Dear experts coach HA1 in 12479 is fully Ac First class or Two Tier cum 1AC coach like in few trains. my purpose is to book 24 2AC seats on arb for 19.05.15 & wish to travel in one coach altogether which wont be poss in 3AC as there are Four 3AC coaches and impossible to get all seats in same coach also 3AC is in good demand it hardly works on ARP where as 2AC booking as i have observed till now starts mostly after 3AC gets booked. so meanwhile i can make it with 24 2AC seats hopefully.