NTSB Identification: CHI01FA186.
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Accident occurred Friday, June 22, 2001 in Lynn Center, IL
Probable Cause Approval Date: 09/10/2002
Aircraft: Bowman Renegade Spirit, registration: N730JB
Injuries: 1 Uninjured.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

The pilot was performing a pull up during aerobatics when he heard a bang and then felt a left rolling tendency. Postaccident examination of the experimental amateur built airplane revealed that the lower left wing exhibited upwards twisting which extended on an inclination from the wing root to a point on the wing's leading edge forward of the wing strut and then on a declination to the wing tip. The pilot's student pilot/medical certificate was expired.

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

the in-flight deformation of the left wing.

Full narrative available

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