Naturally.
On the 330, two LGICUs one does one thing, the other is a backup, each gear cycle the primary and the secondary “flip flop”, blah blah blah.
But in all actuality, either ‘computer‘ may be nothing more than a subroutine on another computer with related and unrelated functions, so when the ‘comptuer’ goes out, depending on which one, there are other cascading errors and operational challenges with lower bunk rest facilities, cargo heating functions, hydraulic system restrictions and the list goes on for a bit. I keep bringing this up because this is what happened during IOE and I see newbies trying to use system knowledge to out-think the ECAM procedures and QRH all the damned time potentially making a bad situation worse.
For a pilot to have to understand all of this is doofus. Especially when you run the ECAM to stabilize the situation, then look at the QRH to see what other systems are effected. “Ah ah ah! From memory, what specifically does LGICU2 affect?” Is Riddle-esque.
This is one of f the lessons I end up having to teach a lot about the Airbus because we’ll be sittinng there, before start, with a status message like “Air Bleed”. The newbie presumption is that “Well, it’ll clear up after engine start” or “Mah, it’s probably something minor” and it ends. The Air Bleed status message is either a minor nuisance or you’re going to be sitting at the gate for two hours until a bunch of tests are run.
There are to many combinations and permutations of system issues that arise that the old adage of “count to ten, slew a piece of paper of the printer, write down the ECAM message” because chance are, the message cleared itself (done! don’t even wonder why it happened) or if it’s still there, follow prescribed procedure and read all the considerations. But when a person with self-ascribed “high systems knowledge” starts going off script, they’ll sometimes find themselves in a variant where none of that applies and then he’s compounded a minor annoyance into “why the deuce are we in alternate law?” with catlike swiftness.