NTSB Identification: SEA92LA185.
The docket is stored on NTSB microfiche number 47313.
Accident occurred Friday, August 21, 1992 in BILLINGS, MT
Probable Cause Approval Date: 09/14/1993
Aircraft: SCHAKNOWSKI DYKE DELTA JD-2, registration: N78BS
Injuries: 2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

UPON TOUCHDOWN THE AIRCRAFT'S LEFT MAIN LANDING GEAR SEPARATED. THE PILOT REPORTED THAT THE LANDING WAS NOT HARD AND WAS FREE OF SIDE LOADS. FAA EXAMINATION OF THE SEPARATED WHEEL ASSEMBLY FOLLOWING THE ACCIDENT REVEALED THAT THE LEFT MAIN LANDING GEAR AXLE HAD SEPARATED ALLOWING THE WHEEL TO DISENGAGE FOLLOWED BY THE SEPARATION OF THE STRUT. FURTHER EXAMINATION OF THE LEFT WHEEL AXLE REVEALED A PRE-EXISTING CRACK CONSISTENT WITH FATIGUE.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

FATIGUE OF THE LEFT MAIN LANDING GEAR AXLE.

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