Expanding Pacedout's original question, I know that there are spares pools between airlines. (BA I think operate the 747 pool at JFK or used to.) Are parts interchangeable between different operators airlines given the high degree of customisation that certainly Boeing does? For example, would a fuel pump for a P&W engine work with a GE/RR one?
I remember many years ago hearing an engineer saying that a United airlines fuel pump was being used on a BA flight from ORD but I think that both airlines used JT9D engines on their 747s.
It makes you wonder how much cash the airlines have tied up in inventory.
Last edited by Peter47; 1st June 2013 at 10:30.
Reason: Typo