HELP!!! Dangerous Window - Can I Repair or Need New Window?

[ALiterateGal]

Upon recently moving into my new 10 year old home in Central Florida, I discovered that the lower sash of one (aluminum?/vinyl?) window would not remain in place when opened. Fortunately my cat was not on this sill when the sash collapsed making me aware of this situation.

Upon examining the window closely, it appeared that the lining of one of the cylinders in the side jamb had cracked. (Photo of cylinder in place and cylinder with grooved metal interior are attached, for reference.)

Can anyone please advise me of this part's name and whether replacements are available? Can the existing window be repaired or do I need an entire new unit?

Thank you in advance for your assistance!

Window Jamb & Cylinder.jpg

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[Windows on Washington]

Same thing I said on the other board.

Call these guys and have pictures of the ends and middle as well as measurements available.

http://blainewindow.com/