Casualties unknown

Aircraft Crashes into Ocean off St. Croix After Sudden Dive (N9321H)

St. Croix, US

On July 4, 1984, a Cessna 172M (registration N9321H) was involved in an aviation accident near St. Croix. 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

An aircraft crashed about 200 yards off the northwest shore of St. Croix shortly after takeoff. Witnesses reported straight-and-level flight before a sudden vertical dive. Weather included thunderstorms, and toxicology tests revealed elevated blood alcohol levels.

Overview

Shortly after takeoff, an aircraft crashed approximately 200 yards off the northwest shore of St. Croix, U.S. Virgin Islands. The wreckage came to rest in 135 feet of water and was not recovered.

Witness Accounts

Witnesses observed the aircraft in straight-and-level flight with the engine running normally. Without warning, the aircraft suddenly pitched straight down and entered the ocean. No further maneuvers were reported.

Weather Conditions

At the time of the accident, weather along the northwest coast included rain, thunder, lightning, and high winds. The pilot had received a weather briefing from the St. Croix tower approximately seven minutes before takeoff, during which he was advised of thunderstorms located northwest through northeast of the airport.

Toxicological Findings

Toxicological tests conducted on the pilot and passenger revealed blood alcohol levels of 0.093% and 0.081%, respectively. No other toxicological information was provided.

Frequently asked questions

What happened in the 4 Jul 1984 Cessna 172M accident near St. Croix?

An aircraft crashed about 200 yards off the northwest shore of St. Croix shortly after takeoff. Witnesses reported straight-and-level flight before a sudden vertical dive. Weather included thunderstorms, and toxicology tests revealed elevated blood alcohol levels.

What aircraft was involved and where did it happen?

The accident on 4 Jul 1984 involved a Cessna 172M, registration N9321H, at St. Croix.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X40388. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.