Warning - invalid argument supplied for foreach()

[WiltshireAirlines]

I am trying to use the admin fleet table found in Admin Panel > Airline Operations > Add and Edit Fleet. I copied and pasted the code (I understand that I won't get the same styling as the admin fleet table but I don't care about styling) over to my fleet module and it says that no aircraft have been added when there indeed have been aircraft added. I'm pretty sure the variable $allaircraft (as array) is no longer valid after moving the code. What is the array variable with all the aircraft? Thanks!

[freshJet]

Add

$allaircraft = OperationsData::getAllAircraft();