Casualties unknown

Aircraft Over Maximum Gross Weight During Initial Climb Leads to Accident (N7729D)

Roy, UT, US

On July 11, 1999, a Piper PA-22-150 (registration N7729D) operated by K W Aviation, Inc was involved in an aviation accident near Roy, UT. Investigators recorded the probable cause as: The pilot inadvertently allowing the aircraft to enter a stall during initial climb following takeoff. Factors were high density altitude and gross weight which exceeded the maximum. 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

During initial climb, the aircraft settled, climbed slowly, entered a right turn, and later rolled inverted into trees. Density altitude was 7,400 ft. Investigation found the aircraft was 136 pounds over its maximum certified gross weight.

Accident Sequence

After takeoff, during the initial climb, the aircraft was observed to settle and then climb slowly. It subsequently entered a right turn. The controller queried the pilot about having problems, to which the pilot responded that he would return and land but did not indicate any specific issues. The controller issued a clearance to land on the nearest runway. Shortly thereafter, the aircraft's wings were seen rocking, followed by the aircraft rolling inverted to the right and descending into trees.

Investigation Findings

The investigation revealed that at the time of the accident, the aircraft was 136 pounds over the maximum certified gross weight allowable. Additionally, the density altitude was reported as 7,400 feet.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X19237. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.