WPR23LA326

NTSB accident investigation · Henry Steven J JA 30 Superstol · Leavenworth, WA · August 28, 2023

Accident · No injuriesClass 4 · LimitedFinal report
Date
August 28, 2023, 10:15 local (17:15 UTC)
Place
Leavenworth, WA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N869BBHenry Steven J JA 30 Superstol
Defining event
Taxi: Nose over/nose down
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Western Pacific Region
Parties
FAA
FAA report
20230828013059A
Case key
192955

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot's failure to maintain airplane control during taxi, which resulted in a 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.

Runway/land/takeoff/taxi surface: choppy surfaceEnvironmental issues › Physical environment · Response/compensationHenry Steven J JA 30 SUPERSTOL: 1 caseAll aircraft: 20 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 of the tailwheel-equipped airplane reported that, while taxiing for takeoff on a gravel bar, he encountered a slope. To prevent potential loss of control, he applied brake pressure to both wheels, causing the airplane to nose over, resulting in substantial damage to the rudder. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N869BB
Reported as
Henry Steven J JA 30 Superstol
Category
Airplane, amateur-built
Serial number
JA366-04-14
Built
2015
Airframe hours
479
Engine
Rotax 915IS, 141 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Unknown · June 25, 2023 · 105 hours before
Destination
Same as departure
Airport
27W · Lake Wenatchee State
Equipment
Handheld GPS, Electronic primary flight display, Electronic multifunction display, Electronic flight bag or handheld device

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
47
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Last flight review
June 7, 2021
Seat
Left
Restraint
4-point
Flight hours
286 total · 230 in this make and model · 230 as pilot in command · 84 in the last 90 days · 84 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 52 °F
Altimeter
30.05 inHg
Observed at
KEAT, 32 nm away
METAR
KEAT 281755Z AUTO 26004KT 10SM CLR 26/11 A3005 RMK AO2 SLP164 T02610106 10261 20194 58004

Docket · 2

The files NTSB released with the investigation on December 7, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.4 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.