CEN12LA047

NTSB accident investigation · Saber Trike unk · Okmulgee, OK · October 15, 2011

Accident · Serious injuriesLimited investigationFinal report
Date
October 14, 2011, 19:15 local (Oct 15, 2011, 00:15 UTC)
Place
Okmulgee, OK
Injuries
1 serious, 1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
UNREGSaber Trike unk
Defining event
Enroute: Unknown or undetermined
Weather
Visual (VMC) · Day
Status
Completed · report March 28, 2012
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA FSDO
Case key
82217

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 in-flight collision with electrical wires for undetermined reasons.

Findings · 2

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.

Not determinedNot determined › Not determined · Unknown/Not determinedAll aircraft: 2,247 casesProbable cause
Object/animal/substance: wireEnvironmental issues › Physical environment · Effect on operationAll aircraft: 588 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

A non-certificated pilot was flying a weight-shift control airplane, and he reported that he had developed “mechanical problems” and was going to fly under a set of electrical wires to land in a vacant lot; the airplane impacted the wires and terrain. The pilot added that, prior to the accident flight, he had landed due to a fuel problem, repaired the problem, and departed. The pilot died about two weeks after the accident, in a manner unrelated to the accident. Circumstances surrounding the pilot’s death precluded a detailed examination of the airplane and engine.

Factual narrative

On October 14, 2011, about 1915 central daylight time, an unregistered Sabre weight-shift, “Trike” aircraft, impacted terrain following an in-flight collision with electrical wires near Okmulgee, Oklahoma. The non-certificated pilot received serious injuries and the passenger received minor injuries. The aircraft was substantially damaged during the accident. The aircraft was owned and operated by a private individual under the provisions of 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed for the flight, which operated without a visual flight rules flight plan. According to the responding department of public safety trooper, the pilot reported that he had a previous fuel problem. The pilot added that he landed and repaired the problem and departed. Again the pilot added, that he “experienced mechanical problems” and elected to land underneath a set of electrical wires, in order to land in a vacant lot. During the landing, the aircraft impacted the electrical wires and subsequently impacted terrain. A small post-impact fire was quickly extinguished. Electrical burn marks were found on the aircraft mast and hand controls. In addition the mast and wing spar were broken during the accident. The pilot was released from the hospital shortly after the accident; however, the pilot died about 2 weeks after the accident. The medical examiner did not find evidence linking the aircraft accident to the pilot’s subsequent death. Circumstances surrounding the pilot’s death precluded a detailed examination of the aircraft and engine.

Aircraft

Registration
UNREG
Reported as
Saber Trike unk
Category
Weight-shift
Engine
Rotax, reciprocating
Damage
Substantial damage
Fire
On-Ground
Flight
Personal · Part 91
Airworthiness certificate
Unknown
Departed
Okmulgee, OK
Destination
Okmulgee, OK
Flight plan
Unknown

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
54
Injuries
Serious
Flight hours
9,999 total

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
46 °F, dew point 43 °F
Altimeter
29.94 inHg
Observed at
KOKM, 11 nm away

Docket · 4

The files NTSB released with the investigation on January 19, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 6.9 MB in all.