AC 3 Tier (3A) coach seat layout
Air-conditioned 3-tier. Same berth pattern as Sleeper, with bedding. The coach holds 72 berths, arranged as 8 berths per bay (6 main + 2 side) x 9 bays.
Which seat numbers are which in AC 3 Tier
8 berths per bay (6 main + 2 side) x 9 bays. The pattern repeats along the coach, so the same position in every bay carries the same berth type.
Lower berth (LB) — 18 of them
1, 4, 9, 12, 17, 20, 25, 28, 33, 36, 41, 44, 49, 52, 57, 60, 65, 68
Middle berth (MB) — 18 of them
2, 5, 10, 13, 18, 21, 26, 29, 34, 37, 42, 45, 50, 53, 58, 61, 66, 69
Upper berth (UB) — 18 of them
3, 6, 11, 14, 19, 22, 27, 30, 35, 38, 43, 46, 51, 54, 59, 62, 67, 70
Side lower (SL) — 9 of them
7, 15, 23, 31, 39, 47, 55, 63, 71
Side upper (SU) — 9 of them
8, 16, 24, 32, 40, 48, 56, 64, 72
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