WPR14CA022

NTSB accident investigation · Collins Zenith Stol CH 701 · Deer Park, WA · October 19, 2013

Accident · No injuriesData collectionFinal report
Date
October 19, 2013, 13:00 local (20:00 UTC)
Place
Deer Park, WA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N2849CCollins Zenith Stol CH 701
Defining event
Landing-flare/touchdown: Abnormal runway contact
Weather
Visual (VMC) · Day
Status
Completed · report April 1, 2014
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
FAA
Case key
88250

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 pilot's inadequate flare and failure to maintain control of the airplane during the landing with a tailwind.

Findings · 3

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.

Performance/control parameters: landing flareAircraft › Aircraft oper/perf/capability · Not attained/maintainedCollins Arthur F ZENITH STOL CH 701: 1 caseAll aircraft: 1,285 casesProbable cause
Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Effect on equipmentCollins Arthur F ZENITH STOL CH 701: 1 caseAll aircraft: 594 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 pilot stated that during the landing flare, the airplane encountered a tailwind that caused the airplane to rapidly descend and land hard. The airplane touched down on all three wheels and then began to encounter pitch oscillations that caused the nose wheel to collapse. Subsequently the airplane nosed over which resulted in substantial damage to both wings. The pilot reported no preexisting mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

The pilot stated that during the landing flare, the airplane encountered a tailwind that caused the airplane to rapidly descend and land hard. The airplane touched down on all three wheels and then began to encounter pitch oscillations that caused the nose wheel to collapse. Subsequently the airplane nosed over which resulted in substantial damage to both wings. The pilot reported no preexisting mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N2849C
Reported as
Collins Zenith Stol CH 701 (NO SERIES)
Category
Airplane, amateur-built
Serial number
7084
Built
2010
Airframe hours
20
Engine
Great Plains Type I, 103 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special); Special, Experimental light sport (Special)
Last inspection
Annual · December 16, 2012
Departed
DEW · Deer Park, WA
Destination
DEW · Deer Park, WA
Airport
DEW · Deer Park, runway 22, 1,800 × 60 ft, grass/turf

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
64
Injuries
None
Certificate
Sport Pilot
Airplane ratings
Single-engine land
Medical
Sport pilot, Unknown
Last flight review
October 27, 2011
Seat
Left
Restraint
3-point
Flight hours
71.1 total · 24.6 in this make and model · 23.7 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
190° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
54 °F, dew point 37 °F
Altimeter
30.12 inHg
Observed at
DEW

Docket · 1

The files NTSB released with the investigation on March 28, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.2 MB in all.