Casualties unknown

Pilot Encountered IMC, Descended Below Approach Path and Collided with Trees (N739YS)

Paso Robles, CA, US

On October 19, 1988, a Cessna TR-182 (registration N739YS) operated by Patroline, Inc. was involved in an aviation accident near Paso Robles, CA. Investigators recorded the probable cause as: THE PILOT FAILED TO MAINTAIN THE PROPER ALTITUDE WHILE EXECUTING THE PUBLISHED INSTRUMENT APPROACH PROCEDURE. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 1 related events involving the same aircraft type or operator are linked below.

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

A pilot departed VFR, encountered IMC, and was cleared for a VOR-DME approach with low visibility. The aircraft descended 1,200 feet below the approach profile and struck trees.

Flight History

A pilot operating under visual flight rules (VFR) departed and later encountered instrument meteorological conditions (IMC) near the destination. The pilot then requested an instrument flight rules (IFR) clearance for a VOR-DME approach. Air traffic control informed the pilot to expect a delay due to another aircraft executing a missed approach.

Weather and Approach

The pilot was advised of weather conditions: indefinite ceiling 200 feet, visibility 1/4 mile. A visibility of 1 mile was required for a straight-in landing. The pilot accepted the approach clearance and initiated a descent. During the approach, the aircraft descended 1,200 feet below the prescribed approach profile and subsequently collided with trees.

Post-Accident Findings

Post-accident investigation revealed that the pilot was very familiar with the terrain and was knowledgeable of ranch airstrips in the area. The pilot had previously landed at these airstrips to wait out weather at the same destination airport. The course being flown by the pilot would have taken him directly to one of these ranches.

Frequently asked questions

What happened in the 19 Oct 1988 Cessna TR-182 accident near Paso Robles, CA?

A pilot departed VFR, encountered IMC, and was cleared for a VOR-DME approach with low visibility. The aircraft descended 1,200 feet below the approach profile and struck trees.

What aircraft was involved and where did it happen?

The accident on 19 Oct 1988 involved a Cessna TR-182, registration N739YS, operated by Patroline, Inc., at Paso Robles, CA.

What was the probable cause of the accident?

THE PILOT FAILED TO MAINTAIN THE PROPER ALTITUDE WHILE EXECUTING THE PUBLISHED INSTRUMENT APPROACH PROCEDURE.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X27080. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.