Can I ask some questions here please, just to clarify this in my own mind?
1. What type of INS did the DC10 have?
2. Did it have a triple-mix function?
3. How were the waypoints loaded? Individually as Lat/Longs by the crew or was it already pre-loaded by (say) the Nav Dept?
4. Was the CFP also changed on the day or was the infamous altered waypoint only changed? What I'm getting at here is would the crew have been able to pick up that there'd been a change by cross-checking the tracks/distances or even Lats/Longs?
Thanks.