Should I include a supplier promise with an uncertain date?

Exclude it until its usable receipt before the need date is confirmed. You can run a separate scenario for uncertain receipts.

Can stock reserved for another program be counted?

No. Only include stock allocated to this demand, otherwise both programs would claim the same coverage.

Does uncovered acquisition value estimate a line stoppage loss?

No. It values the missing units at your acquisition cost. Lost output, expedite charges and delay costs require separate estimates.

Where did the old supplier severity ratings go?

Measured part demand and supply replace the ordinal ratings. The retained low and high scenario links now compare required quantities; no score conversion is implied.

Aerospace & Defense Manufacturing calculator

Aerospace Supplier Shortage Exposure Calculator

Check a supplier delivery plan against a specific part need. Enter required units, usable allocated stock, confirmed on-time receipts and acquisition cost.

What this calculator does

Measure uncovered part demand and its acquisition value using allocated stock and confirmed receipts before a common need date.

Formula used

Covered units = min(required units, usable stock + on-time receipts)
Uncovered units = max(0, required units − usable stock − on-time receipts)
Demand coverage = covered units ÷ required units × 100
Uncovered acquisition value = uncovered units × cost per unit

Inputs explained

Units Required by Need Date: Approved demand for one interchangeable part by its need date.
Usable Stock for This Demand: Accepted stock allocated exclusively to this demand.
Confirmed Receipts Before Need Date: Accepted usable receipts confirmed before the same need date.
Acquisition Cost per Unit: Recorded acquisition cost for the uncovered part.

How to use the result

Best suited to delivery recovery Review, critical part coverage.
This is not a supplier risk score or probability of disruption. Late, unapproved or uncertain receipts must be excluded. Legacy impact scenarios now vary measured required quantity.

Current U.S. benchmarks

Steel mill PPI stands at 381.162 (BLS, Aug 2026), up 23.4% from a year earlier. New factory orders are up 8.5% year over year (Census).
The U.S. has 11,691 transportation equipment establishments employing about 1,682,910 workers (Census County Business Patterns, 2023).

Common questions

Should I include a supplier promise with an uncertain date? Exclude it until its usable receipt before the need date is confirmed. You can run a separate scenario for uncertain receipts.
Can stock reserved for another program be counted? No. Only include stock allocated to this demand, otherwise both programs would claim the same coverage.
Does uncovered acquisition value estimate a line stoppage loss? No. It values the missing units at your acquisition cost. Lost output, expedite charges and delay costs require separate estimates.
Where did the old supplier severity ratings go? Measured part demand and supply replace the ordinal ratings. The retained low and high scenario links now compare required quantities; no score conversion is implied.

Last reviewed 2026-10-06.