Sticking/Jamming B737 thrust lever(s) - Why???
Every so often I find myself on a 737-300 or 500 that has one or more dodgy 'sticking' thrust levers.
The symptom is invariably intermittent and no amount of FMC bite testing is going to identify the problem.
Imagine an intermediate level-off in the descent/approach, the A/T tries to advance the thrust levers and one either remains closed or advances an inch or two then jams solid (same goes for retarding on the glidepath).
We're not talking a lazy autothrottle here, I mean a hefty pressure exerted causing a sudden release and then subsequent cycling of the lever catching on a 'notch' in both directions.
These events are never fully explained due to "Ground tested satis. report further" ( familiar to all!).
Any ideas?
Many thanks, Haul.
Last edited by Haul By Cable; 28th July 2008 at 16:16.
Reason: missing word to clarify