the 1st pic regarding the take-off route along runway 20 on
heading 200 is to prevent possible conflict with Changi airport's
civil aircraft traffic. If aircraft were to take off on heading
023, they will have to turn east and cross changi aerodrome and
cutting through the approach and departure glidepaths of civil
aircraft in changi before heading out to join the air routes.
military flights causes alot of problems for our civil aviation air
traffic control...
Noise abatement wise, well... i don't see how taking off towards
aljunied n kallang area can reduce noise disturbance to ppl living
there. taking off on runway 20 @ PLAB, it would head off to minimal
residential areas and thus, engine noise won't affect almost
anyone...