3 LEGGED 5-WHY Example - Lockheed Martin Space

How did the SYSTEM/PROCESS contribute to the problem?

What was the DIRECT or specific cause of the problem?

3 LEGGED 5-WHY Example

PROBLEM STATEMENT:

Add Problem Statement

What is the specific cause of the problem? Explain why the problem occurred (e.g. design/drawing error, manufacturing process, assembly/installation instructions):

Therefore

Intermediate Containment

Why?

Therefore

Why?

Therefore

Why?

Therefore

Why?

Why was the problem not DETECTED?

Explain why the problem was not detected by the quality/inspection system (Why did we have an escape?):

Therefore

Why? Why?

Therefore Therefore

Why?

Therefore

Why?

How was the problem introduced? Was there a failure or weakness in a process, procedure, work instruction or standard?:

Therefore

Why?

Therefore

Why?

Therefore

Why?

Therefore

Why?

Mistake Proof Solution

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