{"schema_version":1,"airport":"16SD","entries":[{"cycle":"2026-03-19","from_cycle":"2026-02-19","id":"734689234819","priority":"fyi","category":"airport","kind":"changed","summary":"airport contact address: 917 N WASHINGTON AVENUE -> 323 10TH ST SW; airport contact address line 2: none -> SUITE 1","source":"APT_CON","fields":[{"field":"ADDRESS1","old":"917 N WASHINGTON AVENUE","new":"323 10TH ST SW"},{"field":"ADDRESS2","old":"","new":"SUITE 1"}]},{"cycle":"2026-03-19","from_cycle":"2026-02-19","id":"6b0ff60ab43c","priority":"fyi","category":"airport","kind":"changed","summary":"airport contact address: 917 NORTH WASHINGTON AVENUE -> 323 10TH ST SW; name changed: Madison Community Hospital -> Madison Regional Health System","source":"APT_CON","fields":[{"field":"ADDRESS1","old":"917 NORTH WASHINGTON AVENUE","new":"323 10TH ST SW"},{"field":"ADDRESS2","old":"","new":"SUITE 1"},{"field":"NAME","old":"MADISON COMMUNITY HOSPITAL","new":"MADISON REGIONAL HEALTH SYSTEM"}]},{"cycle":"2025-06-12","from_cycle":"2025-05-15","id":"34417c31d274","priority":"fyi","category":"runway","kind":"changed","summary":"runway H1: runway end elevation: none -> 1683 ft MSL; touchdown zone elevation: none -> 1683 ft MSL","source":"APT_RWY_END","fields":[{"field":"RWY_END_ELEV","old":"","new":"1683"},{"field":"TDZ_ELEV","old":"","new":"1683"}]}],"first_cycle":"2025-06-12","last_cycle":"2026-03-19"}