What is the seat layout on American's 777-300ER?

Best economy: MCE row 25A or 25K — first MCE row, side 3-seat section, free for everyone
CRITICAL: Never choose center D, E, G, or H columns — 2 neighbors each on long-haul
Layout: 3-4-3 — always choose A/B/C (left 3) or J/K/L (right 3) sections
MCE is free: No status or credit card needed on this aircraft

Question

Accepted Answer

American's 777-300ER uses 3-4-3 economy seating — 3 seats on the left (A, B, C), 4 in the center (D, E, G, H), and 3 on the right (J, K, L). Never choose the center block on a 10+ hour flight — seats D, E, G, or H each have 2 neighbors. Main Cabin Extra rows 25–29 (35–37 in pitch) are free for all passengers. Always pick side sections: A or L for window, C or J for aisle.

Best Seats on American Airlines 777-300ER