CHI89DEC08

NTSB accident investigation · Wesley Striplin Ranger · Smith Creek, MI · September 18, 1989

Accident · FatalFinal report
Date
September 18, 1989, 10:40 local (15:40 UTC)
Place
Smith Creek, MI
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N46WWWesley Striplin Ranger
Weather
Visual (VMC) · Day
Status
Completed · report June 30, 1992
Report
Approved by Office Director
FAA report
19890918035299A
Case key
14181

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 improper installation of the wingtip fuel tank which resulted in its inflight separation and the subsequent loss of control.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Airframe/component/system failure/malfunctionCruise - normal
Wing,wingtip - failure,totalCause
Maintenance,installation - improperPilot in commandCause
Fuel system,tank - separationCause
Loss of control - in flightCruise - normal
Aircraft control - not maintainedPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

Witnesses reported seeing something hanging from the left wing of the airplane along with fuel coming from the left wing. Shortly thereafter, the airplane entered a left diving turn and impacted the terrain in a steep nose down attitude. Examination revealed the left wingtip fuel tank was missing and it was not located. The left wing inboard tank was located approximately 100 ft from the main wreckage. Three flight hours prior to the accident, the left aileron was repaired due to delamination of the skin. The kit manufacturer stated the wingtip tanks should be attached with 6 screws, large washers and nut plates. Reportedly, the wingtip tanks were attached with 4 screws and nut plates with no washers.

Aircraft

Registration
N46WW
Reported as
Wesley Striplin Ranger (STRIPLIN R)
Category
Airplane, amateur-built
Serial number
87047
Engine
Rotax 532LC, 65 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
William W. Wesley, Sr.
Airworthiness certificate
Special, Experimental (Special)
Departed
PHN · Port Huron, MI
Destination
PHN · Port Huron, 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
71
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
1,280 total

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 1 knots
Lowest ceiling
None
Temperature
61 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.