{"schema_version":1,"airport":"ALS","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"36c7d01125a7","priority":"ifr","category":"chart","kind":"changed","summary":"approach ILS OR LOC RWY 02 redrawn (still amdt 3)","source":"D-TPP","chart":{"code":"IAP","name":"ILS OR LOC RWY 02","amdt":"3","pdf":"https://aeronav.faa.gov/d-tpp/2609/00018IL2.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"04ee22b05b7d","priority":"fyi","category":"frequency","kind":"removed","summary":"flight service (FSS) 122.3 via the Alamosa outlet no longer available","source":"FRQ"},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"58728e61a411","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: FOR CD CTC DENVER ARTCC ON FREQ. IF UNA, CTC DENVER ARTCC AT 303-651-4257.","source":"APT_RMK","original":"FOR CD CTC DENVER ARTCC ON FREQ. IF UNA, CTC DENVER ARTCC AT 303-651-4257.","fields":[{"field":"REMARK","old":"FOR CD CTC DENVER ARTCC ON FREQ. IF UNA, CTC FSS ON FREQ VIA RCO. IF UNA, CTC DENVER ARTCC AT 303-651-4257.","new":"FOR CD CTC DENVER ARTCC ON FREQ. IF UNA, CTC DENVER ARTCC AT 303-651-4257."}]},{"cycle":"2026-05-14","from_cycle":"2026-04-16","id":"7d76b8834a4a","priority":"action","category":"weather","kind":"changed","summary":"AWOS/ASOS phone number changed to 719-223-0010","source":"AWOS","fields":[{"field":"PHONE_NO","old":"719-589-5669","new":"719-223-0010"}]},{"cycle":"2026-01-22","from_cycle":"2025-12-25","id":"93be45cb72a7","priority":"fyi","category":"navaid","kind":"changed","summary":"ALS navaid: remark: TAC AZM UNUSBL 025-045 BYD 25 NM BLW 15900 FT; 150-180 BYD 35 NM BLW 11600 FT. -> TAC AZM UNUSBL 025-045 BYD 25 NM BLW 15900 FT; 150-180 BYD 35 NM BLW 11600 FT; 300-335 BYD 28 NM BLW 10850 FT; 300-335 BYD 36 NM BLW 11500 FT.","source":"NAV_RMK","fields":[{"field":"REMARK","old":"TAC AZM UNUSBL 025-045 BYD 25 NM BLW 15900 FT; 150-180 BYD 35 NM BLW 11600 FT.","new":"TAC AZM UNUSBL 025-045 BYD 25 NM BLW 15900 FT; 150-180 BYD 35 NM BLW 11600 FT; 300-335 BYD 28 NM BLW 10850 FT; 300-335 BYD 36 NM BLW 11500 FT."}]},{"cycle":"2025-12-25","from_cycle":"2025-11-27","id":"6df6ffca889c","priority":"fyi","category":"airport","kind":"changed","summary":"airport phone number changed to 719-587-5211","source":"APT_CON","fields":[{"field":"PHONE_NO","old":"(719) 587-5211","new":"719-587-5211"}]},{"cycle":"2025-12-25","from_cycle":"2025-11-27","id":"8f42df2b3824","priority":"fyi","category":"airport","kind":"changed","summary":"name changed: Will Hickman -> Sirah Masters","source":"APT_CON","fields":[{"field":"NAME","old":"WILL HICKMAN","new":"SIRAH MASTERS"},{"field":"PHONE_NO","old":"(719) 580-1986","new":"719-587-5211"}]},{"cycle":"2025-05-15","from_cycle":"2025-04-17","id":"b78d36fe2bcc","priority":"fyi","category":"airport","kind":"changed","summary":"cold temperature airport (altitude correction at or below): -26C -> -25C","source":"APT_BASE","fields":[{"field":"CTA","old":"-26C","new":"-25C"}]},{"cycle":"2025-05-15","from_cycle":"2025-04-17","id":"26079356d2c2","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: COLD TEMPERATURE AIRPORT. ALTITUDE CORRECTION REQUIRED AT OR BELOW -25C.","source":"APT_RMK","original":"COLD TEMPERATURE AIRPORT. ALTITUDE CORRECTION REQUIRED AT OR BELOW -25C.","fields":[{"field":"REMARK","old":"COLD TEMPERATURE AIRPORT. ALTITUDE CORRECTION REQUIRED AT OR BELOW -26C.","new":"COLD TEMPERATURE AIRPORT. ALTITUDE CORRECTION REQUIRED AT OR BELOW -25C."}]},{"cycle":"2025-03-20","from_cycle":"2025-02-20","id":"0d71280ab09f","priority":"action","category":"remark","kind":"added","summary":"new remark: APRON GA RAMP CLSD TO ACRS.","source":"APT_RMK","original":"APRON GA RAMP CLSD TO ACRS."}],"first_cycle":"2025-03-20","last_cycle":"2026-09-03"}