Casualties unknown

1989-04-22: Boeing A75N1 (N52652) — Malcom Harper — Brooks, GA

Brooks, GA, US

On April 22, 1989, a Boeing A75N1 (registration N52652) operated by Malcom Harper was involved in an aviation accident near Brooks, GA. Investigators recorded the probable cause as: CLIMB NOT POSSIBLE BECAUSE OF A DOWNDRAFT WHICH EXCEEDED THE PERFORMANCE CAPABILITIES OF THE AIRPLANE. FACTORS RELATED TO THE ACCIDENT WERE: INADEQUATE LOCATION OF THE WIND SOCK, THE ADVERSE WIND CONDITIONS, AND THE TREES. 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

During takeoff from a 2970-ft runway surrounded by trees, the aircraft encountered a left drift and stopped climbing after clearing treetops. The pilot traded airspeed for altitude, but the aircraft mushed and settled into trees, resulting in substantial damage.

Accident Details

The runway, measuring 2970 feet in length at an elevation of 820 feet, was mostly surrounded by trees. The temperature was approximately 81°F, yielding an estimated density altitude of 2700 feet. As the pilot and passenger taxied to Runway 2 for departure, the wind sock—located below the tree tops—was noted to be limp.

During the takeoff roll, lift-off occurred at 65 mph after an estimated 600 feet. A climb was established at 75 to 80 mph. However, as the aircraft climbed above the trees, a left drift was encountered and the aircraft stopped climbing, despite no apparent engine problem. At that point, insufficient runway remained to abort the takeoff, and the aircraft was approaching trees near the end of the runway.

The pilot then traded airspeed for altitude to clear the trees. Subsequently, the aircraft began to mush and settled into smaller trees, coming to rest with substantial damage.

Pilot Report

The pilot believed that the aircraft encountered a quartering tailwind and a downdraft as it was climbing above the trees during takeoff, and subsequently got behind the power curve.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X28037. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.