Accident Details
On March 7, 2014, at approximately 1340 Pacific standard time, a Cessna 170B, registration N2252D, experienced a collapse of the left main landing gear during the landing roll at San Luis Obispo, California. The pilot, an airline transport pilot, was operating the aircraft under 14 Code of Federal Regulations Part 91. The local personal flight had departed about 1300. Visual meteorological conditions prevailed, and no flight plan was filed. The pilot and one passenger were not injured; the airplane sustained substantial damage.
Pilot Report
According to the pilot, the touchdown was normal. Shortly after touchdown, he heard and felt what he described as similar to driving a car over dummy dots on the road, after which the left main landing gear collapsed.
Investigation
A Federal Aviation Administration (FAA) inspector retrieved and reviewed video from three surveillance cameras that captured different views of the landing. The inspector assessed that all three videos depicted a normal landing.
Postaccident Examination
The FAA inspector conducted a postaccident examination of the airplane. Using an inspection mirror, the inspector observed into the damaged belly of the fuselage and noted corrosion of the structural bulkhead assembly in the area of the gearbox, where substantial damage occurred.
No determination of probable cause was provided in the source.