No fatalities

27 Apr 2008: Air Tractor AT-502 — Beck's Spray Service — Waitsburg, WA

Waitsburg, WA, United States

On 27 Apr 2008, an Air Tractor AT-502 operated by Beck's Spray Service was involved in an aviation accident near Waitsburg, WA. No fatalities were reported. Investigators recorded the probable cause as: The pilot's failure to maintain clearance from the terrain while maneuvering at low altitude. Contributing to the accident was the rising terrain. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 1778583330Data APIEditorial standards

A pilot maneuvering at low level over a steep hillside field to plan a chemical application inadvertently lost terrain clearance, resulting in impact with rising terrain 75 feet below a ridge top.

Accident Summary

A pilot conducting low-level reconnaissance over a steep hillside field in preparation for chemical application experienced a loss of terrain clearance, leading to an impact with the rising terrain. The accident occurred after the pilot positioned the aircraft in a situation where it could not climb over the slope despite corrective actions.

Sequence of Events

The pilot arrived at the field, which was situated on a steep hillside, and began maneuvering at low altitude to determine the optimal flight pattern for the chemical application task. During this assessment, the pilot inadvertently allowed the aircraft to enter a position from which it was unable to climb over the rising terrain. In an attempt to avoid the collision, the pilot jettisoned the chemical load and leveled the airplane's wings. Despite these efforts, the aircraft impacted the terrain approximately 75 feet below the top of a ridge.

Aircraft and Pilot Information

No specific details regarding the aircraft type, registration, or pilot information were provided in the source material. The pilot was engaged in an agricultural chemical application operation.

Conclusion

The accident resulted from the pilot's inadvertent positioning of the aircraft in relation to the rising terrain during low-level maneuvering. The pilot's actions to dump the chemical load and level the wings were insufficient to prevent impact. No further causal factors or findings were stated in the source.

Contributing factors

Causes

Altitude — Not attained/maintained

Other contributing factors

Mountainous/hilly terrain