Aerospace Logistics: What Makes Moving Aircraft Parts Different

Most freight is judged on one question: did it get there. An aircraft part is judged on three. Did it get there, can it be identified, and can it be signed onto the aircraft. A shipment that clears the first and fails the second or third is a grounded aircraft with a box sitting next to it.

That is the part of aerospace logistics that generic expedited freight keeps missing. The driving is the easy half. The half that decides whether the aircraft flies today is made of documents, markings, packaging specifications and mode restrictions, and every one of them is written down somewhere you can check.

Aircraft Parts vs Ordinary Freight: What Actually Changes

Four things change, and none of them is speed.

The last row is why the rest of them matter. On a grounded aircraft the hourly cost of the delay is visible to everyone in the room, which is the subject of what AOG actually means and who moves the part. The first three rows are what turns a fast delivery into an installed part.

Which Documents Actually Travel With an Aircraft Part?

Most articles written about aerospace freight say the documentation has to stay with the part. Very few say what the documentation is. Here are the three that come up on nearly every move, with the source for each.

The Maintenance Record Entry

When anyone maintains, repairs, rebuilds or alters an aircraft, an engine, a propeller, an appliance or a component part, 14 CFR 43.9(a) requires an entry in that equipment’s maintenance record containing four things: a description of the work performed or a reference to data acceptable to the Administrator, the date the work was completed, the name of the person who did the work if that is someone other than the person approving it, and the signature, certificate number and kind of certificate held by the person approving the work. The regulation is explicit about what that signature does and does not do: “The signature constitutes the approval for return to service only for the work performed.”

Read that last line twice, because it is the sentence that turns a box into an installable part. Return to service attaches to the work, not to the shipment. If the record is not with the part, the receiving shop is holding a component it cannot account for.

FAA Form 8130-3

The document people mean when they say “the tag” is FAA Form 8130-3. Its official title, in the FAA’s own register of forms, is Authorized Release Certificate, Airworthiness Approval Tag, it is administered by AIR-632, and it is listed as active.

One honest caveat, because it changes how you should read other articles on this subject. The Code of Federal Regulations does not name the form. 14 CFR 21.325(b) says only that “The FAA prescribes the form and manner in which an export airworthiness approval for an aircraft engine, propeller, or article is issued.” The form number comes from the FAA’s forms register, not from the CFR text, and anyone citing the CFR for the number is citing something that is not there. What the part actually needs is set by the receiving shop, the operator’s procedures and the destination country, so ask the consignee rather than assuming.

Where the Part Came From

This one is upstream of the shipment and it decides whether the part is installable at all. Under 14 CFR 21.9(a), if a person knows or should know that a replacement or modification article is reasonably likely to be installed on a type-certificated product, they may not produce that article unless it is produced under a type certificate, produced under an FAA production approval, a standard part such as a nut or bolt manufactured in compliance with a government or established industry specification, a commercial part as defined in 21.1, produced by an owner or operator for maintaining or altering that owner or operator’s product, fabricated by an appropriately rated certificate holder with a quality system and consumed in a repair or alteration under part 43, or produced in any other manner approved by the FAA.

Seven routes, and the part in the crate came from one of them. Traceability exists to answer which. A carrier does not create that answer, but a carrier can absolutely destroy it by separating the part from its records at a dock.

Which of these applies depends on the category of the part. A rotable that cycles between aircraft and shop carries a different record set from a consumable that is fitted once, and we go through that split in rotables, repairables, consumables and expendables.

What Does a Part Crossing Into Canada Need That a Domestic Move Does Not?

Subpart L of 14 CFR part 21 covers export airworthiness approvals. 14 CFR 21.321 states its scope plainly: it prescribes procedural requirements for issuing export airworthiness approvals and rules governing the holders of those approvals.

Three things in that subpart matter to whoever is arranging the truck:

• Who can apply. Under 21.327(b), any person may apply for an export airworthiness approval for an aircraft engine, propeller or article, and under 21.327(c) each applicant must apply in a form and manner prescribed by the FAA. For a whole aircraft, 21.327(a) limits it to the owner of a U.S.-registered aircraft or the owner’s agent.
• What the article has to be. Under 21.331(a) a new engine, propeller or article manufactured under part 21 can get an export airworthiness approval if it conforms to its approved design and is in a condition for safe operation; 21.331(c) extends the same test to a used engine, propeller or article.
• Where deviations go. Under 21.331(b), an article need not meet that requirement if the importing country or jurisdiction accepts the deviation in a form and manner acceptable to the FAA and the approval lists as an exception any difference between the article and its approved design. The exception is written on the approval, not agreed verbally at the crossing.

Note what 21.325(a) says about a whole aircraft, since it catches people out: an export airworthiness approval for an aircraft is issued as an export certificate of airworthiness, and that certificate does not authorise operation of the aircraft.

None of this is the carrier’s paperwork, and that is exactly the point. It has to exist before the truck is loaded, because a border is a bad place to discover a document is missing. The customs side of the same crossing, and what it is that actually holds trucks at the line, is in cross-border expedited freight between the US and Canada.

Which Aircraft Parts Cannot Fly at All?

Here is the part of aerospace logistics that most people get backwards. The instinct on a grounded aircraft is to put the part on the next aircraft out. For some articles that is not an option the regulation leaves open, and ground is not the slower choice, it is the only legal one.

Chemical Oxygen Generators

These sit in the cabin ceiling and drop the passenger masks. 49 CFR 173.168(f)(1) is one sentence: “A chemical oxygen generator is forbidden for transportation on board a passenger-carrying aircraft.” Under 173.168(f)(2) it is forbidden on passenger-carrying and cargo-only aircraft alike after the manufacturer’s expiration date or once the contents have been expended.

And the exception in 173.168(g) is written for a truck. An unapproved chemical oxygen generator with only one positive means of preventing unintentional actuation, without the required approval number marked on the outside of the package, “may be transported by motor vehicle, railcar, and cargo vessel only” under stated conditions, one of which, at 173.168(g)(3)(ii), is that each outer package and overpack must be visibly and durably marked “THIS PACKAGE IS NOT AUTHORIZED FOR TRANSPORTATION ABOARD AIRCRAFT”. A package wearing that marking has already had the mode decision made for it.

Lithium Above the Air Limits

Avionics units, emergency locator transmitters and portable equipment bring lithium with them. The excepted-quantity limits that apply generally are 20 watt-hours for a lithium ion cell and 100 watt-hours for a lithium ion battery, 1 gram of lithium content for a lithium metal cell and 2 grams for a lithium metal battery.

49 CFR 173.185(c)(1)(iv) then opens a door that exists only on the ground: “For transportation by highway or rail only, the lithium content of the cell and battery may be increased to 5 g for a lithium metal cell or 25 g for a lithium metal battery and 60 Wh for a lithium ion cell or 300 Wh for a lithium ion battery, provided the outer package is marked: ‘LITHIUM BATTERIES—FORBIDDEN FOR TRANSPORT ABOARD AIRCRAFT AND VESSEL.’”

Three times the lithium content and three times the watt-hours, in exchange for a marking that rules out the aircraft and the vessel. That is a real, written, checkable reason a component sometimes moves by road while the aircraft waits, and it has nothing to do with truck speed. The classification work that decides which of these your part falls under is the subject of aircraft component logistics; get it wrong in the other direction and the shipment is refused at the air carrier’s counter, not at ours.

What Container Does the Regulation Itself Name?

Packaging for aircraft articles usually gets described as “proper” and left there. For chemical oxygen generators the regulation is specific. 49 CFR 173.168(d)(1) requires a rigid outer packaging conforming either to part 178, subparts L and M, at the Packing Group I or II performance level, or to the performance criteria in Air Transport Association (ATA) Specification No. 300 for a Category I Shipping Container.

An industry container specification named inside the hazardous materials regulations is worth knowing about, because it is the answer to “what do you mean, the right box.” Where the shipment moves by cargo-only aircraft, 173.168(d)(2) adds that the packaging with its contents must be capable of meeting the flame penetration resistance test in appendix E to part 178 and the thermal resistance test in appendix D.

The practical version for anyone booking a truck: the container is part of the shipment’s compliance, not a detail to improvise at pickup. If a part arrives at the dock in a box that does not match what it needs, repacking is not a favour, it is a decision with a regulation behind it.

What Actually Delays an Aircraft Part?

Speed on the road is rarely what grounds the delivery. The delays that hurt sit around the driving.

• Records out of sync with the part. The truck was on time, the maintenance record entry is not there, and the install cannot start. This is the single most common way a delivery that met its ETA still fails.
• Every handoff is a place to sit. Each transfer between vehicles, docks or carriers is a queue, and it is also the moment records and article get separated.
• The border discovered late. A part heading to a Canadian shop needs its export and customs documents moving ahead of the truck. If they start moving when the truck arrives, the crossing is the delay.
• A mode that was never available. An expired oxygen generator or an over-limit lithium battery booked onto a flight does not leave. The hours lost are the hours spent finding out.
• The wrong vehicle. A part that needs enclosed transport or does not fit without repacking means someone waits for the right truck. That is time the aircraft does not have.

How Is the Move Built Backward From the Install?

The way to keep records, packaging and mode intact is to keep the move simple. One driver, one vehicle, one set of hands from pickup to delivery. No transfers and no docks, so the article and its records cannot be separated, because there is no point at which they are handled apart.

Single custody also keeps the timeline honest. You know where the part is and when it lands, which matters when someone on the maintenance line is asking by the hour. On a cross-border move the documents go ahead so the crossing is cleared before the truck arrives. The vehicle is matched to the part before it moves: enclosed for sensitive components, sized for crated assemblies so nothing is repacked in transit. What exclusive use buys, in plain terms, is set out in dedicated freight and what exclusive use actually gets you, and where handling matters more than speed, in white glove freight.

Who Offers Expedited Freight for Aerospace AOG Parts?

Four kinds of company answer that phone, and they are not interchangeable: a freight forwarder, a broker, a hand-carry courier and a dedicated carrier. Which one is right depends on the part, the distance and the clock, and the comparison is laid out in who actually moves an AOG part and, from the buying side, in what an MRO buyer is really comparing.

The mode question sits underneath all of it. Next flight out follows the airline schedule, a hand-carry buys a seat next to the part, air charter buys the aircraft, and dedicated ground buys a vehicle that leaves now and does not stop. The cut-offs between them are worked through in AOG parts delivery: next flight out, hand-carry or dedicated ground and in what an hour actually costs across the three. Where the arithmetic lands in ground’s favour is in when ground is faster than air, and what the number on the quote is built from is in what AOG parts shipping costs.

What Should You Have Ready Before You Call?

A move gets built faster when these are on the table at the first call:

• What the article is, by part number and serial number where it has one, and its category.
• Whether it contains lithium, an oxygen generator, an accumulator, residual hydraulic fluid or anything else that classifies as a hazardous material, and in what quantity.
• What records are travelling with it, and whether they are physically with the part or arriving separately.
• Packaging and dimensions as it will actually be handed over, including whether it is already in a container that meets a named specification.
• Both ends: where the part is standing now, who receives it, and whether the receiving end is open when the truck lands.
• The deadline that matters, which is the start of the install, not the delivery window.

Where Does Vic’s Fit?

Aerospace is one of the verticals Vic’s is built for: AOG and aircraft-part moves on dedicated, enclosed ground across the US and Canada, kept in single custody so the article and its records stay together from pickup to the maintenance line. We build the move backward from the install, which means asking about records, classification and packaging before we talk about the truck.

Get an instant quote. Tell us the part, where it is now and where the aircraft is, and we will tell you what the move needs before it needs it.

Aerospace Logistics: Common Questions

What documentation travels with an aircraft part?

At minimum the maintenance record entry required by 14 CFR 43.9(a): a description of the work, the date it was completed, the name of the person who did it, and the signature, certificate number and kind of certificate of whoever approved it. Most shops also expect FAA Form 8130-3, the Authorized Release Certificate, Airworthiness Approval Tag. Confirm the set with the consignee before pickup.

What is FAA Form 8130-3?

It is the form listed in the FAA’s forms register as Authorized Release Certificate, Airworthiness Approval Tag, administered by AIR-632 and currently active. Note that the CFR does not name it: 14 CFR 21.325(b) says only that the FAA prescribes the form and manner in which an export airworthiness approval for an engine, propeller or article is issued.

Can every aircraft part be flown?

No. A chemical oxygen generator is forbidden on a passenger-carrying aircraft under 49 CFR 173.168(f)(1), and after its expiration date or once expended it is forbidden on cargo aircraft too. An unapproved generator may move by motor vehicle, railcar and cargo vessel only, in a package marked THIS PACKAGE IS NOT AUTHORIZED FOR TRANSPORTATION ABOARD AIRCRAFT.

Why would a part move by road when the aircraft is grounded?

Sometimes because road is quicker door to door, and sometimes because it is the only mode open. Under 49 CFR 173.185(c)(1)(iv), highway or rail transport allows 5 g of lithium content for a metal cell, 25 g for a metal battery, 60 Wh for an ion cell and 300 Wh for an ion battery, against 1 g, 2 g, 20 Wh and 100 Wh generally, provided the outer package carries the aircraft-and-vessel prohibition marking.

What packaging does an aircraft part need?

It depends on the article. For chemical oxygen generators, 49 CFR 173.168(d)(1) requires a rigid outer packaging meeting either part 178 subparts L and M at Packing Group I or II, or the performance criteria in ATA Specification No. 300 for a Category I Shipping Container. For lithium cells and batteries the packaging rules sit in 49 CFR 173.185. Establish the classification first; the container follows from it.

Does a part going to a Canadian shop need anything extra?

Usually an export airworthiness approval, covered by 14 CFR part 21 subpart L. Any person may apply for one for an engine, propeller or article under 21.327(b), and under 21.331 the article must conform to its approved design and be in a condition for safe operation, with any accepted deviation listed on the approval as an exception. Have it before the truck loads, not at the crossing.