Squawk Box

June 2009 Issue

Cracked, Loose, Failed

The following information is derived from the FAA’s Service Difficulty Reports

During slow-flight maneuvers, the instructor noticed the green, landing gear "safe" light was not illuminated. The student observed the left gear was hanging out—and swinging. The gear was cycled, but the left main remained free and disconnected. The instructor elected to retract the right and nose gears and land gear-up. Maintenance found the left gear pivot had sheared at the spline shaft. The right gear was removed and Zyglo checked. Close inspection found the right pivot was cracked three-quarters of the circumference around the spline shaft, nearing complete failure. Gear pivot p/n: 22411143.

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