Casualties unknown

1988-08-27: Mooney M20F (N9528M) — Yoreck, Robert — Jackson Hole, WY

Jackson Hole, WY, US

On August 27, 1988, a Mooney M20F (registration N9528M) operated by Yoreck, Robert was involved in an aviation accident near Jackson Hole, WY. 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

A private pilot who obtained his instrument rating 14 days prior to the accident logged 42 total instrument hours. The aircraft struck two tall trees and fell vertically near Jackson Hole, with weight near max gross and CG beyond aft limit.

Pilot Background

The private pilot involved in the accident had obtained his instrument rating 14 days before the accident. His total instrument flight time amounted to 42 hours, of which 12 hours of actual instrument flight time were logged in March 1987. The remaining instrument flight time was simulated.

Flight and Weather

Visibility in the Jackson Hole area was reduced by smoke. The pilot reported that he was climbing through 11,000 feet for 14,000 feet.

Accident Sequence

The aircraft wreckage was found at 9,000 feet. The aircraft had struck two tall trees and then fell vertically to the ground.

Aircraft Condition

The aircraft weight was calculated to be near maximum gross weight, and the center of gravity (CG) was determined to be beyond the aft limit.

Manual Warning

The aircraft owner's manual contains a warning stating: "Up to 2,000 ft of altitude may be lost in a one-turn spin and recovery... The rate of rotation during the first portion of the spin is quite rapid and the occupants of the aircraft will likely become disoriented."

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X26532. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.