Incident Overview
The airplane touched down on the runway with the landing gear retracted and the flaps not deployed, after a loss of hydraulic fluid. The pilot reported being unable to lower the flaps for landing. Following touchdown, the aircraft slid off the runway, impacted a culvert, and came to rest on a grass area adjacent to the runway.
Hydraulic System Details
The landing gear and flap system were operated by a common hydraulic system. The pilot was unable to extend the flaps after failing to extend the landing gear.
Inspection Findings
Post-accident inspection of the airplane revealed a fractured hydraulic tube in the nose section. The fracture exhibited characteristics of fatigue, located at one of several circumferential impressions on the tube. The airplane maintenance logbooks contained no record of repair for the hydraulic tube assembly.