It's slightly depressing that we've gone from the "Well they
must have run out of fuel, I just
knew it" to "Well they
must have let the engines spool down too long to spool them up again, I just
knew it".
At least the fuel theorists didn't have an AAIB announcement to work on. Know we've got official confirmation the engines didn't respond the idle spool theorists want us to to think thats fiction and it was all caused by a schoolboy handling error!
I don't know what the N1 is on this aircraft, it's a RR, the primary gauge is EPR. BA requires
approach power to be set at 500 ft. Approach power varies according to weight and landing flap setting. I don't know what the N1 was when the think hit the deck but reports in a UK newspaper suggest the EPR gauges were both dead before the aircraft hit the fround.