[F-18 ram air scoop]

It is on the right side, just in front on the Avionic bay door. It's about 2 inchs big.

Actually it's on the left hand side and I believe it hasn't been modeled in yet. Before start-up the scoop is out and after the bleed air is cycled and ecs kicks in, the scoop goes in.

 

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[APU ACCUM Warning]

Does it have to be recharged by ground crew? Or can it be recharged with bleed air or something on the plane?

If the pilot starts the APU during ground start-up and shuts it down without starting the right engine, then the ground crew must recharge it manually. Otherwise normally the APU should recharge itself once the right engine is up and running. Starting the left first won't recharge it as it is not connected. Not sure why the warning is on in flight though.

 

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