Beyond economic repair

The comparison behind the call

A BER determination compares the estimated cost of restoration against the value of the restored asset. In practice the inputs are:

• The repair estimate — what the shop says it will cost, after evaluation and usually after some disassembly.
• The market value of a serviceable unit — what an equivalent unit currently costs to buy or exchange.
• Remaining life — for life-limited or hard-time items, how much service the restored unit would actually deliver.
• Time — a repair that would meet the threshold on cost may still fail it on turn time if the customer needs the aircraft now.
• Salvage value — what the unit is worth as a source of serviceable sub-components, which is sometimes more than its value as a whole.

A common commercial shorthand is to express the threshold as a percentage of the replacement or exchange value. The specific percentage is a matter of contract and company policy, not an industry constant, and it varies widely by part type and by how the parties share risk.

Why the same unit gets different answers

BER is genuinely party-dependent, which surprises people the first time they encounter it:

• A shop with the capability, the tooling and the parts on hand may repair economically what another shop cannot.
• An organization holding a pool of the same part may see salvage value that a one-off owner does not.
• A customer with an AOG aircraft values turn time differently from one restocking a shelf.
• Market value moves. A unit that was BER last year may be worth repairing when serviceable stock tightens.

BER and exchange cores

This is where BER most often becomes contentious, because it converts a technical assessment into a bill.

When a returned exchange core is assessed as beyond economic repair, the supplier has not received the repairable asset the exchange was priced on. Depending on the agreement that may mean a full core charge, a partial credit, or a negotiated position — and the customer will frequently disagree.

Two things reduce the friction more than anything else: exchange terms that state in advance what condition a core must meet, and inspection evidence good enough to support the conclusion if it is challenged weeks later.

Documentation and disposal

A BER conclusion has consequences beyond the invoice:

• Evidence. The findings supporting the determination should be recorded well enough to stand up to a counterparty review.
• Scrap control. Responsible practice is to render scrapped material permanently unusable — mutilation — so that it cannot re-enter the supply chain as apparently serviceable stock. Preventing unapproved parts from circulating is precisely why this matters.
• Records. The unit's history should reflect that it was scrapped, so its serial number cannot later reappear against a different asset.
• Inventory. The unit comes out of stock and the write-down is recognized.

Common misunderstandings

BER does not mean unrepairable

It means not worth repairing on these numbers, for this party, today. That is an economic statement with a shelf life.

There is no universal threshold

Percentages vary by contract, by part type and by company. Anyone quoting a single industry-standard figure is describing their own convention.

BER is not automatically the customer's fault

A core can be BER through ordinary service life rather than mishandling. Exchange terms exist to allocate that risk in advance, which is exactly why vague terms produce disputes.

Scrapping is not just disposal

A BER unit that leaves the building intact and undocumented is a supply-chain risk. Mutilation and record-keeping are the point, not administrative overhead.