"The Philippines has begun long-delayed repairs to its crumbling runway at Thitu, or Pag-asa, Island, the largest of its nine outposts in the Spratly Islands and home to upwards of 100 civilians and a small military garrison. Thitu sits just over 12 nautical miles from China’s air and naval base at Subi Reef, and was the site of a tense standoff with a Chinese flotilla last August. Philippine defense officials in April 2017 announced that they would be upgrading facilities at the country’s occupied islands and reefs, but little work was apparent until now."
https://amti.csis.org/philippines-launches-spratly-repairs/