holy shit you ain't joking. I didn't truly understand all the variables in properly filling out a 781 until I upgraded to AC, and it's obvious and apparent neither did the 1 Chucks. I've found some pretty glaring errors in my flight time up to the point I upgraded. NVG time vs night time (the former but not the latter getting logged on a give sortie), NVG time getting logged with Other time, etc. Glad I'm taking the time now to covert my crappy flight records and correct those errors, though it is tedious.