Parrot were going to mail me how to determine the manufacturing date from the 18 digit serial number / letter code. They didn’t, I thought I could work it out myself but it is not that straight forward .
I will be talking with them today, if I remember I will ask again.
Reason was they were trying to convince me that the the reason for my Skycontroller2 failure was it was and old stock model circa 2010/11......the serial code would prove that.......( the fact it had new fpv glasses, 3300 battery and a blue LED light in the drone put pay to that theory)