Casualties unknown

Pilot Reports Tailwind After Agricultural Aircraft Strikes Terrain on Upslope (N4784Q)

Palouse, WA, US

On April 4, 2005, a Cessna A188B (registration N4784Q) was involved in an aviation accident near Palouse, WA. Investigators recorded the probable cause as: The pilot's failure to maintain terrain clearance during the initial climb after takeoff. A tailwind, hilly terrain and inadequate airspeed were factors. 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 2026-06-10Data APIEditorial standards

A pilot reported that during a fertilizer application flight, the aircraft settled after takeoff, impacting upsloping terrain despite a load dump, then hit a hilltop. No mechanical failure was found.

Incident Overview

A pilot reported that an accident occurred during an agricultural application flight. The flight was the 30th load of the day, with the aircraft dispensing fertilizer. During the takeoff roll on runway 29 with calm winds, the aircraft was loaded with approximately 1,300 pounds of urea.

Takeoff and Initial Climb

According to the pilot, the tail came up normally during the takeoff roll, and no issues with the engine were noticed. The aircraft lifted off and remained in ground effect while traveling upslope. The pilot then reported that the aircraft began to settle.

Load Dumping and Impact

In response to the aircraft settling, the pilot started dumping the load, but not sufficiently to prevent the aircraft from impacting the upsloping terrain in a three-point attitude. After the initial impact, the aircraft became airborne briefly before colliding with the top of the next hill.

Post-Accident Observations

The pilot reported that after exiting the aircraft, a slight tail wind was noticed. Additionally, the pilot stated there was no evidence of a mechanical failure or malfunction with the aircraft at the time of the accident sequence.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20050420X00482. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.