2008

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Track 3 Session 11
10:30 to 11:30 a.m. Thursday June 19, 2008

Keeping Field Data Simple(r) – TTR and a Simple Analysis

There are often two extremes in field data analysis, either a simple assumption of a constant replacement rate (accumulated hours/replacements) or complex statistics. This presentation explains an approximation method that uses the knowledge of when serial numbers were installed, the run month in which the serial number had a replacement (determined by a database) and a relatively simple analysis based on a spreadsheet. While this yields only approximated results, it gives far more usable information than a constant rate assumption. It does not require the user to perform statistics, or maybe more importantly, it does not require the customer of the information to understand statistical output.

Key Words: Simplified Field Data Analysis