NTSB Identification: DEN88LA145.
The docket is stored on NTSB microfiche number 36163.
Accident occurred Tuesday, July 05, 1988 in SIOUX FALLS, SD
Probable Cause Approval Date: 06/07/1989
Aircraft: SIKORSKY S-58J, registration: N62243
Injuries: 1 Minor.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
N62243 WAS BEING USED TO LIFT AIR CONDITIONING UNITS TO THE TOP OF A SHOPPING MALL. THE PLT STATED THAT HE WAS ON THE 16TH LIFT OF THE DAY AND HAD JUST TAKEN OFF WHEN HE HEARD TWO LOUD POPS AND THE ENGINE LOST POWER. AFTER JETTISONING THE LOAD HE EXECUTED AN AUTOROTATIVE LANDING. ACCORDING TO THE PILOT THE AIRCRAFT MADE A VERY HARD LANDING. THE INVESTIGATION REVEALED THE ACCESSORY DRIVE AND STARTER SHAFT HAD SHEARED ON THE FORWARD END, IN THE SPLINED AREA.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:ACCESSORY DRIVE ASSY,DRIVE SHAFT..SHEARED
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