B737 Classic- A/T de-select speed
After a long break, I'm currently re-qualifying on the B737-3/400.
Back-in-the-day with another operator, we had an often used procedure of A/P disconnect, but rather than fully disconnecting the A/T, we would de-select speed, leaving the A/T in Armed mode, the theory being it gave low-speed protection.
Later I became aware that Boeing recommended against this procedure, as they thought it risked un-commanded A/T movement at critical times(such as flare/landing).
Lo and behold, my new company also uses this procedure.
Does anyone have a link to an actual Boeing guidance source recommending against this? I'd just like to diplomatically show my management that the manufacturer doesn't like this procedure.