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Quick summary

Three suppliers quote the same part number and the prices differ by a factor of three. That spread is almost never a mistake and almost never pure greed — it is three different products wearing the same number. Condition, the release document, lead time, warranty and return rights, and who is actually holding the stock all sit inside the figure. A buyer who compares aircraft parts quotes on price alone is not comparing quotes at all. This guide sets out what the number contains and how to line up three offers so the comparison means something.

What a price is actually paying for

Five variables explain most of the spread you will see on a single part number, and they are largely independent of one another. The first is physical condition — new, overhauled, repaired, serviceable, or as removed. The second is the release document that comes with the part, which is a separate question from condition and often the more expensive one. The third is lead time, which is really a question about where the part physically sits today. The fourth is warranty and return rights. The fifth is the supplier’s own position: whether they own the stock, hold it on consignment, or are quoting something they have not yet secured.

Two offers can match on condition and differ on all four of the others. That is the ordinary case, not the exception.

Condition codes are not a price ladder

It is tempting to read the condition code as a ranking where a higher grade always costs more and always serves better. In practice the code tells you what was done to the part, not what it is worth to you. An overhauled rotable with a full shop report and life remaining can be worth more to an operator than a new unit with a long lead time. An as-removed unit with clean records can be worth more than a tested unit with none.

What matters is whether the code, as that supplier uses it, matches what your maintenance programme will accept. Codes are used loosely across the market, so the safe move is to ask what was physically done and who did it, rather than to accept the abbreviation. Our guide to traceability on used serviceable material covers the ground under this in more detail.

The document is often the biggest single line

For many part numbers the largest difference between a cheap quote and an expensive one is the paperwork, not the hardware. A part released on an acceptable airworthiness approval tag from a recognised source, with traceability back to a certificated origin, costs real money to produce and that cost is in the price. A part offered with no paperwork, or with paperwork your authority will not accept, is cheaper because it is not the same product.

This is the single most common way a buyer in a developing market loses money: the cheap quote is accepted, the part arrives, and the authority or the maintenance organisation will not take the release document. The part is then worth scrap value and the freight has been spent. What your own operation can accept is worth settling before you request quotes, not after — see how to check a release document when you have no CAMO of your own.

Lead time is a question about geography

A quote with a short lead time usually means the supplier is holding the part. A longer one means it is being sourced, repaired, or shipped in from somewhere else before it can move to you. Both are legitimate; they are simply different products, and the difference is worth money when an aircraft is on the ground.

The useful question is not “how long” but “where is it now”. A part sitting in a hub with daily connections to your station is a different proposition from the same part sitting inland two transfers away, even when both quote the same number of days. Our note on routing parts through regional hubs explains why the routing, not the distance, drives the outcome.

What is not in the number you were quoted

The quoted figure is rarely the landed cost, and the gap between the two is where budgets quietly fail. Before comparing anything, establish which of the following each supplier has included and which they have not.

What to pin down	Why it moves the price	What to ask for
Incoterm and delivery point	Decides who pays freight, insurance and export formalities	The incoterm named against a specific airport or address
Release document	Often the largest single component of the difference	The exact document type and the releasing organisation
Condition and what was done	Shop work, not the code itself, is what costs	The shop report or a description of the last work performed
Traceability	Gaps in the chain reduce what the part can be used for	Origin of the part and the records that follow it
Life or time remaining	A rotable with little life left is a different asset	Time and cycles since new and since overhaul
Lead time and location	Availability today is worth more than availability later	Where the part is physically located right now
Warranty	Cover length and what it actually pays for varies widely	Duration, start point, and whether freight is covered
Return rights	A non-returnable part transfers all identification risk to you	The return window and the condition for acceptance
Core return, on exchange	An unacceptable core turns an exchange into an outright buy	Core acceptance criteria and the return deadline
Dangerous goods handling	Batteries, chemicals and pressurised items carry extra cost	Whether packing, declaration and handling are in the price
Payment terms and protection	Advance payment to an unknown seller is an unpriced risk	The payment method and what protects the funds

Exchange deserves its own line because the core is a second transaction hidden inside the first — the comparison between exchange and outright purchase sets out when each makes sense. Items with shipping restrictions deserve theirs too: our guide to dangerous goods in parts shipping covers what can quietly add cost and days to an otherwise cheap quote.

How to line up three quotes so the comparison means something

Normalise before you compare. Put every offer on the same delivery term and the same delivery point, add the freight, handling and duties each one will actually incur, and only then look at the totals. Where a supplier has quoted a condition or a document you cannot accept, that offer leaves the comparison entirely rather than sitting at the bottom of the list as the cheap option — keeping it there is how it eventually gets chosen.

Then apply the two judgements that a spreadsheet cannot make for you. The first is risk: an unknown supplier asking for full payment in advance is offering a different product from a verified one whose funds are held until the part is accepted, and the discount rarely covers the difference. Our note on escrow in cross-border parts payments explains the mechanism. The second is time: when an aircraft is grounded, a cheaper quote that arrives four days later is not cheaper.

The practical fix on the request side is to make every supplier answer the same questions in the same form. A structured request produces comparable offers; an email thread produces three documents in three shapes that take an afternoon to reconcile. You can read our checklist on import documents before the part moves, and put the request itself in front of verified suppliers by submitting an RFQ on Aviatrading or by searching the live catalogue to see what is already on the shelf. New listings and open requests are posted as they appear on the Aviatrading channel on Telegram.