Originally Posted by yotty
Autobrake arming logic....
7 Normal brake system is pressurized.
I assume you mean that #4 hydraulics system is available, rather than the brakes being pressurised.
5 Brake metered pressure switches on the autobrake shuttle valves show low pressure.
Despin is active when the gear lever is UP (via the alternate braking system), but the brake metered pressure switches are only on the normal system.
I believe it was routine on KLM to leave the gear lever in UP. I'm not sure if it was a temporary thing or permanent (after a series of maintenance induced incidents causing doors to open in flight).
Hopefully someone could try this in another sim.
Thanks.
P.S. Sorry for the slow response. My PPRuNe notifications don't seem to be working.
P.S. The gear lever only puts out DOWN and NOT DOWN electrical signals. If the BA sim is correct, the Autobrake system must be looking at something other than handle position.