Description

This article is from the Model Rockets FAQ, by Wolfram von Kiparski with numerous contributions by others.

5.12 How can I tell the age of my Estes motors?

Estes uses a date code on their rocket motors. It's of the form XXYZZ
(example, 25T9) where the first number is the day of the month of
manufacture, the letter is a code indicating year of manufacture, and the
last number is the month (1 = January, 12 = December). Date codes
run progressively through the alphabet, as follows:

           T    1989
           U    1990
           V    1991
           W    1992
           X    1993
           Y    1994
           Z    1995
           A    1996 - Estes cycled back to the beginning of the alphabet
	   

In the early 70's, Estes motors had the actual date stamped on them.

 

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