Originally Posted by
Spooky 2
I don't think you understand at all. If you need to dump it is desirabl, if it can be done, to be at or above 4000AGL, but I don't believe there any regulation that requires any altitude should the need arise. The 777 has a pretty sophisticated fuel dump sytem to cover many of the nuances discussed in this thread so far. in addition there should have been 4 pilots on the flight deck st this point in time.
Initially the crew in comms with ATC said no to the fuel dumping. Then at some stage my guess is that one or two of the jump seaters "helped out" by initiating the fuel dump. From my viewing of the video from the burger joint, dumping ceased as they got closer to LAX. Seems port dump valve closed earlier than the starboard valve. Anyhow, the report clarify for all.