{"schema_version":1,"from_cycle":"2026-10-01","to_cycle":"2026-10-29","airport":"9N7","counts":{"action":1,"ifr":0,"fyi":3},"changes":[{"id":"210b08f58219","priority":"action","category":"navaid","kind":"removed","summary":"BZJ NDB (328) (5 NM from the field): decommissioned","source":"NAV_BASE","fields":[{"field":"NAV_ID","old":"BZJ","new":""},{"field":"NAV_TYPE","old":"NDB","new":""},{"field":"NAV_STATUS","old":"OPERATIONAL IFR","new":""},{"field":"NAME","old":"BELLGROVE","new":""},{"field":"STATE_NAME","old":"PENNSYLVANIA","new":""},{"field":"REGION_CODE","old":"AEA","new":""},{"field":"COUNTRY_NAME","old":"UNITED STATES","new":""},{"field":"OWNER","old":"R-US ARMY","new":""},{"field":"OPERATOR","old":"R-US ARMY","new":""},{"field":"NAS_USE_FLAG","old":"Y","new":""},{"field":"PUBLIC_USE_FLAG","old":"Y","new":""},{"field":"NDB_CLASS_CODE","old":"MHW","new":""},{"field":"OPER_HOURS","old":"24","new":""},{"field":"HIGH_ALT_ARTCC_ID","old":"ZNY","new":""},{"field":"HIGH_ARTCC_NAME","old":"NEW YORK","new":""},{"field":"LOW_ALT_ARTCC_ID","old":"ZNY","new":""},{"field":"LOW_ARTCC_NAME","old":"NEW YORK","new":""},{"field":"SURVEY_ACCURACY_CODE","old":"5","new":""},{"field":"SIMUL_VOICE_FLAG","old":"Y","new":""},{"field":"AUTO_VOICE_ID_FLAG","old":"N","new":""},{"field":"MNT_CAT_CODE","old":"1","new":""},{"field":"VOICE_CALL","old":"NONE","new":""},{"field":"FREQ","old":"328","new":""},{"field":"Z_MKR_FLAG","old":"N","new":""},{"field":"FSS_ID","old":"IPT","new":""},{"field":"FSS_NAME","old":"WILLIAMSPORT","new":""},{"field":"FSS_HOURS","old":"24","new":""},{"field":"NOTAM_ID","old":"IPT","new":""},{"field":"PITCH_FLAG","old":"N","new":""},{"field":"CATCH_FLAG","old":"N","new":""},{"field":"SUA_ATCAA_FLAG","old":"N","new":""}]},{"id":"714b0b06f9a0","priority":"fyi","category":"remark","kind":"changed","summary":"revised remark: Runway 28 approach ratio 20:1 to displaced runway threshold.","source":"APT_RMK","original":"RWY 28 APCH RATIO 20:1 TO DTHR.","fields":[{"field":"REMARK","old":"RWY 28 APCH RATIO 21:1 TO DTHR.","new":"RWY 28 APCH RATIO 20:1 TO DTHR."}]},{"id":"7fae5a8b8766","priority":"fyi","category":"runway","kind":"changed","summary":"runway 10: controlling obstacle: TREE 37 ft tall, 236 ft from threshold, 130 ft left of centerline -> TREE 38 ft tall, 236 ft from threshold, 130 ft left of centerline","source":"APT_RWY_END","fields":[{"field":"OBSTN_HGT","old":"37","new":"38"}]},{"id":"0feae92b995e","priority":"fyi","category":"runway","kind":"changed","summary":"runway 28: controlling obstacle: TREE 30 ft tall, 57 ft from threshold, 122 ft left of centerline -> TREE 31 ft tall, 57 ft from threshold, 122 ft left of centerline","source":"APT_RWY_END","fields":[{"field":"OBSTN_HGT","old":"30","new":"31"}]}]}