CHI99LA099

NTSB accident investigation · Calkins Kitfox 5 · Waunakee, WI · March 1, 1999

Accident · No injuriesLimited investigationFinal report
Date
March 1, 1999, 17:10 local (23:10 UTC)
Place
Waunakee, WI
Injuries
2 uninjured
Damage
Destroyed
Phase of flight
Approach
Aircraft
N394GLCalkins Kitfox 5
Weather
Visual (VMC) · Day
Status
Completed · report May 12, 2000
Report
Approved by Office Director
FAA report
19990301001889A
Case key
45846

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 fracture of the trim actuator.

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/malfunctionApproach
Flt control syst,elevator trim/tab control - fracturedCause
Loss of control - in flightApproach
Hard landingDescent - uncontrolled

Analysis

As the airplane was turning base to final the pilot, 'felt a bump and vibration in the control stick...' when he commanded a final nose-up trim adjustment. The pilot reported that the remainder of the approach to the runway was uneventful. The pilot stated that, 'When I went to flare for the landing I did not have any pitch control.' The pilot reported that the airplane landed very hard and bounced back into the air in a nose high orientation. The pilot reported that during the hard landing the seat broke from its mounts and fell onto the flaperon control tube, inhibiting flaperon actuation. The pilot stated that the airplane then 'Stalled', landed tail first on the runway, ground looped, and came to rest with the right wingtip and the tail touching the ground. Post accident examination of the aircraft showed that the trim actuator was fractured at its attachment point to the airframe.

Factual narrative

On March 1, 1999, at 1710 central standard time (CST), a Calkins Kitfox 5, N394GL, piloted by a commercial pilot, was destroyed during a hard landing and subsequent ground loop at the Waunakee Airport, near Waunakee, Wisconsin. Visual meteorological conditions prevailed at the time of the accident. The personal flight was operating under the provisions of 14 CFR Part 91. The flight was not operating on a flight plan. The pilot-in-command and pilot-rated passenger reported no injuries. The flight departed Waunakee Airport at 1630 CST for a local flight.

According to the pilot-in-command's written statement, as the airplane was turning base to final the pilot, "felt a bump and vibration in the control stick..." when he commanded a final nose-up trim adjustment. The pilot reported that the remainder of the approach to the runway was uneventful. The pilot stated that, "When I went to flare for the landing I did not have any pitch control." The pilot reported that the airplane landed very hard and bounced back into the air in a nose high orientation. The pilot reported that during the hard landing the seat broke from its mounts and fell onto the flaperon control tube, inhibiting flaperon actuation. The pilot stated that the airplane then "Stalled", landed tail first on the runway, ground looped, and came to rest with the right wingtip and the tail touching the ground.

Post accident inspection of the aircraft showed that the trim actuator was fractured at its attachment point to the airframe.

Aircraft

Registration
N394GL
Reported as
Calkins Kitfox 5
Category
Airplane, amateur-built
Serial number
59404-0021
Airframe hours
104
Engine
Subaru EA81 SHO, 118 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Gene M. Calkins
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · June 30, 1998 · 34 hours before
Departed
WI06
Airport
WI06 · Waunakee Airport, runway 27, 2,230 × 30 ft, asphalt

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
53
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
1,394 total · 105 in this make and model · 1,226 as pilot in command · 8 in the last 90 days · 3 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 4 knots
Lowest ceiling
8,000 ft broken
Temperature
41 °F, dew point 23 °F
Altimeter
29.00 inHg
Observed at
MSN, 6 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.