CEN16LA004

NTSB accident investigation · Cessna 150 · Dexter, MO · October 5, 2015

Accident · Serious injuriesLimited investigationFinal report
Date
October 5, 2015, 04:30 local (09:30 UTC)
Place
Dexter, MO
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N3174JCessna 150
Defining event
Maneuvering: Fuel exhaustion
Weather
Visual (VMC) · Night
Status
Completed · report March 5, 2018
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA St Louis FSDO
FAA report
20151005017409A
Case key
92118

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 impairment due to the ingestion of alcohol, which impaired his decision-making and resulted in his taking off and flying the airplane until the engine lost power due to fuel exhaustion.

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.

Impairment/incapacitation: alcoholPersonnel issues › Physical · PilotCessna 150G: 1 caseAll aircraft: 87 casesProbable cause
Fluids: fuelAircraft › Fluids/misc hardware · Fluid levelCessna 150G: 9 casesAll aircraft: 1,695 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Contributed to outcomeCessna 150G: 3 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 private pilot was flying the airplane on a local night flight; the airplane was subsequently located in a heavily wooded area, and it had impacted trees, brush, and terrain and come to rest upright. The pilot reported that he had no recollection of the accident. The pilot did recall waking up inside the airplane after the accident and that it was dark outside and that the weather was not an issue. An examination of the airplane revealed that there was no fuel in either wing fuel tank, and no evidence of fuel was found around the accident site. Examination of the airplane, engine, and systems revealed no evidence of any preimpact anomalies that would have precluded normal operation. Analysis of the pilot's blood and urine samples revealed that he had a blood alcohol level of 0.075% 3 hours after the accident. Based on the elimination rate of alcohol from the system, his blood alcohol level would have been between about 0.11% and 0.13% at the time of the accident, which would have impaired his decision-making abilities and psychomotor performance. Marijuana was detected in urine; however, confirmation testing was not performed, so the investigation was unable to determine if the pilot's use of marijuana before the flight enhanced his impairment or contributed to the accident. It is likely that alcohol ingestion impaired the pilot's decision-making abilities and led to his taking off and flying the airplane until the engine lost power due to fuel exhaustion.

Factual narrative

On October 5, 2015, about 0430 central daylight time, a Cessna 150G, single-engine airplane, N3174J, impacted trees and terrain about two miles west from Dexter Municipal Airport (DXE), Dexter, Missouri. The pilot was seriously injured, and the airplane was substantially damaged. The airplane was registered to and operated by a private individual, as a 14 Code of Federal Regulations Part 91 personal flight. Night visual meteorological conditions (VMC) prevailed and a flight plan had not been filed for the local flight that departed about 0400 from DXE.The pilot stated he had no recollection of the events prior to the accident. He recalled waking up inside the airplane after it impacted trees and brush. It was dark outside. The pilot added he was an early riser and guessed he intended to perform some night flying and see the sun rise. The pilot later told a Federal Aviation Administration (FAA) inspector that he recalled leveling at 1,500 to 1,600 ft. and that he flew for about 30 minutes before his airplane fell "from the sky." He said weather was not an issue. The airplane impacted in a heavily wooded area and came to rest upright. Several large tree branches surrounded the airplane. The left wing tip was buckled aft and the right wing was bent upward about 20 degrees at the wing root. Both wings' leading edges were crushed aft. Both fuel tanks showed no fuel present. There was no evidence of fuel around the accident site. The forward and bottom fuselage, and engine cowling were crushed upward and broken aft. The propeller spinner showed a C-shaped dent in one side. One of the two propeller blades sustained minor damage and the other blade was bent aft near the blade tip. Flight control continuity was confirmed. No anomalies were found with the airplane's engine or systems. Toxicology testing by the (FAA) Civil Aeromedical Institute of specimens from the pilot revealed the following: 103 mg/dL, mg/hg Ethanol detected in urine. 30 mg/dL, mg/hg Ethanol detected in blood 1.784 ug/ml, ug/g Morphine detected in urine Tetrahydrocannabinol Carboxylic Acid (Marijuana) detected in urine The Missouri State Highway Patrol Crime laboratory analyzed a blood sample from the pilot three hours after the accident occurred. The test showed a blood alcohol of 0.075%. Hospital testing of a blood sample from the pilot about 5 hours after the accident showed a blood alcohol of 0.034%. Additionally, hospital urine drug screening was positive for cannabinoids, but confirmation testing was not performed. Per 14 CFR 91.17, no person may act or attempt to act as a crewmember of a civil aircraft while having 0.04% (0.040 g/dL) or more alcohol in the blood.

Aircraft

Registration
N3174J
Reported as
Cessna 150 (G)
Category
Airplane
Serial number
15065874
Built
1966
Airframe hours
2,412
Engine
Continental O-200-A, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal; Standard, Utility
Last inspection
Annual · July 29, 2015 · 2 hours before
Departed
DXE · Dexter, MO
Destination
DXE · Dexter, MO
Airport
DXE · Dexter Muni
Equipment
Stall warning system

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
60
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Unknown
Seat
Left
Restraint
Lap only
Toxicology
Performed
Flight hours
400 total · 100 in this make and model

Weather

Conditions
Visual (VMC) · Night
Wind
350° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
54 °F, dew point 52 °F
Altimeter
30.02 inHg
Observed at
KPOF, 17 nm away

Docket · 7

The files NTSB released with the investigation on January 8, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.2 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.