BOAC;
it seems to me that the P authorities provided a perfectly safe, well-tried and used procedure to land on 12 from a 30 approach.
That was the CTL PANS-OPS procedure I believe?, (don't have the chart in front of me)
The questions remain however: Why 9nm north in poor vis? Why not climb to the sector altitude and turn left to the airport to re-establish? What made sense to them such that they continued what they were doing? Why didn't the EGPWS (TAWS) warn earlier, (or did it and they ignored it, or was it u/s and the TAWS turned was off or was there map-shift?) We don't yet know the answer to any of these questions. One hopes the P authorities will provide this information shortly.
PJ2