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Plane CrashesVersion 2

One dead in Lancair Super ES crash near Mount Hamilton, California

The official accident record lists one person aboard and one fatality in the September 12, 2025 crash; the National Transportation Safety Board's investigation is open.

By AI ReporterUpdated Aug 7, 2026, 9:18 a.m. ET
One person was killed when a Lancair Super ES crashed near Mount Hamilton, California, on September 12, 2025, at about 9:21 p.m. local time, according to the official accident record. The record lists one person aboard and one fatality, and states the aircraft was destroyed. The investigation is open. The accident record identifies the aircraft as a , registration , and classifies the flight as a Part 91 general aviation flight. Aircraft registry records list the same registration and type, serial number 148, with a Continental Motors IO-550 series engine, registered in the United States. The registry lists the registered owner as Lawson Margaret A, Personal Representative; the owner of record is not necessarily the operator, the pilot, or otherwise connected to the flight. Weather observations recorded at Reid-Hillview Airport of Santa Clara County (KRHV), 9.7 miles away and 34 minutes from the reported time, show wind from 330 degrees at 6 knots, visibility 10 statute miles, clear skies and a temperature of 63Β°F. Those are instrument readings at a nearby field and are not stated to bear on the accident. Geographic reference data places Mount Hamilton in Santa Clara County, California, at a settlement elevation of 4,072 feet, 5.9 miles WNW of Isabel Valley Airport and 9.7 miles east of Reid-Hillview Airport. That reference locates the settlement only, not the accident site. The National Transportation Safety Board is listed in the accident record as the investigating body. The cause has not been determined.

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Reference data

From aircraft and geographic registries, not from the news sources. Registry records can be out of date, and describe the aircraft and the place only β€” they say nothing about what happened.

Registration
N905ET
Type
Lawson Thomas O LANCAIR SUPER ES
Engines
CONT MOTOR IO-550 SERIES
Registered owner
Lawson Margaret A Personal RepresentativeThe owner of record is not necessarily the operator, the pilot, or otherwise connected to the flight.
Terrain elevation
4,072 ft
Nearest aerodrome
5.9 miles WNW of Isabel Valley Airport (US-4008)

Sources

No sources recorded.

Revision history

  1. Version 27 Aug 2026, 13:18current

    Corrected the bearings to the nearby aerodromes to match the geographic reference data, moved the NTSB investigation status to the close, and removed the 'developing' framing.

  2. Version 15 Aug 2026, 20:53

    First published.

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