> I'm not a 737 pilot, so I don't know what runaway stab trim normally looks like; maybe it's usually constant?
Yes, exactly.
The problem (well, one of the problems) is that during normal operations the trim wheels are constantly moving intermittently, so additional intermittent motion isn't immediately seen as unusual.
(Disclaimer: I am not a 737 pilot either, but I am a pilot, I fly a plane with an electric trim (Cirrus SR22) and the info above came from a very experienced 737 pilot named Juan Browne who hosts an excellent channel on YouTube called Blancolirio.)
Yes, exactly.
The problem (well, one of the problems) is that during normal operations the trim wheels are constantly moving intermittently, so additional intermittent motion isn't immediately seen as unusual.
(Disclaimer: I am not a 737 pilot either, but I am a pilot, I fly a plane with an electric trim (Cirrus SR22) and the info above came from a very experienced 737 pilot named Juan Browne who hosts an excellent channel on YouTube called Blancolirio.)