Effective 10th Sept S79 received fleet addition of 1 split
shift. the bus is 252R. 3738L is probably to replace 1784R.
Duty codes got S79 weekday as follows: 1A-2A, 3P-4P, 5S-7S,
81A-82A, 83P-84P
So, there's only 7 perm buses 
My apologies.. 817L, not 800J
i know there are 2 JB Mk3s perm on 16. kinda slipped off
my mind about the 2nd one cos i seldom see it.