I remember a story,recounted to me by one of the protagonists,many years ago.Reminded me to ALWAYS keep my hands on the thrust levers,during commanded thrust changes,and I have passed it on,time and again.
Boeing 757,white hat brigade,take off phase...
Just after climb thrust called for,the PM called "engine failure",the PF confirmed and began the memory item procedure...When he arrived at the thrust lever,he found it already closed.
I believe,at that time,FLCH was the preferred method,for climb thrust,and before speed increase for flap retraction.(!).
The left hand thrust lever had remained at takeoff thrust due some FADEC or physical obstruction problem,resulting in the speed mode of FLIGHTLEVEL CHANGE,commanding the only moveable thrust lever to adjust the overall thrust to maintain the FMC speed command...BINGO!!!!!
A better demonstration of the wisdom of the hands-on approach,I can't imagine.
RAT 5.. I think we were neighbours..130 hours in one month,?.FTLs, where provision of IRS allowed the 8 hour limit to be extended somewhat,and then some!