Aerotech motor date codes

[JonSivier]

I'm trying to figure out how old some of my Aerotech motors are, especially reloads. I'd like to be able to determine what their date of manufacture is, rather than guessing their relative age based on whether the labeling and packaging look like older ones or newer ones. I'm familiar with a couple of the systems that have been used in the past;

The system using Hexadecimal numbers where the first 2 characters are the last 2 digits of the year and the remaining characters encode the month and day (i.e. 5A399, 5A = 90, 399 = 921, so the date is 9/21/90).

The system using 6 digits encoded yearmonthdaydaymonthyear (i.e. 001976 = 7/19/06).

Some older reloads actually had the date and year stamped on the instruction sheet.

However I have a bunch of reloads with codes like this 05121009 and 03081007. Does anyone know how to interpret these? I suppose it could be monthmonthdaydayyearyear with the last 2 digits being a code for something other than the date. Does anyone know for sure how to interpret these codes?

Thanks.

Jonathan

 

[Worsaer]

Check out this older thread, post #3 is Gary Rosenfield's reply:

https://www.rocketryforum.com/showthread.php?212

 

[JonSivier]

Check out this older thread, post #3 is Gary Rosenfield's reply:

https://www.rocketryforum.com/showthread.php?212

As far as I can tell that thread doesn't actually answer my question. One poster speculates that it might be the case that a number like 05121009 translates to 5/12/10 with the last 2 digits being a code for something like a batch number, but Gary's reply only refers to the 6 digit code the previous poster also asks about and doesn't address the 8 digit code. Can anyone confirm that the 8 digit code is indeed MMDDYY?? or DDMMYY?? or some other arrangement?

Thanks.

Jonathan

 

[pyrobob]

Here you go:

All reloads 29/38/54/75/98 are simply the date of propellant manufacture, for example 112416-01 = 11/24/16 - batch 01

Single use is different. For example, 100946 = 04/09/16, which is YMDDMY.

 

[JonSivier]

Here you go:

All reloads 29/38/54/75/98 are simply the date of propellant manufacture, for example 112416-01 = 11/24/16 - batch 01

Single use is different. For example, 100946 = 04/09/16, which is YMDDMY.

Thanks. That is very helpful.

Jonathan