Casualties unknown

Crop-Dusting Aircraft Collides with Irrigation Standpipe (N8960Q)

Shafter, CA, US

On July 21, 1998, an Ayres S2R (registration N8960Q) was involved in an aviation accident near Shafter, CA. Investigators recorded the probable cause as: The pilot's failure to maintain an adequate clearance from the irrigation standpipe due to glare from the rising sun. 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

While applying chemicals to a cotton field, an aircraft struck an irrigation standpipe. The pilot reported that glare from the rising sun reflecting off a plastic crop cover obscured the standpipe until the last moment. After the collision, the pilot performed an emergency landing and the aircraft came to rest inverted. No mechanical issues were found.

Accident Narrative

During an agricultural chemical application flight over a cotton field, the aircraft collided with an irrigation standpipe. The pilot indicated that the flight was conducting the final pass in an easterly direction. The sun had recently risen, and its rays reflected off a clear plastic crop cover situated adjacent to the standpipe. This glare reduced visibility straight ahead, making it difficult to see the obstacle. The pilot reported sighting the standpipe at the last instant and attempted to evade it by pulling the aircraft upward. Despite this maneuver, the aircraft struck the standpipe. Following the impact, the pilot executed an emergency landing, during which the aircraft overturned and came to rest inverted.

Post-Accident Examination

No mechanical anomalies were identified with the aircraft during the subsequent inspection. The aircraft's systems and structure were found to be in normal operating condition prior to the accident.

Environmental Conditions

According to a computer-generated Sun/Moon astrological program, at the time of the accident the sun's magnetic bearing was 60.7 degrees, and its elevation above the horizon was approximately 14.4 degrees. The combination of the low sun angle and the reflective surface of the plastic crop cover created a glare that hindered the pilot's forward vision.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X10636. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.