{"schema_version":1,"airport":"SHL","entries":[{"cycle":"2026-10-01","from_cycle":"2026-09-03","engine":"1.3.8","id":"b8e0efb1af95","priority":"ifr","category":"chart","kind":"changed","summary":"approach RNAV (GPS) RWY 15 redrawn (still amdt 2)","source":"D-TPP","chart":{"code":"IAP","name":"RNAV (GPS) RWY 15","amdt":"2","pdf":"https://aeronav.faa.gov/d-tpp/2610/05712R15.PDF"}},{"cycle":"2026-10-01","from_cycle":"2026-09-03","engine":"1.3.8","id":"e24a61f7e258","priority":"ifr","category":"chart","kind":"changed","summary":"approach RNAV (GPS) RWY 33 amended (amdt 1G)","source":"D-TPP","chart":{"code":"IAP","name":"RNAV (GPS) RWY 33","amdt":"1G","pdf":"https://aeronav.faa.gov/d-tpp/2610/05712R33.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"21169cf4537a","priority":"action","category":"remark","kind":"removed","summary":"remark removed: COMMUNICATIONS PRVDD BY FORT DODGE RADIO ON FREQ 122.5 (SPENCER RCO).","source":"ATC_RMK","original":"COMMUNICATIONS PRVDD BY FORT DODGE RADIO ON FREQ 122.5 (SPENCER RCO)."},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"de7fcddfb263","priority":"fyi","category":"frequency","kind":"removed","summary":"flight service (FSS) 122.5 via the Spencer outlet no longer available","source":"FRQ"},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"6521cac3ee40","priority":"fyi","category":"runway","kind":"changed","summary":"runway 33: controlling obstacle changed (now 3 ft tall, 262 ft from threshold, 73 ft right of centerline, clearance slope 20:1); controlling obstacle: TREES -> TREE","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"400","new":"73"},{"field":"DIST_FROM_THR","old":"1490","new":"262"},{"field":"OBSTN_CLNC_SLOPE","old":"33","new":"20"},{"field":"OBSTN_HGT","old":"38","new":"3"},{"field":"OBSTN_TYPE","old":"TREES","new":"TREE"}]}],"first_cycle":"2026-09-03","last_cycle":"2026-10-01"}