GAA19CA396

NTSB accident investigation · Donald Bernard Higgs Pietenpol · Anacortes, WA · July 7, 2019

Accident · No injuriesData collectionFinal report
Date
July 6, 2019, 17:00 local (Jul 7, 2019, 00:00 UTC)
Place
Anacortes, WA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N7169KDonald Bernard Higgs Pietenpol
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report April 13, 2020
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20190706010499A
Case key
99802

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 failure of the left main landing gear attachment point during the landing roll for reasons that could not be determined because the attachment was not examined, which resulted in a loss of directional control, collision with a drainage culvert, and a subsequent nose-over.

Findings · 2

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.

Landing gear system: main landing gear attach secAircraft › Aircraft systems · FailureAll aircraft: 66 casesProbable cause
Object/animal/substanceEnvironmental issues › Physical environment · Effect on equipmentAll aircraft: 224 casesProbable cause

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 reported that this was the first test flight after the experimental, amateur-built airplane had been reassembled following purchase and transport. The pilot performed two high-speed taxi runs, he back taxied, and then he took off. During the landing roll, "the left front landing gear attachment lugs broke off the mount fitting." The pilot lost directional control of the airplane, and it ground looped to the right. The airplane entered a ditch and nosed over. The airplane sustained substantial damage to the left-wing aft lift strut. The left main landing gear attachment was not examined; therefore, the reason for its failure could not be determined.

Factual narrative

The pilot in the experimental amateur-built, tailwheel equipped airplane reported that, this was the first test flight after the airplane had been reassembled following purchase and transport. The pilot performed two high-speed taxi runs, he back taxied and subsequently took off. During the landing roll, "the left front landing gear attachment lugs broke off the mount fitting." The pilot lost directional control of the airplane and ground-looped to the right. The airplane entered a ditch and nosed over. The airplane sustained substantial damage to the left wing aft lift strut.

Aircraft

Registration
N7169K
Reported as
Donald Bernard Higgs Pietenpol
Category
Airplane, amateur-built
Serial number
1
Built
1991
Airframe hours
90.5
Engine
Ford Model B, 50 horsepower, reciprocating
Damage
Substantial damage
Flight
Flight test · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · July 2, 2019
Departed
74S · Anacortes, WA
Destination
74S · Anacortes, WA
Airport
74S · Anacortes, runway 18, 3,015 × 60 ft, asphalt
Equipment
Electronic flight bag or handheld device

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
78
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Sport pilot, With waivers/limitations
Last flight review
April 27, 2017
Seat
Single
Restraint
4-point
Flight hours
4,775 total · 35 in this make and model · 4,775 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
3,300 ft broken
Temperature
64 °F, dew point 54 °F
Observed at
KNUW, 9 nm away

Docket · 2

The files NTSB released with the investigation on December 5, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.7 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.