Cessna 172RG Cracked Main Gear Actuator The crew heard a noise when the landing gear was retracted. The left landing gear remained in a partially retracted position, unable to retract or extend. A successful gear-up landing ensued. 288
Cracking And Sticking
The crew heard a noise when the landing gear was retracted. The left landing gear remained in a partially retracted position, unable to retract or extend. A successful gear-up landing ensued. The l/h landing gear actuator body (p/n 128101-3) had cracked at the forward mounting bolt hole, allowing the actuator bore to open enough that the piston would not engage the pivot sector gear sufficiently to move the landing gear.
Key Takeaways:
- A Cessna 172RG experienced a cracked main landing gear actuator, leading to the gear remaining partially retracted and a subsequent gear-up landing.
- New fuel selector valves on a Piper PA-44-180 repeatedly failed, becoming severely sticky and difficult to move shortly after installation.
- Multiple Continental IO-520 engines were found with cracks in ECI Revision 3 "E" series cylinders, specifically located behind the fuel injector between the first and third fins.
- A Sensenich wooden propeller became loose on a Piper PA-18-150 due to multiple bolts backing out, broken safety wire, and a broken attachment bushing.
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