Casualties unknown

Pilot unable to maintain lift after takeoff with rye seed load (N4788Q)

Belgrade, NE, US

On September 9, 1991, a Cessna 188B (registration N4788Q) operated by William Mckeeman was involved in an aviation accident near Belgrade, NE. Investigators recorded the probable cause as: THE PILOT'S FAILURE TO TAKE ADEQUATE REMEDIAL ACTION. A RELATED FACTOR IS THE PREMATURE LIFTOFF. 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 attempting an aerial application takeoff with a rye seed load reported losing lift shortly after becoming airborne, resulting in a landing in a nearby corn field approximately 100 yards from the runway end.

What happened

The pilot was preparing for an aerial application mission involving the transport of rye seed. During the takeoff roll, the aircraft lifted off the runway surface. However, the pilot reported being unable to maintain positive lift after becoming airborne. Consequently, the aircraft descended and landed in a corn field located approximately 100 yards from the end of the runway.

The investigation

Following the incident, investigators examined the aircraft to determine if mechanical failure contributed to the event. The examination revealed no evidence of pre-impact mechanical difficulty with the aircraft systems or structure. This finding suggested that the aircraft's performance capabilities were not compromised by a malfunction prior to the landing.

Findings

The pilot stated that there may have been downdrafts in the area during the takeoff phase, which could have affected lift generation. The aircraft was carrying a significant load of rye seed, which impacts weight and balance characteristics. The combination of the heavy payload and potential atmospheric conditions likely contributed to the inability to sustain flight after liftoff.

Safety message

Pilots conducting aerial application operations must carefully calculate takeoff performance based on the specific weight of the crop load. Understanding how increased weight affects lift requirements and climb gradients is critical for safe operations, especially when environmental factors such as wind or thermal conditions are present.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X18045. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.