The pilot, with three passengers, proceeded toward the runway in Dallas, Texas, for departure, in a Cessna 421A.
As the twin-engine airplane approached the taxiway intersection, the right main landing gear collapsed, causing the right wing tank and right engine propeller to hit the ground.
Examination of the airplane revealed substantial damage to the right wing and damage to the right engine propeller.
Further examination of the landing gear revealed that the gear was not properly rigged.
The NTSB determined the probable cause as the improper rigging of the landing gear by maintenance personnel, which resulted in the landing gear collapse.
NTSB Identification: CEN14CA310
This May 2014 accident report is provided by the National Transportation Safety Board. Published as an educational tool, it is intended to help pilots learn from the misfortunes of others.