Hey guys do you all still remember in good old days it was insisted that, In the tewrminal area descend to MSA and then to IAF altitude and always try and capture the G/S from below. This was one way to avoid the capture of false G/S. If the G/S is showing fly up, never descend below one's Initial app. altitude. Integrity of the G/S signal could be verified in time. Otherwise, by following the track dist. on finals versus height check and changing to G/S out minma, one could complete the approach.
Lahore elevation app. 750' was hazy as usual but what these guy in the SQ
B777 were doing with 3 radio altimeters indicating RA, 2 FMC telling them the dist. to go(this is subject to if no ILS/VOR DME present at OPLA on that day) before the EGPWS warning came. Its very difficult for any one to figure out why they kept descending below the G/S intercept alt. when tower seems to have conirmed to them that G/S was operating normal as per remot indications in TWR. I believe these guys ignored the "Pull Up" warning also for a considerable amout of time on so called final approach with no visual clues........... God bless another CFIT averted in time
. Just a sheer good luck for these guys and every one else on board.