Casualties unknown

Private Pilot Collides with Frozen Lake After Encountering Whiteout Conditions (N9737G)

Port Alsworth, AK, US

On March 8, 1993, a Cessna 180H (registration N9737G) operated by Hornberger, Charles G. was involved in an aviation accident near Port Alsworth, AK. Investigators recorded the probable cause as: THE NON INSTRUMENT RATED PILOT IN COMMAND ENTERING INSTRUMENT METEOROLOGICAL CONDITIONS. A FACTOR IN THE ACCIDENT WAS THE SNOW/WHITEOUT CONDITION. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards

A non-instrument rated private pilot reported entering whiteout conditions from blowing snow shortly after takeoff, leading to an unintentional descent and collision with a frozen lake.

Accident Overview

A non-instrument rated private pilot was involved in an accident shortly after becoming airborne. The pilot reported that he encountered whiteout conditions caused by blowing snow soon after takeoff. Under these conditions, the pilot unintentionally allowed the airplane to descend, resulting in a collision with the frozen surface of a lake.

Pilot Report

According to the pilot, the whiteout conditions disoriented him, leading to the loss of control over the aircraft's altitude. The pilot further stated that he did not have a current biennial flight review (BFR) nor a valid flight medical certificate. Additionally, the pilot reported that he did not recall having received instruction on how to execute a 180-degree change of direction turn using only basic (partial panel) flight instruments.

Investigation Findings

The investigation noted the pilot's lack of an instrument rating and the absence of current flight review and medical certification. The pilot's inability to recall training on partial panel maneuvers was also documented. No other contributing factors were identified in the source material.

Frequently asked questions

What happened in the 8 Mar 1993 Cessna 180H accident near Port Alsworth, AK?

A non-instrument rated private pilot reported entering whiteout conditions from blowing snow shortly after takeoff, leading to an unintentional descent and collision with a frozen lake.

What aircraft was involved and where did it happen?

The accident on 8 Mar 1993 involved a Cessna 180H, registration N9737G, operated by Hornberger, Charles G., at Port Alsworth, AK.

What was the probable cause of the accident?

THE NON INSTRUMENT RATED PILOT IN COMMAND ENTERING INSTRUMENT METEOROLOGICAL CONDITIONS. A FACTOR IN THE ACCIDENT WAS THE SNOW/WHITEOUT CONDITION.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X11899. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.