This page explains how Kim Nguyen (USATT# 48032)'s rating went from 1961 to 1953 at the P&W Aircraft TT Club November 2011 Open held on - 12 Nov 2011. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.