GlossaryEN1 min readUpdated: Jun 16, 2026
AOG (Aircraft On Ground)
A hydraulic valve missing in Jakarta, an aircraft sitting idle, and mounting losses by the hour – this is the AOG scenario.
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Source: https://www.iata.org
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A hydraulic valve missing in Jakarta, an aircraft sitting idle, and mounting losses by the hour – this is the AOG scenario. AOG (Aircraft On Ground) is an aviation emergency status indicating that an aircraft cannot operate due to a technical failure or missing component, requiring the fastest possible logistics response to return it to service. Airlines and MRO (Maintenance, Repair & Overhaul) operators treat AOG as the highest operational priority, instantly overriding standard freight queues. Dedicated AOG desks run around the clock, coordinating expedited airfreight, on-board couriers, and fast-track customs clearance in parallel rather than in sequence. The term is specific: AOG ties a shipment directly to a grounded aircraft and triggers a different class of response compared with general time-critical freight.
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