Delta064

My INS1 STS has just dropped to 90 in flight. POS is frozen and I've lost all other functions (e.g. TK/GS, DIS/TIME), Tx CHG no lomnger works however, the autopilot does still seem to be following the route correctly. INS3 (FO's?) is still working fine but it's my understand the AP only works from INS1 (CAPT's). I've just loaded in the 2nd batch of WPTs 1-9 so I'll see if it continues to guide correctly... Correction - INS mode on the AP had dropped out. Tried reengaging at its returning the A/C to the frozen leg, so I can no longer use INS for navigation, less than a quarter of the way into a transatlantic crossing... I appreciate simulating non-normals, but you usually get to choose! 😉