that "he was using the wrong runway." The pilot's reply was unclear.

The pilot next reported on a "left downwind for 02" and the operator corrected the pilot and told him "you are upwind, the winds are from the north, preferred runway is 02" to which the pilot replied "runway zero two." On the third approach, the airplane touched down on runway 20 beyond the mid point of the 3,350 foot runway. After rolling for a few feet, the sound of application of takeoff power was heard.

The airplane climbed to approximately 50 feet above the ground and the landing gear and flaps were retracted as the airplane assumed an exaggerated nose high climb attitude. Witnesses at the airport reported that the airplane was "waffling" as it continued southbound. The nose of the airplane appeared to be momentarily lowered twice prior to the loss of control and subsequent impact with the ground.

Personnel information

The private pilot added his instrument rating on February 2, 1995. As chairman of his company, he was the only pilot authorized to fly the company's airplane. The pilot's logbooks were kept in the flight kit carried in the cockpit. The flight kit was consumed by fire and the pilot's logbooks were never located.

The pilot completed the Flight Safety International Bonanza Pilot Initial Qualification Course on January 21, 1994. As of September 18, 1995, the pilot had accumulated a total of 291 hours of dual instruction.

Aircraft information

The 1986 model airplane was purchased by the pilot's company on December 22, 1993, and registered to the Tulsa-based Williford Energy Company. Estimates of the weight of the airplane at the time of the accident places the airplane within its weight and balance limits.

Shoulder harnesses were available for the front two seats, and lap belts were available for all six seats.

Wreckage and impact information

The first evidence of impact was on the corner of the roof of a single story motel. The initial ground scar was 14 feet in length on a measured heading of 165 degrees. The airplane came to a stop approximately 70 feet from the initial point of ground impact. A tree penetrated the root of the right wing. The airplane came to rest on a southerly heading.

The fuel selector was found on the left main tank position. Both fuel tanks were compromised. The engine was found separated from the airframe approximately 11 feet forward of the resting place of the main wreckage. The propeller was found attached to the crankshaft.

The landing gear and the flaps were found in the retracted position. Examination of the airplane and engine at the accident site did not disclose any evidence of mechanical problems or anomalies that would have prevented normal operation.

The engine was transported to the manufacturer's facility where it was satisfactorily ran on October 15, 1996, in test cell #44, under the supervision of an NTSB investigator.

Medical and pathological information

An autopsy was performed by Chai S. Choi, M.D. of the Office of the Chief Medical Examiner in Oklahoma City, Oklahoma. The toxicology report was negative.

The pilot received a medical exemption under FAA Part 67.91 from the Federal Air Surgeon for vision, heart disease and an ulcer.

Fire

A post crash fire destroyed the airplane from the front seats forward to the nose section. No evidence of pre-impact fire was found during the investigation.

Survival aspects

The passenger, who was the pilot's wife, was seated on the left middle aft facing seat. She exited the aircraft unassisted through the aft double doors on the right side of the airplane. She was treated at a local hospital for burns on her legs and arms and was released.

The remains of the cabin door locking mechanism were found in the locked position. The airplane came to rest with the cabin door approximately 18 inches from the trunk of a tree. The right escape window was found unlocked, but still closed. The airplane's fire extinguisher was found out of its holding bracket but fully charged.

According to emergency medical personnel that responded to the accident site, the pilot's shoulder harness and seat belt were still attached when they arrived on-scene.

Additional data

The wreckage was released to the owner's representative upon completion of the field portion of the investigation. The engine was released upon completion of the test run at the engine manufacturer's facility.

Aircraft

Registration
N2558W
Reported as
Beech A36
Category
Airplane
Serial number
E-2306
Airframe hours
1,060
Engine
Continental IO-550-B1, 300 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Personal · Part 91
Registered owner
Richard A. Williford
Airworthiness certificate
Standard, Utility
Last inspection
Annual · May 3, 1995 · 9 hours before
Departed
TUL · Tulsa, OK
Destination
2EJ
Airport
2EJ · Expressway Airpark, runway 2, 3,350 × 50 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
61
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
425 total · 330 in this make and model · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
10° at 24 knots, gusting 29
Visibility
10 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 37 °F
Altimeter
29.00 inHg
Observed at
OKC, 12 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.