AOG (Aircraft On Ground)
AOG is an unplanned aircraft downtime event that demands immediate part delivery; every grounded hour can cost airlines tens of thousands of dollars.
Critical aviation spares, ranging from sensors to engines, must clear customs and reach airports 24/7. Specialist logistics teams mobilise hand‑carry couriers, tactical charters and bonded AOG warehouses. Documentation such as ATA Spec 106 and EASA Form 1, plus IATA DGR rules for lithium batteries, applies even under extreme time pressure.