Cessna 340A Failed Nose Gear Linkage Selecting the landing gear “down” produced an unsafe nose gear indication. Manual gear extension proved unsuccessful. The nose landing gear collapsed upon landing. Inspection revealed the nose landing gear linkage adjusting fork (p/n 5045211-2) had fractured, preventing extension of the nose landing gear to a down and locked position. Evidence suggests this fracture was progressive in nature, and some 288
Twin And Turbine Troubles
Selecting the landing gear "down" produced an unsafe nose gear indication. Manual gear extension proved unsuccessful. The nose landing gear collapsed upon landing. Inspection revealed the nose landing gear linkage adjusting fork (p/n 5045211-2) had fractured, preventing extension of the nose landing gear to a down and locked position. Evidence suggests this fracture was progressive in nature, and some degradation to the components structure existed prior to failure.
Key Takeaways:
- Multiple aircraft experienced critical landing gear component failures, including fractured nose gear linkages and cracked struts, with some showing signs of progressive degradation.
- Fuel system integrity was compromised by repeatedly failing overhauled fuel pumps from one supplier and a seized fuel selector valve due to corrosion exacerbated by a design flaw.
- Control system issues included a recurring roll-trim actuator malfunction caused by loose wiring.
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