CEN18LA274

NTSB accident investigation · Cessna 150 · Lakeview, AR · July 12, 2018

Accident · Serious injuriesLimited investigationFinal report
Date
July 11, 2018, 20:30 local (Jul 12, 2018, 01:30 UTC)
Place
Lakeview, AR
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N50183Cessna 150
Defining event
Takeoff: Collision during takeoff/land
Weather
Visual (VMC) · Day
Status
Completed · report September 14, 2020
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Little Rock FSDO, Continental Motors
FAA report
20180711010879A
Case key
97801

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 student pilot’s impairment by alcohol and multiple medications, which led to his failure to maintain obstacle clearance during takeoff and the subsequent exceedance of the airplane’s critical angle of attack, which resulted in an aerodynamic stall and impact with terrain.

Findings · 9

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.

Attention/monitoring: monitoring environmentPersonnel issues › Psychological · Student/instructed pilotCessna 150H: 1 caseAll aircraft: 809 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · Student/instructed pilotCessna 150H: 19 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: angle of attackAircraft › Aircraft oper/perf/capability · Capability exceededCessna 150H: 4 casesAll aircraft: 990 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 150H: 9 casesAll aircraft: 3,958 casesProbable cause
Health/Fitness: use of medication/drugsPersonnel issues › Physical · Student/instructed pilotCessna 150H: 1 caseAll aircraft: 73 casesProbable cause
Health/Fitness: use of alcoholPersonnel issues › Physical · Student/instructed pilotCessna 150H: 1 caseAll aircraft: 4 casesProbable cause
Impairment/incapacitation: alcoholPersonnel issues › Physical · Student/instructed pilotCessna 150H: 1 caseAll aircraft: 87 casesProbable cause
Impairment/incapacitation: prescription medicationPersonnel issues › Physical · Student/instructed pilotCessna 150H: 1 caseAll aircraft: 77 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Contributed to outcomeCessna 150H: 4 casesAll 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 student pilot reported that after takeoff from the grass airstrip, the left wing impacted a tree branch. He overcorrected from the impact and stalled the airplane. The airplane impacted a grass clearing and came to rest inverted near trees, which resulted in substantial damage to the fuselage, both wings, and the empennage. Although his blood alcohol level was not tested after the accident, the student pilot stated that he drank alcohol during the afternoon of the flight. In addition, he admitted to taking baclofen and bupropion, which are both potentially impairing medications that carry specific warnings about increased impairing effects when used in combination with alcohol. It is likely the pilot was impaired by his use of a combination of alcohol, baclofen, and bupropion and that these effects likely increased his willingness to fly while impaired and prevented him from safely taking off.

Factual narrative

On July 11, 2018, about 2030 central daylight time, a Cessna 150H, N50183, sustained substantial damage when it was involved in an accident near Lakeview, Arkansas. The student pilot sustained serious injuries. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The student pilot reported that after takeoff from the grass airstrip at the resort, the left wing impacted a tree branch. The student pilot overcorrected from the impact and aerodynamically stalled the airplane. The airplane impacted a grass clearing and came to rest inverted near trees. The student pilot was extracted from the wreckage and transported via an air ambulance helicopter to a hospital for medical treatment. The student pilot did not report any preimpact mechanical malfunctions or failures with the airframe and engine that would have precluded normal operation. The airplane sustained substantial damage to the fuselage, both wings, and the empennage. A witness reported that prior to the accident, she observed the student pilot with a white cup and the student pilot reported to the witness that the cup had a margarita in it. She further reported that she observed him about three times at the resort with two cups "every time." The student pilot invited the witness for a ride in his airplane, but she declined. About five minutes later, she heard the accident and she observed "all the cups" at the accident site. Local law enforcement found liquid believed to be alcohol in a white cup in the wreckage. The student pilot had reported no chronic medical conditions and only the use of finasteride to the Federal Aviation Administration. After the accident, he reported to his health care providers that he had muscle spasms, major depression, hypertension, and was taking baclofen, bupropion, a combination tablet of lisinopril and hydrochlorothiazide, as well as finasteride to treat these conditions. In addition, he admitted that he drank alcohol during the afternoon before the flight. The student pilot refused a blood draw from law enforcement and no clinical toxicology test was performed. The student pilot did not submit the National Transportation Safety Board Pilot/Operator Aircraft Accident/Incident Report Form 6120.1.

Aircraft

Registration
N50183
Reported as
Cessna 150 (H)
Category
Airplane
Serial number
15069114
Built
1968
Engine
Continental O-200 Series, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Departed
3M0 · Lakeview, AR
Destination
3M0 · Lakeview, AR
Airport
3M0 · Gastons, runway 24, 3,200 × 55 ft, grass/turf

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
Student pilot
Age
38
Injuries
Serious
Certificate
Student
Medical
Class 3, Without waivers/limitations
Seat
Left
Flight hours
110 total

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 3 knots
Visibility
10 statute miles
Lowest ceiling
8,000 ft overcast
Temperature
88 °F, dew point 66 °F
Altimeter
30.01 inHg
Observed at
KBPK, 4 nm away

Docket · 5

The files NTSB released with the investigation on June 18, 2020, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.2 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.