Re the Corsair II, ISTR that the SLUF had the same (NAVWAS?) system as our Jag's, but with the originally spec'd gyro platform, rather than the cheap-and-nasty low cost option we were obliged to buy (along with rubbish, but by jingo British rubbish (remember the Alberts?)) PTR170 comms. Whereas our pilots became very well practised at heads-down, low-level reboots of the entire nav-attack system (those that survived the procedure, anyway...) it was a rare-ish event with the A7. Perhaps someone with actual knowledge can put me right - my memory was never the best.