Old 25th Feb 2019, 23:25
  #28 (permalink)  
Join Date: Jul 2013
Location: Everett, WA
Age: 64
Posts: 2,384
[COLOR=left=#000000]FAR regs do not even require it to have a jettison system.[/COLOR]
Are you sure about that part? It may not be spelled out in the FARs, but good luck certifying without one if there is a big delta between MTOW and Max Landing.
At EIS, the 767 didn't have a fuel jettison - but Max TO was 330k lbs., and Max Landing was 320k lbs. - so no big deal. But then Boeing started jacking the max TO weight - eventually getting over 400k lbs., but max landing didn't change. The FAA mandated Boeing install a fuel jettison system, and even went so far as to force it be retrofit to a few already delivered aircraft.
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