The coordinates for the last position received are 3 NM abeam the Airway UN873.
There is absolutely no justification for the Interim Report not to explicitly mention that information.
To limit the analysis to the following comment is not satisfactory :
Originally Posted by english copy p. 68
up to the last automatic position point, received at 2 h 10 min 35 s, the flight had followed the route indicated in the flight plan