For me the areas where moderate turbulence seem always to be present is in the areas of Japan, as I fly over it (on the way to HKG
/SEL) or as we descend into NRT
. There was a time flying from SIN
on Singapore Airlines when we hit bad turbulence as we were just commecning our descent into NRT
. The plane just dropped catching people unaware. The seat belt sign went on in a flash as we started veering left right and center and dropping up and down. An FA
fell over as she was walking and into a lav. The poor FAs tried to get their pre landing procedures done as the plane became a roller coaster. The American captain later apologized sincerly both to his passengers and to his crew. Also, flying over the northern Pacific on the way to the US from Asia usually yields some turbulence as well.
The Bay of Bengal can also equate tons of turbulence, most harshly during the monsoon season. The worst I had encountered was with SQ
on their A310 on a Dhaka to SIN
run. The plane was bouncing all over the place from take off and the crew couldnt even start meal service until about two and a half hours into the flight.
These two areas consistently give turbulence, though the worst I have experienced was on a flight from BNE
to Port Moresby on Air Niugini. Bags falling all over the place, the crew going haywire in the forward galley...what an experience.