PPRuNe Forums - View Single Post - Disagree button for engine shutdown
View Single Post
Old 23rd July 2025 | 21:36
  #33 (permalink)  
BugBear
 
Joined: May 2024
: CPL
Posts: 379
Likes: 36
From: Kaupuala
td. arf

""By design, the rest of the FADEC doesn't use the digital 'cutoff' command from the aircraft except during autostart - once out of the 'start' mode, that logic tree is disabled. But all that is separate between engines. If you put an aircraft logic device in the CUTOFF circuit, you've suddenly introduced a potential single failure that can affect both engines.
In the aftermath of the Air India crash, you should certain see why that might not be a good idea (and besides, it would violate the engine isolation requirements of 25.901(c).). ""

Hello... If pilots have performed a "Double cut"" does FADEC do AutoStart? Is it not interrupting a CutOff command? In both? In the QRH, it cautions pilots not to interrupt a Restart. Is that right?
Looking for the sampling rate for Pilots' RUN/CUTOFF switches....anyone?
BugBear is offline  
Reply