Squawk Box

December 2008 Issue

Cracks And Corrosion

The following information is derived from the FAA’s Service Difficulty Reports and Aviation Maintenance Alerts.

The pilot reported a loud "pop" just before entering the pattern. When he extended the gear, the green "gear down" light would not come on. A fly-by revealed the left main gear was in transit. A gear-up landing ensued. Inspection revealed the left main gear actuator (p/n 9882015-2) housing was cracked across the forward attach bolt hole. The cracked housing allowed the piston rack to jump gears on the pinion gear attached to the main gear leg. This area is inspected each 100 hours for cracks and defects very carefully, (using) lights and inspection mirrors. Time since last inspection: 25.0 hours.

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