I always thought the difference was the in-seat power supply...They don’t have life rafts, so only do domestic flights.
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The YF series don’t have any overhead stowages for rafts in the ceilings, it’s a continuous strip of sky interior lighting from front to back. Pre-covid it was only ever aircraft in the YI blocks that did the Pacific/NZ/Bali flying.I always thought the difference was the in-seat power supply...
Some great tools yes, but they also left out some handy options with the FMC. Overall though they’re exactly the same. Pretty much every one of their “optional extras” has been deactivated.I think I read somewhere on here that the Silkair birds also have extra modifications in terms of the flight deck and extra tools available