Casualties unknown

2007-11-25: Lake LA-4-200 (N1055L) — Jacksonville, FL

Jacksonville, FL, US

On November 25, 2007, a Lake LA-4-200 (registration N1055L) was involved in an aviation accident near Jacksonville, FL. Investigators recorded the probable cause as: the accident was caused by a glassy water condition and the pilot losing depth perception. 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 1781061362Data APIEditorial standards

A pilot descending over the St. Johns River to practice reading wind direction from the water surface experienced unexpected bounces on the water, leading to the airplane sinking. The pilot cited glassy water conditions and loss of depth perception.

Accident Overview

According to the pilot's statement, a flight departed under Visual Flight Rules (VFR) from Cecil Airport (KVQQ) at 15:55 local time, with a destination of Craig Municipal Airport (KCRG). After departing Class D airspace to the southeast, the pilot descended over the St. Johns River approximately half a nautical mile offshore to practice reading wind direction from the water surface.

Sequence of Events

The pilot reported that winds were very light and the water surface was mostly glassy. From an altitude of about 2,500 feet, the pilot descended to approximately 100 feet above the water, making several right-hand circles to observe the water. After leveling the wings, the airplane bounced unexpectedly on the water, followed by approximately two more bounces before spinning to the left. The aircraft came to a stop, and the pilot and passenger exited the cockpit onto the wing. They were subsequently picked up by a passing motorboat. The airplane sank after about three minutes.

Pilot's Comments

The pilot stated that the accident was caused by a glassy water condition and the pilot losing depth perception. He clarified that there was no intention of landing; he was practicing reading water for wind direction where wind was very light or absent. Additionally, the pilot noted that he had been endorsed on September 11, 2007, for Single Engine Sea (SES) practical testing but had not yet taken the check ride.

Probable cause

the accident was caused by a glassy water condition and the pilot losing depth perception

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20080214X00190. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.