Aircraft on Ground — What to Do with Urgent Parts

An aircraft is grounded, and every hour costs money. Knowing what to do when an aircraft is grounded and needs urgent parts is essential knowledge for operators, MRO departments, and purchasers: in an AOG situation, there’s no time to waste. Below you’ll find what to do immediately, how logistics works, and what to expect from a specialized forwarder.

An AOG Situation: Every Hour Counts

In an AOG situation (Aircraft on Ground), an aircraft remains grounded until a faulty part is replaced. Costs quickly add up from canceled flights, passenger compensation, and damage to reputation.

AOG stands for Aircraft on Ground: an aircraft that stays on the ground until a defective part is replaced. Costs escalate rapidly—due to canceled flights, replacement aircraft, passenger compensations, and reputational harm to the operator. A Boeing 737 grounded for a day can cost tens of thousands of euros, not counting indirect impacts.

Every link in the chain must work flawlessly: from warehouse to airport, customs to ground handler. One delay in documentation or a missed flight means another night grounded.

This demands a different approach to logistics than regular air cargo shipments. Different booking priorities, different customs routes, and a different level of availability from the forwarder.

First Steps After an AOG Notification

Once an AOG notification comes in, three actions are immediately decisive: identify the exact part, check export restrictions, and promptly engage a specialized forwarder.

Immediate action determines how fast the plane will be back in the air. The first minutes shape the entire process.

Accurately Identify the Required Parts

Identify the part as accurately as possible: part number, serial number, dimensions, weight, and the corresponding HS code. An incorrect HS code slows customs clearance—and you can’t afford that delay. For example, if a part is classified under the wrong HS code and is held at Schiphol for verification, that could take hours while the maintenance team waits.

Also document the exact origin of the part. Is it from your own warehouse, a supplier, or an AOG pool? The location of origin partly determines which flight connections are available.

Check Export Restrictions and Permits

Aircraft parts sometimes fall under dual-use regulations or other export control regimes. Before shipping, verify whether an export license is required—especially for parts with military applications or advanced technology.

Dangerous goods (DGR) deserve immediate attention. Hydraulic fluids, lithium batteries, or certain composite materials require specific DGR documentation. A mistake here will block the shipment at the moment every minute counts.

Engage an AOG Specialist Immediately

A specialized forwarder has the contacts with airlines, ground handlers, and customs needed to get an AOG shipment moving. This is not a luxury but a necessity: without these contacts, you lose precious hours to waiting and manual coordination.

Contact the forwarder as soon as the AOG notification arrives—not after you’ve spent an hour trying to find flights yourself. The earlier the specialist is involved, the greater the chance of a next-flight-out booking the same day.

How AOG Freight Logistics Differs from Regular Air Freight

AOG shipments follow a separate regime: higher flight priority, stricter documentation requirements, and the option of charters—all focused on minimizing aircraft ground time.

AOG shipments have different prioritization, booking, and documentation compared to standard cargo.

Flight Priority vs. Standard Bookings

With regular air freight, you accept that a shipment might depart a day later due to overbooking. With AOG, that’s not an option. Airlines treat AOG shipments as highest priority, giving them precedence over existing reservations—provided the forwarder has the right contacts and documentation is correct.

This requires direct communication with the airline’s cargo department or the ground handler at the airport. A forwarder with established relationships arranges this significantly faster than an operator calling independently.

Next-Flight-Out and Charter Options

Next-flight-out (NFO) means the part ships on the next available flight, regardless of the regular schedule. For a small actuator or a set of brake pads, this works excellently: fast, affordable, and effective.

For large or heavy parts—a engine, landing gear, a wing component—a charter flight is sometimes the only option. Charters provide the needed cargo space and timing flexibility but require quick decisions and well-coordinated arrangements with the charter company.

Documentation Under Time Pressure

Every air freight shipment requires an Air Waybill (AWB), packing list, and commercial invoice with the HS code. For AOG, these documents must be prepared quickly and without errors. An incorrect AWB or missing DGR declaration will hold up the shipment at the exact moment the aircraft is waiting.

An experienced forwarder prepares these documents simultaneously with the booking, avoiding delays between flight confirmation and cargo release.

Customs and Compliance in Urgent Shipments

For urgent aircraft parts, customs clearance is the most critical link: AEO certification, temporary import via carnet ATA, and 24/7 availability determine whether your shipment waits minutes or hours at the border.

Customs handling is one of the most critical links in AOG shipments. Proper certification and preparation make the difference between minutes and hours of waiting.

AEO Certification Speeds Up Clearance

AEO stands for Authorized Economic Operator: a certification indicating that a company is reliable and compliant in international goods flow. AEO-certified forwarders benefit from simplified customs procedures and faster handling—a concrete advantage when a part arrives from Miami to Schiphol and must clear customs urgently.

Aircargo.nl is AEO-certified. In practice, this means faster release of shipments and fewer random checks that could delay the AOG process.

Temporary Import and Carnet ATA

Aircraft parts returning to their country of origin after repair qualify for temporary import via a carnet ATA. This customs document replaces the full declaration and prevents import duties on parts that leave the country again.

For MRO companies and operators regularly performing international repairs, knowledge of the carnet ATA system is essential. A specialized forwarder handles this as part of their AOG services.

What to Do for After-Hours Import

AOG situations don’t respect office hours. An aircraft grounded on the night between Saturday and Sunday demands the same speed as on a weekday—parts arriving at Schiphol overnight should not wait until Monday morning for release.

A forwarder with 24/7 availability can submit customs declarations and coordinate with customs authorities outside regular hours. Without that availability, the part waits at the border until services resume—and so does the aircraft.

Schiphol’s Role as an AOG Hub

Thanks to over 120 direct cargo connections and a high concentration of airlines and ground handlers, Schiphol is one of Europe’s most efficient AOG hubs for time-critical air cargo shipments.

Schiphol is one of Europe’s leading cargo airports and a natural hub for AOG shipments. Its combination of direct connections to over 120 destinations and a dense presence of airlines, handlers, and forwarders makes it ideal for time-sensitive cargo.

Aircargo.nl is based in Aalsmeer, right next to Schiphol. This provides practical advantages: short driving distances to cargo handling, direct contacts with ground handlers on site, and the ability to react quickly when capacity frees up or a flight shifts. Think of a part cleared in the afternoon that needs to be on a flight to Dubai that same evening.

Additionally, being near Schiphol makes it easier to consolidate or forward AOG parts via crosstrades—shipments where Schiphol serves as a transit point, not the final destination. This opens additional routing options when direct flights aren’t available. This routing flexibility is one reason air freight specialists prefer Schiphol over other European hubs for complex AOG shipments.

What to Expect from an AOG Forwarder

An AOG forwarder delivers more than a flight number: expect a dedicated point of contact, real-time shipment tracking, and proactive communication on any delays in the chain.

A good AOG forwarder offers more than just a flight number. You should expect tangible service that matches the urgency of your situation.

Dedicated Contact, Not a Call Center

In an AOG, you don't have time to explain your situation repeatedly to different agents. You deserve one dedicated point of contact who knows your case, your part, and acts immediately—someone who calls you back with a solution, not a ticket number.

Aircargo.nl prioritizes personal contact. No call centers, no transfers to generic helpdesks. You speak directly to the person managing your shipment.

Real-Time Visibility of Your Shipment

You want to know at any moment where the part is: on the warehouse floor, in the aircraft, or with customs at the destination. Precision tracking—also called shipment visibility or shipment monitoring—is not an extra service but a basic requirement in AOG logistics.

This real-time visibility gives you the information needed to plan your operation. When will the maintenance team be ready? When will the aircraft be back in service?

Proactive Communication on Delays

Not every AOG shipment goes smoothly. Flights can be delayed, customs may request additional information, or connecting flights may be canceled. What you expect then is that the forwarder calls you proactively with alternatives—not that you have to chase information yourself.

Aircargo.nl is independent of airlines and agents. When choosing routes, no preference is given to any single carrier: the fastest and most reliable route is selected based on the situation, not commercial interests.

Preventing AOG Shipments: What You Can Arrange in Advance

The impact of an AOG situation can be greatly reduced by setting agreements with a dedicated forwarder beforehand and strategically positioning critical spares close to your operational airports.

Prevention is better than firefighting, even in aviation. A few practical preparations significantly lessen the impact of future AOG events.

Build a solid relationship with an AOG forwarder before you actually need one. Agree on response times, communication lines, and documentation requirements. When the AOG notification arrives, your forwarder already knows who you are, what fleet you operate, and what you need. This immediately saves you 15 minutes of explanation at the worst possible time.

Also consider maintaining limited stock of critical spares near the airports where your fleet most frequently operates. This noticeably shortens the logistics chain for an AOG. Combining preparation with a reliable forwarder makes the difference between hours and days of AOG downtime.

Aircargo.nl — AOG and Time-Critical Shipments Without Turbulence

Aircargo.nl handles AOG and time-critical shipments to and from Schiphol, active since 2006 and AEO-certified. With over 120 destinations worldwide, 24/7 availability, and a personal approach, you know you have a forwarder who understands what to do when an aircraft is grounded and needs urgent parts—and acts immediately without detours.

Whether it’s an NFO booking for a small part, a charter for an engine, or a complex customs route with carnet ATA—you have a single point of contact managing the entire coordination. No transfers, no waiting, no uncertainty about your shipment’s status.

Contact Aircargo.nl as soon as an AOG situation arises—or better yet: set up agreements today for when it does. We are reachable 24/7 via our contact page or directly by phone.

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Frequently Asked Questions

What Does AOG Mean in Aviation?

AOG stands for Aircraft on Ground and refers to an aircraft that cannot fly because a defective part must be replaced before it can return to service. As long as the necessary part hasn’t been delivered and installed, the aircraft remains grounded—with all operational and financial consequences.

How Quickly Can an AOG Shipment Be Arranged?

A specialized forwarder can act within a few hours on a next-flight-out booking, depending on part availability and flight connections to the destination. Speed depends heavily on how quickly documentation is complete and whether there’s capacity on the next flight. The sooner the forwarder is involved, the greater the chance of same-day shipment.

What Documents Are Required to Ship Aircraft Parts?

For an AOG shipment, you need at minimum: an Air Waybill (AWB), a detailed packing list, a commercial invoice with the correct HS code, and if applicable an export license. If the part contains or qualifies as dangerous goods, a DGR declaration (Dangerous Goods Regulation) is also required. An experienced forwarder prepares these documents together with the flight booking.

Can an Aircraft Part Be Temporarily Imported Without Full Customs Clearance?

Yes, this is possible via a carnet ATA, an international customs document allowing temporary import without paying duties. This is common for parts returning to their country of origin after repair. The carnet ATA replaces the regular customs declaration and speeds up border clearance.

What Is the Difference Between Next-Flight-Out and a Charter Flight for AOG Parts?

Next-flight-out (NFO) means placing the part on the next available flight on an existing cargo service. This is the usual method for small, light parts. A charter flight is used when the part is too large or heavy for available cargo space on regular flights—think aircraft engines or landing gear—or when no suitable regular flight is available within the required time frame.

Why Is an Independent Forwarder Better for AOG Than Booking Directly with an Airline?

An independent forwarder has access to multiple airlines and ground handlers simultaneously and picks the fastest available route objectively, without commercial bias toward one carrier. When booking directly with an airline, you are limited to that carrier’s network and availability. Especially for AOG—where every connection counts—that independence offers a clear advantage in speed and flexibility.