All classes of service are affected.
Generally, whenever an airline changes some policy or another, it’s to charge more or provide less — or both. Thai Airways is doing the opposite by increasing allowances for free checked baggage. Royal First Class passengers may now check-in 50 kilograms, up from 40 kilograms previously. Royal Silk Class passengers (business class) are now allowed 40 kilograms, up from 30 kilograms. Even Economy Class get a break with 30 kilograms of free checked baggage, up from 20 kilograms previously. Royal Orchid Plus members are also entitled additional baggage allowance based on their respective member status. A kilogram equals is 2.2 pounds. You do the math.