Let Kunovice: L-23 Super Blanik Cracked Elevator Hinge Brackets During a 100-hour inspection, several cracks were discovered on the inboard elevator hinge bracket (p/n A730258N). Additional cracks were found on the seven aircraft after a fleet- 288
Crack Me Up
During a 100-hour inspection, several cracks were discovered on the inboard elevator hinge bracket (p/n A730258N). Additional cracks were found on the seven aircraft after a fleet-wide, one-time inspection was completed. Aircraft times varied from a low of 2507.7 hours to the group high of 2740.3 hours. The difference is a mere 232.6 hours, with 2671.4 the average of the seven records. Everything is cracking right on schedule-you could plan a vacation period around these numbers.
Key Takeaways:
- Several aircraft models, including the L-23 Super Blanik and Pilatus PC-12-47, experienced critical cracking in structural and flight control components like elevator hinge brackets and flap drive arm assemblies, often discovered during inspections.
- Various engine types (Lycoming TIO-540, O-320, IO-520-L) exhibited significant component failures, including cracked engine cases, failed valve keys leading to rocker arm damage, and stuck exhaust valves causing piston contact and oil leaks.
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