If I remember correctly, the POS
terminal can be expanded. I think that it can be added to the North of the present terminal with link taxiways between the two terminals added to the East. A second runway, if needed, can be accommodated further North, close to the Churchill Roosevelt Highway.
The old terminal is still used for some helicopter flights and the aprons there are used for cargo flights - though on landing the cargo planes actually hook up to the jetways at the new terminal for immigration clearance before being towed across the runway to be off-loaded.
As I remember last using POS
back in 2005, it seemed in pretty good shape although I hope that they maintain it. The expansion as was undertaken in 1999-2000 is adequate - if traffic rises further then they should expand it more. I do not think that a bigger expansion would have been appropriate - what one could have ended up with is a huge airport with too few flights to fully utilize it and thus make it a maintenance burden. Somehow, when I think of under-used airports, KUL
comes to mind (I went there in 2003). All the same, I accept the criticisms that have been levied at the facility's present design. More provision should have been made for the turboprops - they are after all a significant part of POS
's operations. The LI
and 8B flights that call at TAB
on their way on to BGI
, GND etc are also tricky. Domestic passengers filter to the domestic terminal after check-in while the international passengers go through immigration in the main terminal - though usually the planes doing these flights are parked adjacent to the domestic terminal.
does need a new terminal - the present one is over 20 years old and the traffic growth has exceeded the facility's capacity. The problem lies in where to build it. The most likely solution is to build it further to the East of the old one and further from the runway to comply with ICAO standards for obstacle-free zones around the runway. Jetways here seem very unlikely.
I would like to see how BGI
's expansion pans out - it certainly needs it!