SIN-AMS (No F class)??

[jupiter]

SIN-AMS is flowed by a 777-300ER, but why is there no F when I booked via SQ website?

Planning to book a trip later this year, but all dates unavailable for F

Anyone knows any reason for it?

Thanks in advance

[9V-JKL]

http://www.sqtalk.com/forum/showthread.php?t=12470

Same thread title too...