Casualties unknown

Pilot Without Weather Briefing Lost Radar Contact in Mountainous Terrain (N7373K)

Moreno Valley, CA, US

On June 28, 1997, a Cessna R172K (registration N7373K) was involved in an aviation accident near Moreno Valley, CA. Investigators recorded the probable cause as: The pilot's continued VFR flight into instrument meteorological conditions, and his attempt to climb through a low stratus cloud layer while in mountainous/hilly terrain. 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 without a recorded weather briefing was tracked by radar following a highway toward higher terrain. It climbed and radar contact was lost near a crash site in mountainous/hilly terrain. Witnesses saw the aircraft barely visible in cloud bases, heard engine straining, then crash. Rescue found fog with 50-foot visibility.

Incident Overview

An aircraft operated by an unknown pilot was involved in an accident after radar contact was lost near an accident site in mountainous/hilly terrain. According to the investigation, there is no record of the pilot having received a weather briefing before takeoff.

Radar and Flight Path

Radar data showed the aircraft following a highway toward higher terrain at approximately the altitude of the cloud bases. At the end of the radar data, the aircraft climbed until radar contact was lost near the accident site. The terrain in the area is described as mountainous/hilly.

Witness Accounts

Witnesses at the accident site reported that the aircraft flew 300 to 400 feet over their position. The aircraft was barely visible in the base of the clouds, indicating low cloud ceilings. The engine was heard 'straining' and then the witnesses heard the sound of the crash.

Rescue Conditions

Rescue personnel reported that at the time of their arrival, the visibility at the site was about 50 feet in fog. This suggests limited visibility and potentially challenging conditions for both the flight and the subsequent response.

Investigation Findings

The investigation determined that no weather briefing was obtained by the pilot prior to the flight. The aircraft's flight path and the radar data indicate the aircraft was flying at low altitude near cloud bases before climbing and losing radar contact. The crash occurred in terrain consistent with the surrounding mountainous/hilly region.

Frequently asked questions

What happened in the 28 Jun 1997 Cessna R172K accident near Moreno Valley, CA?

An aircraft without a recorded weather briefing was tracked by radar following a highway toward higher terrain. It climbed and radar contact was lost near a crash site in mountainous/hilly terrain. Witnesses saw the aircraft barely visible in cloud bases, heard engine straining, then crash. Rescue found fog with…

What aircraft was involved and where did it happen?

The accident on 28 Jun 1997 involved a Cessna R172K, registration N7373K, at Moreno Valley, CA.

What was the probable cause of the accident?

The pilot's continued VFR flight into instrument meteorological conditions, and his attempt to climb through a low stratus cloud layer while in mountainous/hilly terrain. The pilot's failure to obtain a weather briefing, the weather, and the terrain were factors.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001208X08161. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.