{"schema_version":1,"airport":"GCN","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"fc4e8b728270","priority":"action","category":"remark","kind":"removed","summary":"remark removed: COMMUNICATIONS PRVDD BY PRESCOTT RADIO ON FREQ 122.4 (GRAND CANYON RCO) WHEN ATCT IS CLSD.","source":"ATC_RMK","original":"COMMUNICATIONS PRVDD BY PRESCOTT RADIO ON FREQ 122.4 (GRAND CANYON RCO) WHEN ATCT IS CLSD."},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"56144dec2f63","priority":"fyi","category":"frequency","kind":"removed","summary":"flight service (FSS) 122.4 via the Grand Canyon outlet no longer available","source":"FRQ"},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"be17e7985d03","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: FOR CD WHEN ATCT CLSD IF UNA TO CTC ON FSS FREQ, CTC LOS ANGELES ARTCC AT 661-575-2079.","source":"APT_RMK","original":"FOR CD WHEN ATCT CLSD IF UNA TO CTC ON FSS FREQ, CTC LOS ANGELES ARTCC AT 661-575-2079.","fields":[{"field":"REMARK","old":"FOR CD IF UNA TO CTC ON FSS FREQ, CTC LOS ANGELES ARTCC AT 661-575-2079.","new":"FOR CD WHEN ATCT CLSD IF UNA TO CTC ON FSS FREQ, CTC LOS ANGELES ARTCC AT 661-575-2079."}]},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"d5fbf3a2edb7","priority":"fyi","category":"airport","kind":"changed","summary":"airport phone number changed to 480-261-9559","source":"APT_CON","fields":[{"field":"PHONE_NO","old":"623-695-8656","new":"480-261-9559"}]},{"cycle":"2026-04-16","from_cycle":"2026-03-19","id":"2bdc63bac9cb","priority":"action","category":"remark","kind":"added","summary":"new remark: SAID in use; operate transponders with altitude reporting mode and ADS-B (if equipped) enabled on all airport surfaces.","source":"ATC_RMK","original":"SAID IN USE. OPERATE TRANSPONDERS WITH ALTITUDE REPORTING MODE AND ADS-B (IF EQUIPPED) ENABLED ON ALL AIRPORT SURFACES."},{"cycle":"2026-04-16","from_cycle":"2026-03-19","id":"510e8e8f22b6","priority":"fyi","category":"frequency","kind":"changed","summary":"frequency 124.3 no longer listed for GCN ASOS","source":"FRQ","fields":[{"field":"FREQ_USE","old":"GCN ASOS","new":""}]},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"839ddd896996","priority":"fyi","category":"airport","kind":"changed","summary":"airport phone number changed to 623-695-8656; name changed: Warren Smith -> David Reffner","source":"APT_CON","fields":[{"field":"NAME","old":"WARREN SMITH","new":"DAVID REFFNER"},{"field":"PHONE_NO","old":"928-638-2446","new":"623-695-8656"}]},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"4aabdcfb780b","priority":"fyi","category":"runway","kind":"changed","summary":"runway 03/21: pavement now in fair condition","source":"APT_RWY","fields":[{"field":"COND","old":"GOOD","new":"FAIR"}]},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"159f389e33c6","priority":"fyi","category":"airport","kind":"changed","summary":"services: added parachute jump activity (PAJA)","source":"APT_BASE","fields":[{"field":"OTHER_SERVICES","old":"AFRT,AVNCS,CHTR","new":"AFRT,AVNCS,CHTR,PAJA"}]}],"first_cycle":"2024-11-28","last_cycle":"2026-09-03"}