About Trouble Not Found (TNF)

About Trouble Not Found (TNF)

Trouble Not Found metrics is used to measure the performance of a repair process since the technician behavior is not directly recorded, analyzed, or utilized in the context of the Quick Serve repair process. These metrics indicate whether a repaired part was properly diagnosed and replaced and serve as a proxy to overall repair efficiency. When a replaced part is found not to be the root cause of the failure, the part is marked as TROUBLE NOT FOUND (TNF).

Base Business Rules

When a replaced part is found not to be the root cause of the failure, the part is marked as TROUBLE NOT FOUND (TNF).
TNF Rate = TNF Failures/ Total Failures with parts Analyzed

Bucketing and Grading Rules

The Service Providers has been ranked based on their TNF Performance. The Service Providers are ranked every month based on their previous 12 months’ TNF performance.

 


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