Takeoff : 18-Sep-17 0855 Z
Aircraft : 5305
ARWO : KC
Flight hours : 10.00
Mission ID : 0215A MARIA
Comments : Curacao
16 to 23 Sept
Equipment : Harddrive sometimes absolutely would not work, PC wouldn't read it. Multiple reboots attempted. Often worked at first, but would stop working and not work again.

Both C and F were way off - about 10-30m all day.  The Nav mentioned that INS 1 
was having some trouble so that could be it.  I had to adjust the GAF table 
multiple times.