David Chandler and I have now published an Addendum to our paper "The Pentagon Attack on 9/11:
A Refutation of the Pentagon Flyover Hypothesis Based on Analysis of the Flight Path"
http://stj911.org/legge/Legge_Chandler_NOC_Refutation.html

The Addendum draws on two additional pieces of evidence to revise the calculations of bank angle and wing loading which would be required if the plane followed the curved path north of the Citgo service station. This strengthens the previous conclusions set out in the original paper. Previously the failure of the many witnesses to mention a steep bank was taken as proof that the curved path did not happen, while the survival of the aircraft, if it deviated round the service station, was regarded as unlikely. With this new analysis of the witness testimony, showing the plane was flying wings level near the Naval Annex, survival of the plane is now found to be absolutely impossible. There is thus no rational explanation of the event other than that the plane flew virtually straight past the Naval Annex and the service station to the impact point.