Construction of the 3,500-meter Runway C and extension of the 2,500-meter Runway B by 1,000 meters commenced at Narita airport in Chiba Prefecture after state approval was granted in January 2020, according to the airport operator. Once the work is completed, the airport will roughly double in size to 2,297 hectares, and its annual arrival and departure slots are expected to expand to 500,000 from 340,000 currently. In late March, local groups supportive of the expansion submitted a proposal calling for the company to consider expropriation.