NTSB Identification: CEN11FA220
14 CFR Part 91: General Aviation
Accident occurred Saturday, February 19, 2011 in Romeoville, IL
Probable Cause Approval Date: 08/29/2012
Aircraft: Mooney M20J, registration: N888DF
Injuries: 2 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 reported that the left main landing gear collapsed shortly after touchdown during the landing roll. The airplane subsequently veered to the left and struck a runway edge identifier light. A postaccident examination confirmed that the left main landing gear had partially collapsed into its wheel well. The nose and right main landing gear remained fully extended. Damage sustained to the push-pull tubes that extend and retract the main landing gear precluded the determination of why the left landing gear collapsed. However, the observed damage to the push-pull tubes was likely attributable to the collapse of the left landing gear during the accident sequence. With the exception of the damaged push-pull tubes, there were no additional mechanical or rigging anomalies found with the landing gear extension/retraction system. Additionally, the landing gear position warning horn, instrument panel indicator lights, and floor-mounted visual/mechanical indicator functioned as designed, providing proper indication that the landing gear was in the fully extended position before landing.

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

The collapse of the left main landing gear during the landing roll for undetermined reasons.

Full narrative available

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