On the track to KJFK, but then I must have taken my eyes off the ball, as I was making the descent, despite selecting 250kts for the descent, the A/T all of a sudden switched off and it went haywire, but the main point being, this time the INS actually worked as per.

Now to try the next step, EGLL-LEMD, and see if I can crack that INS at last.

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