GAA16CA357

NTSB accident investigation · Beech 23 · Maryville, MO · July 2, 2016

Accident · Minor injuriesData collectionFinal report
Date
July 1, 2016, 19:12 local (Jul 2, 2016, 00:12 UTC)
Place
Maryville, MO
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N8704MBeech 23
Defining event
Approach-VFR pattern final: Controlled flight into terr/obj (CFIT)
Weather
Visual (VMC) · Day
Status
Completed · report December 5, 2016
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20160701006549A
Case key
93536

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot's failure to see and avoid power lines on approach during landing, resulting a power line strike, uncontrolled descent, and collision with terrain. Contributing to the accident was the pilot's inadequate pre-flight planning.

Findings · 4

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedBeech 23: 3 casesAll aircraft: 1,310 casesProbable cause
Object/animal/substance: wireEnvironmental issues › Physical environment · Effect on equipmentBeech 23: 1 caseAll aircraft: 588 casesProbable cause
Attention/monitoring: monitoring environmentPersonnel issues › Psychological · PilotBeech 23: 2 casesAll aircraft: 809 casesProbable cause
Planning/preparation: flight planning/navigationPersonnel issues › Task performance · PilotBeech 23: 1 caseAll aircraft: 179 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot reported that on final approach to runway 17, he was "distracted" by the runway composition and dimensions. The pilot reported that he identified the high tension power lines just before impact. He recalled that when he saw the power lines he "pulled up" in an attempt to climb, however it was too late, the propeller and engine cowl struck the power lines and the airplane slid down the power line wires toward the ground and came to rest in a corn field. The airplane sustained substantial damage to the fuselage aft of the cabin, and the empennage. The pilot reported that there were no mechanical failures or anomalies with any portion of the airplane during the flight that would have prevented normal flight operations. The Airport/Facility Directory states the dimensions and composition of the runway, displaced threshold and the high tension power lines as: The first 630 feet of the runway is gravel and turf, and the width is 60 feet. The next 1300 feet of runway is a 14 foot wide section of concrete with 18 feet of turf on both sides of the concrete. The final 1120 feet of runway is a 12 to 25 foot wide section of gravel and asphalt chips, with 12.5 to17.5 feet of turf on both sides of the gravel and asphalt chips. The displaced threshold is marked with 5 tires on each side of the runway. High tension power line wires are about 1200 feet north of the runway threshold and do not have any safety markings. The power lines that the airplane struck intersect and cross the approach end of runway 17 at approximately 30 degrees. Furthermore, the power lines are depicted on the FAA Aeronautical Chart for the airport.

Factual narrative

The pilot reported that on final approach to runway 17, he was "distracted" by the runway composition and dimensions. The pilot reported that he identified the high tension power lines just before impact. He recalled that when he saw the power lines he "pulled up" in an attempt to climb, however it was too late, the propeller and engine cowl struck the power lines and the airplane slid down the power line wires toward the ground and came to rest in a corn field. The airplane sustained substantial damage to the fuselage aft of the cabin, and the empennage. The pilot reported that there were no mechanical failures or anomalies with any portion of the airplane during the flight that would have prevented normal flight operations. The Airport/Facility Directory states the dimensions and composition of the runway, displaced threshold and the high tension power lines as: The first 630 feet of the runway is gravel and turf, and the width is 60 feet. The next 1300 feet of runway is a 14 foot wide section of concrete with 18 feet of turf on both sides of the concrete. The final 1120 feet of runway is a 12 to 25 foot wide section of gravel and asphalt chips, with 12.5 to17.5 feet of turf on both sides of the gravel and asphalt chips. The displaced threshold is marked with 5 tires on each side of the runway. High tension power line wires are about 1200 feet north of the runway threshold and do not have any safety markings. The power lines that the airplane struck intersect and cross the approach end of runway 17 at approximately 30 degrees. Furthermore, the power lines are depicted on the FAA Aeronautical Chart for the airport.

Aircraft

Registration
N8704M
Reported as
Beech 23 (NO SERIES)
Category
Airplane
Serial number
M-488
Built
1963
Airframe hours
3,356.6
Engine
Lycoming 0-320-D2A, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 23, 2015
Departed
TVK · Centerville, IA
Destination
78Y · Marryville, MO
Airport
78Y · Rankin, runway 17, 3,050 × 25 ft, gravel
Equipment
None

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
62
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
December 23, 2014
Seat
Left
Restraint
Lap only
Flight hours
463 total · 52 in this make and model · 233 as pilot in command · 52 in the last 90 days · 10 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
100° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 54 °F
Altimeter
30.05 inHg
Observed at
KFNB, 38 nm away

Docket · 5

The files NTSB released with the investigation on October 13, 2016, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.4 MB in all.

FAA reports on this event · 1

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

Other investigations on N8704M · 1

Matched to the same aircraft by N-number and date.