N642KC

On December 18, 2002, a Schweizer 269C (N642KC) was involved in an incident near Los Banos, CA. All 2 people aboard were uninjured. The aircraft sustained substantial damage.

The National Transportation Safety Board determined the probable cause of this incident to be: The improper engine overhaul by other maintenance personnel, which resulted in an exhaust valve failure and a total loss of engine power while in maneuvering flight.

On December 18, 2002, at 1521 Pacific standard time, a Schweizer 269C, N642KC, experienced a total loss of engine power and rolled over during a forced landing in a muddy field at Los Banos, California. The helicopter was operated by the pilot under 14 CFR Part 91. The commercial pilot and one passenger were not injured. The helicopter was substantially damaged. Visual meteorological conditions prevailed, and no flight plan had been filed. The flight originated at Los Banos about 1500.

The pilot and aircraft maintenance technician were performing a post maintenance test flight when a vibration occurred followed by a total loss of engine power. Post accident examination revealed a failed exhaust valve in the number 3 cylinder.

This incident is documented in NTSB report LAX03LA052. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N642KC.