How do you calculate nonconformance cost?

Multiply NCRs raised by the disposition cost per NCR, then by the fraction that reaches full MRB, and add fixed quality overhead. With 35 NCRs at $1,800 each, 60% reaching MRB, plus $6,000 overhead, total cost is $43,800.

What is a good nonconformance cost per NCR?

There is no universal target, but flight-hardware shops often see $800-$2,500 per NCR when full MRB, engineering disposition, and re-inspection are loaded in. In this example the blended figure is $1,251.43 per NCR.

Why is the share reaching full MRB so important?

Minor NCRs close with a quick use-as-is, but MRB-bound ones pull in a board, engineering analysis, and often customer concurrence. At 60% MRB share, the variable cost is $37,800 of the $43,800 total — driving that share down is the biggest lever.

Does this include the cost of scrapping a flight unit?

Only as an average. The disposition cost per NCR is a blended number; a catastrophic scrap of a flight payload can exceed the mean by an order of magnitude and should be modeled separately.

What counts as quality system overhead here?

Fixed costs that do not scale with NCR volume — QA management, the NCR/MRB software system, audit prep, and configuration control. Here that fixed adder is $6,000.

How can I reduce total nonconformance cost?

Attack the two variable drivers: reduce NCRs raised through process control and incoming inspection, and reduce the MRB share by catching defects at a stage where use-as-is or simple rework is allowed.

Space Payload & Avionics Manufacturing calculator

Nonconformance Cost Calculator

Nonconformance cost captures what your quality system actually spends turning nonconformance reports (NCRs) into closed dispositions on a flight hardware program. In space payload and avionics work, every use-as-is, rework, or scrap decision drags in engineering, MRB boards, and traceability paperwork that dwarfs the touch-labor cost. Quality managers and program cost accounts use this figure to defend NCR headcount, target the escape rate driving MRB load, and price quality into a build. Because a single MRB-bound NCR on a flight unit can run into thousands of dollars, knowing your true per-NCR burden is the difference between a defensible quote and a burned margin.

What this calculator does

Estimates the cost of processing and dispositioning nonconformances across a flight hardware build.
A quality engineer forecasting the labor and MRB burden a noisy build will impose on the program budget.
It computes total nonconformance cost as NCRs raised times disposition cost per NCR times the share that reaches full MRB, plus fixed quality-system overhead, and divides by NCR count for a per-NCR figure.

Formula used

Total cost = NCRs raised x disposition cost per NCR x share reaching MRB + quality overhead
Cost per NCR = total cost / NCRs raised

Inputs explained

Nonconformance Reports Raised:
Disposition Cost per NCR:
Share Reaching Full MRB:
Quality System Overhead:

How to use the result

Use it when budgeting a quality organization for a flight build, forecasting NCR spend across a production lot, or comparing supplier-driven versus in-house escape costs.
It treats all MRB-bound NCRs as one average disposition cost; a handful of scrap-a-flight-unit dispositions can be 10x the mean and will not show in a blended rate.

Current U.S. benchmarks

Global copper trades at $13,484 per tonne (IMF via FRED, May 2026), up 41.5% in a year, and U.S. industrial electricity averages 8.66 cents per kWh. Both feed electrified-hardware unit economics.
Steel mill PPI stands at 348.53 (BLS, May 2026), up 6.7% from a year earlier. New factory orders are up 2.3% year over year (Census).

Common questions

How do you calculate nonconformance cost? Multiply NCRs raised by the disposition cost per NCR, then by the fraction that reaches full MRB, and add fixed quality overhead. With 35 NCRs at $1,800 each, 60% reaching MRB, plus $6,000 overhead, total cost is $43,800.
What is a good nonconformance cost per NCR? There is no universal target, but flight-hardware shops often see $800-$2,500 per NCR when full MRB, engineering disposition, and re-inspection are loaded in. In this example the blended figure is $1,251.43 per NCR.
Why is the share reaching full MRB so important? Minor NCRs close with a quick use-as-is, but MRB-bound ones pull in a board, engineering analysis, and often customer concurrence. At 60% MRB share, the variable cost is $37,800 of the $43,800 total — driving that share down is the biggest lever.
Does this include the cost of scrapping a flight unit? Only as an average. The disposition cost per NCR is a blended number; a catastrophic scrap of a flight payload can exceed the mean by an order of magnitude and should be modeled separately.
What counts as quality system overhead here? Fixed costs that do not scale with NCR volume — QA management, the NCR/MRB software system, audit prep, and configuration control. Here that fixed adder is $6,000.

Last reviewed 2026-05-12.