CEN09CA338

NTSB accident investigation · Garrett Rans S-6ES · Williamsburg, MI · June 5, 2009

Accident · Minor injuriesData collectionFinal report
Date
June 5, 2009, 14:25 local (18:25 UTC)
Place
Williamsburg, MI
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N213KTGarrett Rans S-6ES
Defining event
Enroute-cruise: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed · report October 19, 2009
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA - Grand Rapids FSDO
FAA report
20090605011259A
Case key
73968

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/builder's improper installation of the fuel line cable-tie, which resulted in fuel starvation and the loss of engine power.

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.

Maintenance: installationPersonnel issues › Task performance · Owner/builderGarrett Donald W RANS S-6ES: 1 caseAll aircraft: 371 casesProbable cause
Fuel system: fuel distributionAircraft › Aircraft systems · Incorrect service/maintenanceGarrett Donald W RANS S-6ES: 1 caseAll aircraft: 141 casesProbable cause
Fuel system: fuel distributionAircraft › Aircraft systems · Damaged/degradedGarrett Donald W RANS S-6ES: 1 caseAll aircraft: 141 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Contributed to outcomeGarrett Donald W RANS S-6ES: 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 amateur-built airplane departed on the cross-country flight with 12 gallons of fuel. The left and right wing tanks contained 5 and 7 gallons of fuel, respectively. The outbound flight leg was completed without any reported problems. The pilot did not refuel before departing on the return flight. On the return flight, about 8 miles from the destination airport, the airplane experienced a total loss of engine power. The pilot was unable restart the engine and subsequently performed a forced landing into a forest clearing. The outboard half of the left wing was damaged during the landing when it impacted a tree. After the accident, the right fuel tank still contained 7 gallons of fuel. The left fuel tank was void of any usable fuel. Examination of the fuel tanks did not reveal any ruptures or breaches of any kind. The airplane was not equipped with a fuel tank selector. The output fuel lines for the right and left fuel tanks fed into a T-fitting which combined the fuel flow into a single line that serviced the engine. The output fuel lines from each tank were secured to airframe structural tubing with nylon cable-ties. The output fuel line from the right tank was pinched closed where one of the cable-ties was installed, restricting the fuel flow from the right tank. According to the pilot/builder, he finished installing wingtip navigation and strobe lights about 1.4 hours flight time before the accident. During the light installation, he routed and secured the associated electrical wiring in the same area as the fuel tank output lines. The pilot/builder stated that he may have tightened the fuel line cable-tie while he installed the navigation/strobe lights.

Factual narrative

The amateur-built airplane departed on the cross-country flight with 12 gallons of fuel. The left and right wing tanks contained 5 and 7 gallons of fuel, respectively. The outbound flight leg was completed without any reported problems. The pilot did not refuel before departing on the return flight. On the return flight, about 8 miles from the destination airport, the airplane experienced a total loss of engine power. The pilot was unable restart the engine and subsequently performed a forced landing into a forest clearing. The outboard half of the left wing was damaged during the landing when it impacted a tree. After the accident, the right fuel tank still contained 7 gallons of fuel. The left fuel tank was void of any usable fuel. Examination of the fuel tanks did not reveal any ruptures or breaches of any kind. The airplane was not equipped with a fuel tank selector. The output fuel lines for the right and left fuel tanks fed into a T-fitting which combined the fuel flow into a single line that serviced the engine. The output fuel lines from each tank were secured to airframe structural tubing with nylon cable-ties. The output fuel line from the right tank was pinched closed where one of the cable-ties was installed, restricting the fuel flow from the right tank. According to the pilot/builder, he finished installing wingtip navigation and strobe lights about 1.4 hours flight time before the accident. During the light installation, he routed and secured the associated electrical wiring in the same area as the fuel tank output lines. The pilot/builder stated that he may have tightened the fuel line cable-tie while he installed the navigation/strobe lights.

Aircraft

Registration
N213KT
Reported as
Garrett Rans S-6ES
Category
Airplane, amateur-built
Serial number
07041600
Airframe hours
82
Engine
Rotax 912 ULS, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · September 2, 2008
Departed
KHTL · Houghton Lake, MI
Destination
KTVC · Traverse City, MI

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
82
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
October 31, 2008
Seat
Left
Flight hours
1,951 total · 92 in this make and model · 1,835 as pilot in command · 27 in the last 90 days · 10 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 10 knots, gusting 20
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 37 °F
Altimeter
29.78 inHg
Observed at
KTVC, 8 nm away

Docket · 6

The files NTSB released with the investigation on August 19, 2009, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.1 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.