{"schema_version":1,"airport":"57MD","entries":[{"cycle":"2026-10-01","from_cycle":"2026-09-03","engine":"1.3.8","id":"402cfd3ebe00","priority":"action","category":"runway","kind":"changed","summary":"runway 18W/36W -> 16W/34W (new runway) (5370x2300 -> 11936x2000 ft)","source":"APT_RWY","fields":[{"field":"RWY_ID","old":"18W/36W","new":"16W/34W"}]},{"cycle":"2026-06-11","from_cycle":"2026-05-14","id":"c14e6c14207e","priority":"fyi","category":"airport","kind":"added","summary":"new airport added to FAA database: St Michaels, runway 18W/36W 5370x2300 ft water, CTAF 122.9","source":"APT_BASE"}],"first_cycle":"2026-06-11","last_cycle":"2026-10-01"}