"Unfortunately, our Boeing 787 fleet has been impacted by a number of issues, including a lightning strike, a bird strike, damage from an item on the runway and delays sourcing a specific spare part for one of our aircraft due to global supply chain challenges. The part has to be road freighted across the US..."
Source: Jetstar chief pilot Jeremy Schmidt, explaining why the airline grounded several of its Boeing 787s after a handful of technical issues, from regular operational woes like bird strike damage, lighting strike, and FOD related issues left the aircraft awaiting replacement parts from the USA.