<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by clacko:
moondog... the london-singapore rte is mostly over land isn't it? did they fly subsonic? concordes used to come to dfw but had to go slow from the right coast.</font>
Everything I've read suggests they flew mostly at supersonic speeds, and not without lots of objections. In fact, IIRC the SIN service only lasted for three flights in 1977 before returning in 1979-80.