PPRuNe Forums - View Single Post - NYT: How Boeing’s Responsibility in a Deadly Crash ‘Got Buried’
Old 25th Jan 2020, 09:34
  #119 (permalink)  
Peter H
 
Join Date: Jun 2008
Location: Cambridge UK
Posts: 164
Originally Posted by RetiredBA/BY View Post
No I dont.

Perhaps I have an early onset of something but I have no memory of a STS on our very early -300s, which even had round instruments, and absolutely no memory of anything about it in the sim. Mach trim yes STS no. This worries me a little as the technicalities of my aircraft of all types were always of deep interest. No recall of ever seeing uncommanded trim movement, either.

Our - 300 “course”. Was very simple really just the FMS and autopilot operation, the rest we pretty much made up in the belief -300 airframe was pretty much as a - 200 with some tweaks.

My FO on my first -300 trip is coming on Friday, I will discuss his knowledge of the STS.

Just looked at my Boeing training notes. Runaway stab was practised on 7 sorties, manual trim operation alone on 2 and no discussion or even mention of the Yo Yo procedure, never heard of it on my time on the 73.

Intersting to see my ppl now shows my former types include all 737s up upto 900, never even sat in one !
No guarantee of accuracy, but see https://aviation.stackexchange.com/q...the-boeing-737

>Was the Speed Trim System implemented on the original Boeing 737 or just the Boeing 737 NG series?

Boeing's patent (US4676460A) for the STS was filed on 1984-11-28, the same day of the 737 Classic (3/4/500 series) entering service.

So since the addition of the bigger engines on the Classic, it's been there.

Peter H is offline