If I remember correctly the Wilco Manual says that if the LE slats are asymetrical the Ignition switch is to be set at CONT; if the TE flaps are asym the Ignition switch is set to FLT. What is the reason for this? thanks, lr.

I'm afraid I dont have any 767 manuals handy at the moment, so cant check up on the checklists, but I can offer an idea.Automatic continuous ignition is provided with the flaps out of up, this will be driven by one flap sensor (say the left inboard). If the assymetry is caused by a failure of the left inboard flaps to run, the the checklist directs you to extend leading edge slats, and to leave the trailing edge flaps in their current poisition. In this case continuous ignition would not be provided for approach, as the aircraft doesn't believe flaps are extended. This would be the reason for having to select continuous ignition for one of them. As for flight? are you sure, because if that is the case I cant offer an explanation!

okay, thanks for the explanation. I made a mistake on the FLT: the Wilco manual says use FLT when no flaps and no slats can be extended. Now I understand based on your explanation. Thanks again. lr.