Going back to the APU. I get asked if the doors are heavy when you open and close them. They are not heavy when lowering but when closing them they can get heavy due to one getting tired of pushing up on them and trying to get at least one hook latched.
The design of the APU access doors is what I like to call maintenance friendly. When you unlatch all the latches, you gently lower the doors and a safety spring hooks onto part of the firewall. As you can see, one of the safety springs is longer making one door hang lower than the other. The reason for that is that it creates a gap wide enough to allow you to stick your arm in the compartment to unhook it and lower the door. It’s a good design but still need to be careful.
When the APU is running and you close the access doors, they will become a lot easier to close as the APU creates a suction within the compartment. #plane #aviation #boeinglovers #instaplane #airline #instaaviation #instagramaviation #777 #boeing #b777 #megaplane #avgeek #aviaton