Wrong.
I flew with many of 'em who had joined at age 24....and long before any A310's were on the property.
No 411A, not 'wrong' 100% right in fact. You left SIA long before the B744 came on the scene and the question relates to the B744 when the A310 was most definitely around and the joining age for a Singaporean was 26, (see post #12). What pertained when you were in SIA is irrelevant to this thread. RTFQ.