---
title: "What Should I Check When First-Pass Yield Falls but Final Output Stays on Target?"  
description: "What Should I Check When First-Pass Yield Falls but Final Output Stays on Target?"  
author: "Lachlan Jones"  
published: 2026-10-20  
canonical: https://answers.mindstick.com/qa/117919/what-should-i-check-when-first-pass-yield-falls-but-final-output-stays-on-target  
category: "Mix Category"  
tags: ["manufacturing", "quality control", "Production", "Process improvement"]  
reading_time: 1 minute  

---

# What Should I Check When First-Pass Yield Falls but Final Output Stays on Target?

Our line is still meeting its shipped-output target, but first-pass yield has slipped and the rework station is busier than it used to be. The product mix has changed a little, so I’m not sure whether this points to a process problem or just a shift in what we’re running.

When reviewing a **first-pass yield measurement**, which supporting figures help reveal the cause? I’m especially interested in how teams separate genuine process drift from changes in product mix, inspection criteria, or how rework is recorded.


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Original Source: https://answers.mindstick.com/qa/117919/what-should-i-check-when-first-pass-yield-falls-but-final-output-stays-on-target

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