How do you calculate depot repair yield?

Divide repaired units passing final test by depot repair attempts and multiply by 100. With 138 passing out of 162 attempts, that is 138 / 162 x 100 = 85.19% repair yield.

What is a good depot repair yield?

Well-run electronics and instrument depots typically target 90-95%. The example's 85.19% falls 6.81 points below a 92% target, which usually signals diagnostic gaps, marginal parts, or a population of genuinely unrepairable returns.

What counts as a repair attempt?

Any unit that enters the depot repair process and reaches final test, whether it passes or fails. The example's 162 attempts include the 138 that passed and the 24 that did not, so the yield reflects true first-time repair effectiveness.

Why is my depot repair yield below target?

Common drivers are incomplete fault diagnosis, no-fault-found returns, substandard replacement parts, and units beyond economical repair. At 85.19% against a 92% target you have 24 failures on 162 attempts and a 6.81-point gap to close.

What is the difference between repair yield and first-time fix rate?

Depot repair yield measures units passing final test inside the depot. First-time fix rate usually refers to field service resolving an issue on the first on-site visit. Both track repair effectiveness but at different points in the service chain.

How do I improve depot repair yield?

Sharpen diagnostics, screen no-fault-found units earlier, qualify replacement parts, and route recurring failure modes to engineering. Closing the 6.81-point gap on 162 attempts would recover roughly 11 more passing units per batch.

Aftermarket, Field Service & Service Parts calculator

Depot Repair Yield Calculator

Depot repair yield is the percentage of units sent through a repair depot that pass final test and ship back as serviceable. It is a core aftermarket and field-service metric because every repair attempt that fails final test becomes a re-repair, a scrap decision, or an unhappy customer waiting on a swap. Service operations managers and repair engineers watch it to gauge depot effectiveness, size spare-parts and loaner pools, and decide when a product is no longer economical to repair. A strong repair yield keeps turnaround time low and avoids the cost spiral of units bouncing through the depot multiple times.

What this calculator does

Calculate accepted depot repair yield from repaired units passing final test, total repair attempts, and the yield target.
a depot repair manager needs to measure successful repair output from the repair queue
It computes repaired units passing final test as a percentage of depot repair attempts, then the point gap to your target repair yield.

Formula used

Depot repair yield = repaired units passing final test ÷ depot repair attempts × 100
Repair yield gap = depot repair yield - target repair yield

Inputs explained

Repaired units passing final test: undefined
Depot repair attempts: undefined
Target depot repair yield: undefined

How to use the result

Use it per product line, per depot, or per technician group to judge how reliably a repair process restores units to serviceable condition.
It treats every attempt equally and does not separate easy fixes from no-fault-found or unrepairable units, so a hard-to-diagnose product can drag yield down even with a skilled team.

Common questions

How do you calculate depot repair yield? Divide repaired units passing final test by depot repair attempts and multiply by 100. With 138 passing out of 162 attempts, that is 138 / 162 x 100 = 85.19% repair yield.
What is a good depot repair yield? Well-run electronics and instrument depots typically target 90-95%. The example's 85.19% falls 6.81 points below a 92% target, which usually signals diagnostic gaps, marginal parts, or a population of genuinely unrepairable returns.
What counts as a repair attempt? Any unit that enters the depot repair process and reaches final test, whether it passes or fails. The example's 162 attempts include the 138 that passed and the 24 that did not, so the yield reflects true first-time repair effectiveness.
Why is my depot repair yield below target? Common drivers are incomplete fault diagnosis, no-fault-found returns, substandard replacement parts, and units beyond economical repair. At 85.19% against a 92% target you have 24 failures on 162 attempts and a 6.81-point gap to close.
What is the difference between repair yield and first-time fix rate? Depot repair yield measures units passing final test inside the depot. First-time fix rate usually refers to field service resolving an issue on the first on-site visit. Both track repair effectiveness but at different points in the service chain.

Last reviewed 2026-05-12.