NYC98LA101

NTSB accident investigation · Beech D95A · Mount Sterling, KY · April 24, 1998

Accident · Serious injuriesLimited investigationFinal report
Date
April 24, 1998, 16:23 local (20:23 UTC)
Place
Mount Sterling, KY
Injuries
2 serious
Damage
Destroyed
Phase of flight
Approach
Aircraft
N479AMBeech D95A
Weather
Visual (VMC) · Day
Status
Completed · report August 27, 1999
Report
Approved by Office Director
FAA report
19980424007709A
Case key
39557

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

Was the failure of the flight instructor to feather the engine in a timely manner. Factors were improper placement of the fuel selector valve by the student and failure of the flight instructor to adequately supervise its placement.

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 flightGo-around (vfr)
Fuel tank selector position - improperDual studentFactor
Supervision - inadequatePilot in command(cfi)Factor
Emergency procedure - not performedPilot in command(cfi)Cause
Directional control - not possible
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - open field

Analysis

During a go-around on, the airplane yawed nose left and entered a descending left turn. The airplane struck the ground in an open field to the left of the runway and burned. Examination revealed the left fuel selector was OFF, and the right fuel selector was ON. The fuel lines were intact and about 5 ounces of fuel was found in the fuel line to the right engine, and about 1/2 ounce of fuel was found in the fuel line to the left engine. The flight instructor reported the pilot receiving instruction had checked the fuel selectors as they entered the traffic pattern and he verified their position. When asked why he did not feather the propeller on the left engine, the flight instructor reported he was too busy trying to fly the airplane.

Factual narrative

On April 24, 1998, about 1623 eastern daylight time, a Beech D95A, N479AM, was destroyed when it struck the ground during a go-around at the Montgomery County Airport, Mount Sterling, Kentucky. The certificated flight instructor and a commercial rated pilot received serious injuries. Visual meteorological conditions prevailed for the local multi-engine training flight. No flight plan had been filed for fight which departed Montgomery County Airport about 1 1/2 hours prior to the accident and was conducted under 14 CFR Part 91.

The flight instructor reported that they were returning from a multi-engine training flight. As the entered the traffic pattern the fuel selectors were checked to ensure that both fuel valves were on the main tanks. On final approach, about 1/2 mile from the runway, the airplane drifted left of course and the flight instructor called for a go-around. In a written statement, the flight instructor reported:

"...I noticed that the airspeed had dropped to approximately 103 MPH. At that point I instructed the student to go around. The student added full power on both engines and retracted the gear and flaps. The airplane started rolling to the left giving the indication that the left engine had failed to respond. I quickly came on the controls with the student and checked both throttles at full, and was unable to correct the left rolling and yawing tendencies. As we crossed over the field boundary, the airplane was approximately 100 feet left of the runway edge, veering further left toward a slight rise and trees. My last memory before the crash was of descending toward the terrain in a left wing low attitude with full right yoke and rudder. I retarded both throttles to idle in an effort to keep the airplane upright.

According to an Inspector from the Federal Aviation Administration (FAA), the airplane impacted the ground about 500 feet past the approach end of the runway, and about 400 feet left of the runway centerline. Following touchdown, the airplane spun around and slid for about 100 feet. After it came to rest, a fire developed which destroyed the cockpit/cabin of the airplane.

The flight instructor was interviewed by a FAA inspector who stated:

"Upon returning to the airport, ...[The flight instructor] briefed that it would be a two-engine normal landing to a full stop, followed by taxi back for takeoff and closed traffic...Prior to entering the traffic pattern performed a before landing check which included placing the fuel selector valves in the MAIN position. Again,...[the flight instructor] performed the steps, and ...[the student] verified them."

"...[the flight instructor] said that after getting on the controls during the go-around, he felt that the left engine had probably failed. When asked why he didn't continue the procedure and feather the left engine, he said that he was too busy trying to fly the aircraft. He did, however, just prior to ground contact, consider retarding both throttles to restore directional control. He cannot recall whether he did so."

The FAA inspector also reported that the landing gear and flaps were retracted, and neither propeller had been feathered. There was no evidence of a mechanical failure or malfunction with either engine. Flight control continuity was verified to the primary flight control surfaces. The left engine fuel selector was found OFF, and the right engine fuel selector was found ON. The fuel lines between the mechanical fuel pump and the fuel injection manifold on both engines were intact. Approximately 5 ounces of fuel was found in the lines of the right engine, while about 1/2 ounce of fuel was found in the lines of the left engine. Additionally, fuel was found in the right engine mechanical fuel pump, and no fuel was found in the left engine mechanical fuel pump.

According to pilot records, the flight instructor had 3,480 hours with 70 hours in make and model of airplane. He had flown about 75 hours in the preceding 90 days. The multi-engine trainee had 2,816 hours, with 5 hours in make and model airplane. He had flown 22 hours in the preceding 90 days.

Aircraft

Registration
N479AM
Reported as
Beech D95A
Category
Airplane
Serial number
TD-703
Airframe hours
3,940
Engine
Lycoming IO-36-BIB, 180 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Instructional · Part 91
Operator
Kentucky Airmotive Inc.
Registered owner
Hill'S Enterprise, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 8, 1997 · 71 hours before
Departed
IOB
Airport
I0B · Mount Sterling, runway 21, 5,001 × 75 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
46
Certificates
Private, Commercial, Airline transport, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
3,480 total · 75 in this make and model · 2,500 as pilot in command · 75 in the last 90 days · 25 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 12 knots, gusting 18
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F

FAA reports on this event · 1

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