3 ms·

But if it crashes when it goes from -179°59'59" (179°59'59" degrees West) to 179°59'59" East it'd be sort of understandable... Apparently one of the early 737

But if it crashes when it goes from -179°59'59" (179°59'59" degrees West) to 179°59'59" East it'd be sort of understandable... Apparently one of the early 737 series of crashes back around the 1970s had an 8-bit rudder variable as 000 being full-left and 255 as full-right (or maybe it was vice-versa). The problem being that if the rudder was full-right at 255 and the system allowed any increase in right-rudder, it would immediately overflow back to 000 or full-left-rudder.That caused several 737s to fall out of the sky before the cause was discovered.

yial 3y ago
I think you’re referencing https://en.wikipedia.org/wiki/United_Airlines_Flight_585 https://en.wikipedia.org/wiki/United_Airlines_Flight_585 “The National Transportation Safety Board determines that the probable cause of the United Airlines flight 585 accident was a loss of control of the airplane resulting from the movement of the rudder surface to its blowdown limit. The rudder surface most likely deflected in a direction opposite to that commanded by the pilots as a result of a jam of the main rudder power control unit servo valve secondary slide to the servo valve housing offset from its neutral position and overtravel of the primary slide”
- simonblack 3y ago
  When I was a pilot, we used to get Air Safety publications which told of air crashes and their causes. Extremely good educational material. Probably why I'm still alive today.