What is AOG (Aircraft on Ground)?

AOG (Aircraft on Ground) is an emergency logistics situation where an aircraft is unable to fly due to a missing or faulty component, requiring urgent parts delivery to restore operational status. In the UK aviation industry, AOG calls trigger time-critical courier operations with zero tolerance for delay, often costing operators thousands of pounds per hour of downtime.

Clear Definition: AOG (Aircraft on Ground)

AOG stands for Aircraft on Ground — a critical situation in aviation logistics where a commercial or private aircraft is unable to operate due to a mechanical failure, missing part, or engineering issue. The aircraft is literally grounded, unable to depart its scheduled route, and every minute of delay impacts airline operations, passenger schedules, crew logistics, and revenue. AOG situations trigger emergency procurement and courier protocols, where specialist logistics providers dispatch urgent parts, components, or equipment to the airport to restore the aircraft to airworthy status.

The term is universally recognised across aviation: from major carriers like British Airways and Ryanair operating from Heathrow, Gatwick, and Luton, to smaller operators at regional airports across the UK. AOG is not a minor inconvenience — it is an operational crisis that demands immediate action.

How AOG Works in UK Aviation Logistics

When an AOG situation occurs, the aircraft operator or maintenance team immediately identifies the required part or component. They contact specialist AOG logistics providers — like T&C Logistics — with a precise specification of what is needed, where it must be collected from, and where it must be delivered (typically to the grounded aircraft's location at one of the UK's 14 major airports: Heathrow, Gatwick, Stansted, Luton, Manchester, Birmingham, East Midlands, Liverpool, Newcastle, Glasgow, Edinburgh, Belfast, Bristol, or Southampton).

T&C Logistics operates 24/7 AOG dispatch capability, meaning we can receive an AOG call at 02:00 on a Saturday morning and have a courier collecting parts from a supplier in central London or the Midlands within 30–60 minutes. Our fleet includes temperature-controlled vehicles for sensitive components, GPS-tracked vans for real-time visibility, and drivers trained in aviation security protocols (including airside access where required). The entire operation is coordinated by our dispatch team to ensure the shortest possible transit time to the aircraft.

Why AOG Matters: The Cost of Delay

Aircraft downtime is extraordinarily expensive. A grounded narrow-body aircraft (like a Boeing 737) can cost an airline between competitive rates and competitive rates per hour in lost revenue, crew costs, passenger compensation, and operational disruption. Even a two-hour AOG delay can cost an operator competitive rates+ in direct losses, not including reputational damage and downstream schedule impacts. This is why AOG logistics is treated as a premium, time-critical service with dedicated resources.

"AOG is the most time-sensitive logistics challenge in UK aviation. A single hour of delay cascades through an entire airline's network. We've built our 24/7 dispatch capability specifically to handle these emergencies — our team understands that every minute counts when an aircraft is on the ground." — Taras, Founder, T&C Logistics

Because the stakes are so high, AOG couriers operate under strict service levels: guaranteed collection within one hour, direct routing with no intermediate stops, dedicated vehicle assignment, and real-time tracking from pickup to delivery. T&C Logistics maintains this standard across all UK airports and major industrial hubs where aircraft parts are sourced.

Practical AOG Examples

Example 1: Engine Component Failure. A Ryanair aircraft at Luton experiences an engine warning light during pre-flight checks. The maintenance team diagnoses a faulty fuel pump (part number available from supplier in Coventry, 45 miles away). At 07:15, they call T&C Logistics. Our team collects the pump at 07:48, reaches Luton by 08:35, and the component is fitted within 10 minutes. Total downtime: ~90 minutes. Without AOG logistics, the aircraft would have been delayed 4+ hours waiting for parts delivery.

Example 2: Avionics Replacement. A British Airways aircraft at Heathrow requires an avionics unit replacement. The part is held at a supplier in Slough (20 miles from Heathrow). An AOG call is placed at 14:30. T&C Logistics collects at 14:58, delivers to the aircraft stand at 15:22. Engineering team installs the unit during a scheduled maintenance window. The aircraft departs only 45 minutes late instead of a planned 6-hour delay.

Related Logistics Terms

AOG Support: Specialist courier and logistics services designed specifically for aircraft emergency situations, typically available 24/7 with guaranteed rapid response times.

Aviation Supply Chain: The network of suppliers, engineers, warehouses, and logistics providers that support aircraft maintenance and repair operations.

Temperature-Controlled Delivery: Essential for AOG situations involving sensitive avionics, hydraulic components, or electronics that must be transported in controlled environments to prevent damage.

Airside Access: Authority to drive or deliver cargo directly to aircraft parking stands (aprons) at commercial airports — a specialist capability T&C Logistics maintains across major UK airports.

Get a free quote

Every shipment is different — we quote based on your exact requirements with no hidden fees. For AOG situations, our 24/7 team responds instantly to urgent calls.

• Call: +44 7963 400173 (06:00–17:00) or +44 7737 778964 (08:00–22:00) — ask for AOG dispatch
• Online: Request a quote — we respond within 15 minutes