MIA90LA103

NTSB accident investigation · Swing Velocity RG · Wimauma, FL · April 11, 1990

Accident · No injuriesLimited investigationFinal report
Date
April 11, 1990, 11:05 local (15:05 UTC)
Place
Wimauma, FL
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N125VSwing Velocity RG
Weather
Visual (VMC) · Day
Status
Completed · report September 10, 1992
Report
Approved by Office Director
FAA report
19900411011939A
Case key
32646

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

Delamination of a portion of one of the wooden propeller blades at a knot, resulting in severe vibration and necessitating a forced landing.

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
Propeller system/accessories,blade - delaminationCause
Forced landingDescent - emergency
Terrain condition - none suitable
Nose overLanding - roll

Analysis

The plt stated that during cruise flt, he felt a severe vibration from the rear of the acft (the acft was a pusher type). He secured the eng. After touchdown in a field during the forced landing, the acft rolled inverted & came to rest. Exam of the acft revealed that a portion of one propeller blade delaminated at a knot.

Aircraft

Registration
N125V
Reported as
Swing Velocity RG (VELOCITY R)
Category
Airplane, amateur-built
Serial number
DM-074
Airframe hours
115
Engine
Lycoming IO-360, 200 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Swing, Brian S.
Registered owner
Swing, Brian S
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · April 5, 1990 · 15 hours before
Departed
LAL · Lakeland, FL

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
31
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
707 total · 70 in this make and model · 650 as pilot in command · 14 in the last 90 days · 6 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 8 knots
Visibility
12 statute miles
Lowest ceiling
4,000 ft broken
Temperature
79 °F, dew point 70 °F
Altimeter
30.00 inHg
Observed at
LAL, 25 nm away

FAA reports on this event · 1

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