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NTSB accident investigation · Zeiler Bakeng Duce 1976 CZ · Oliver Springs, TN · April 15, 2017

Accident · Minor injuriesData collectionFinal report
Date
April 15, 2017, 15:25 local (19:25 UTC)
Place
Oliver Springs, TN
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N122BDZeiler Bakeng Duce 1976 CZ
Defining event
Landing: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report June 20, 2017
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20170415008459A
Case key
95017

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 unstabilized approach and failure to go around, which resulted in impact with trees.

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: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedZeiler BAKENG DUCE 1976-CZ: 1 caseAll aircraft: 809 casesProbable cause
Action: lack of actionPersonnel issues › Action/decision · PilotZeiler BAKENG DUCE 1976-CZ: 1 caseAll aircraft: 792 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Contributed to outcomeZeiler BAKENG DUCE 1976-CZ: 1 caseAll aircraft: 933 cases

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, during approach, while flying from the rear seat of the tandem-seat, high-wing airplane, he "needed to lose speed and altitude." He placed the airplane in a right-wing-low, forward slip, and he added that the airplane had poor forward visibility at slower speeds. He aligned the airplane with the center of the runway and "pulled the nose up slightly to slow [down]," and a "wind gust" came from the right and "pushed" the airplane over the trees. He "saw [the] tree tops coming up fast under [his] left wing," and "out of shear instinct, [he] banked slightly right to avoid going in nose first." The airplane collided with the tree tops. The airplane sustained substantial damage to both wings and the empennage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The automated weather observation system about 3 nautical miles from the accident site, about the time of the accident, reported that the wind was variable at 3 knots. The pilot landed to the southwest.

Factual narrative

The pilot reported that during approach, while flying from the rear seat of the tandem seat, high-wing airplane, he "needed to lose speed and altitude". He placed the airplane in a right-wing low, forward slip, and he added that the airplane had poor forward visibility at slower speeds. He aligned the airplane with the center of the runway and "pulled the nose up slightly to slow [down]," and a "wind gust" came from the right and "pushed" the airplane over the trees. He "saw [the] tree tops coming up fast under [his] left wing", and "out of shear instinct, [he] banked slightly right to avoid going in nose first". The airplane collided with the tree tops. The airplane sustained substantial damage to both wings and the empennage. The pilot reported that there were no pre-accident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The automated weather observation system about 3 nautical miles from the accident site, about the time of the accident, reported the wind variable at 3 knots. The pilot landed to the southwest.

Aircraft

Registration
N122BD
Reported as
Zeiler Bakeng Duce 1976 CZ (NO SERIES)
Category
Airplane, amateur-built
Serial number
1776-CZ
Built
1982
Airframe hours
787.5
Engine
Lycoming O-290, 125 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · August 9, 2016
Departed
BYL · Williamsburg, KY
Destination
Oliver Springs, TN
Equipment
Handheld GPS

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
40
Injuries
Minor
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Without waivers/limitations
Last flight review
April 22, 2016
Seat
Rear
Restraint
4-point
Flight hours
277 total · 27 in this make and model · 245 as pilot in command · 3 in the last 90 days · 3 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 3 knots
Visibility
10 statute miles
Lowest ceiling
9,500 ft broken
Temperature
79 °F, dew point 52 °F
Altimeter
30.25 inHg
Observed at
KOQT, 3 nm away

Docket · 2

The files NTSB released with the investigation on May 30, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.5 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.