I think I mentioned here that when I drove her back after her first bit of leave she couldn’t remember the combination to the push button combination lock on the back door. Something made me have a go and bizarrely I got it right first time. It hadn’t changed since I was there forty years ago!
I think quite a few of us could guess what it is/was - I found a common combination to the messes on several flying stations. A number all aircrew couldn't forget.