WPR26LA368

NTSB accident investigation · Gronberger Sergio A Sportsman GS-2 · Lake Goodwin, WA · September 30, 2026

Accident · No injuriesClass 4 · LimitedInvestigation open
Date
September 30, 2026, 13:20 local (20:20 UTC)
Place
Lake Goodwin, WA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N360ETGronberger Sergio A Sportsman GS-2
Defining event
Landing-flare/touchdown: Hard landing
Status
Investigation ongoing
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Western Pacific Region
Parties
FAA SEA FSDO
Case key
203946

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

On this page

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.

Aircraft

Registration
N360ET
Reported as
Gronberger Sergio A Sportsman GS-2
Category
Airplane
Serial number
0007505
Built
2023
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Gronberger Sergio A
Registered owner
Gronberger Sergio A

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.