Hello to everyone!Sometimes, after switching engines on or after landing, one of the Throttle Levels does not work anymore.1) it happens sometimes that after shtiching on, and when start taxing, one of the 2 levels doesn

I have experienced this a couple of times, but on both occasions I had been in another aircraft and had changed to the 737NG while on the runway.I assumed this was causing the problem, so I always end the flight and reselect from the start again. Don't know if this is relevant to your situation.RegardsMervyn