Unknown part

I wanna know why the landing gear didn't deploy on that 737 in S. Korea.

 

And I didn't realize that the door falling off and the tire issue (forgot the details) were both brand new planes that had not yet been serviced by the mechanics... I figured that all planes went through some kind of preflight service/check by mechanics, strange that new vehicles go through a pre delivery inspection/check list and drive before being handed over to the new owner, but I guess that isn't the case with planes... my bad...

Yes I know the difference in an assembly line worker and a mechanic, been a automotive mechanic for over 30 years, as well as ICE forklifts from small indoor Nissans to 30k pound lull 1044's... lol

 

Feel free to speculate with the professional pilots, 78 pages and counting... https://www.pprune.org/accidents-close-calls/663324-jeju-737-800-crash-muan-airport-south-korea.html

Also this is interesting, written 12 years ago: https://www.reddit.com/r/aviation/comments/1hyd5b/an_interesting_spin_on_asian_flight_training/

 

I'm not gonna speculate, I'll wait to see what is released from the flight data recorder.
Interesting read about the training though. Sadly i'm not surprised.