Casualties unknown

1990-04-29: Ryan NAVION A (N4442K) — Denison, TX

Denison, TX, US

On April 29, 1990, a Ryan NAVION A (registration N4442K) was involved in an aviation accident near Denison, TX. Investigators recorded the probable cause as: PILOT'S ATTEMPTED TAKEOFF WITH CONDITIONS IN EXCESS OF THE AIRPLANE'S PERFORMANCE CAPABILITIES. CONTRIBUTING TO THE ACCIDENT WAS THE HIGH DENSITY ALTITUDE AND THE UPHILL RUNWAY. 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 1781061362Data APIEditorial standards

On a hot, humid day with density altitude of 2,700 feet, a pilot attempted an uphill takeoff on a grass runway. After an early liftoff and mushy control, the aircraft struck a tree and entered woods tail-first 200 feet past the runway end.

Synopsis

During a high-temperature, humid day at a field elevation of 705 feet, the density altitude was reported as 2,700 feet. A light wind from the north prevailed, and the pilot chose to depart uphill toward the north on a grass runway. The runway had experienced heavy rain several days prior, although the weather had been clear for the days immediately preceding the event.

Sequence of Events

The pilot reported that after lifting off early, the aircraft exhibited mushy control response. In response, the pilot lowered the nose, resulting in the airplane touching back down on the runway. The pilot then kept the nose down to accelerate sufficiently to clear trees beyond the runway. At the last moment, the pilot lifted the airplane off, but the right wing struck a tree. The impact caused the aircraft to rotate 180 degrees to the right and enter the wooded area tail-first. The trees struck were located 200 feet beyond the end of the 2,000-foot runway.

Environmental Conditions

The day was characterized as hot and humid. The field elevation was 705 feet, and the density altitude was calculated at 2,700 feet. Wind was light from the north. The grass runway surface had received heavy rain days earlier, but the weather had been clear for the past several days prior to the event.

Damage

As a result of the wing striking a tree and subsequent impact with trees in the wooded area, the aircraft sustained damage. No further details regarding the extent of damage are specified in the source.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X22932. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.