NTSB Identification: LAX00LA020.
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Accident occurred Tuesday, October 19, 1999 in EL MONTE, CA
Probable Cause Approval Date: 05/17/2001
Aircraft: Cessna 150H, registration: N22795
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.

The pilot was en route to conduct banner towing when the engine began running roughly. The pilot said the engine began to shake excessively and lose power. He felt the engine might quit and selected a nearby landfill as his emergency landing area. During the precautionary landing the airplane collided with a ditch and nosed over. A postaccident examination revealed that the number 2 cylinder head had cracked from the bottom spark plug bore to the exhaust valve seat.

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

A cracked No. 2 engine cylinder, which led to a loss of power. A factor was the ditch in the forced landing area.

Full narrative available

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