{"schema_version":1,"airport":"MTN","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"faf795fa7925","priority":"ifr","category":"chart","kind":"changed","summary":"arrival WESTMINSTER SEVEN changed","source":"D-TPP","chart":{"code":"STR","name":"WESTMINSTER SEVEN","amdt":"","pdf":"https://aeronav.faa.gov/d-tpp/2609/00804WESTMINSTER.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"ae3ac86ba4fc","priority":"ifr","category":"chart","kind":"changed","summary":"approach LOC RWY 15 redrawn (still amdt 3D)","source":"D-TPP","chart":{"code":"IAP","name":"LOC RWY 15","amdt":"3D","pdf":"https://aeronav.faa.gov/d-tpp/2609/05222L15.PDF"}},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"a9ffe91a7007","priority":"fyi","category":"chart","kind":"changed","summary":"airport diagram changed","source":"D-TPP","chart":{"code":"APD","name":"AIRPORT DIAGRAM","amdt":"","pdf":"https://aeronav.faa.gov/d-tpp/2607/05222AD.PDF"}},{"cycle":"2026-05-14","from_cycle":"2026-04-16","id":"40ecfbf23b27","priority":"ifr","category":"procedure","kind":"changed","summary":"arrival/departure procedures new or updated: MIIDY4, RAVNN9","source":"STAR/DP","procedures":{"updated":["MIIDY4","RAVNN9"],"removed":[]}},{"cycle":"2026-01-22","from_cycle":"2025-12-25","id":"1b2979e68e7a","priority":"fyi","category":"remark","kind":"added","summary":"new remark: MILITARY: MISC: LTD RESOURCES AVBL FOR TRAN MIL ACFT.","source":"APT_RMK","original":"MILITARY: MISC: LTD RESOURCES AVBL FOR TRAN MIL ACFT."},{"cycle":"2025-12-25","from_cycle":"2025-11-27","id":"f673c6d1698c","priority":"fyi","category":"runway","kind":"changed","summary":"runway 15: controlling obstacle changed (now 86 ft tall, 2142 ft from threshold, 301 ft left of centerline, clearance slope 22:1)","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"116","new":"301"},{"field":"DIST_FROM_THR","old":"2223","new":"2142"},{"field":"OBSTN_CLNC_SLOPE","old":"24","new":"22"},{"field":"OBSTN_HGT","old":"84","new":"86"}]},{"cycle":"2025-12-25","from_cycle":"2025-11-27","id":"6029704a74df","priority":"fyi","category":"runway","kind":"changed","summary":"runway 33: controlling obstacle changed (now 64 ft tall, 3282 ft from threshold, 57 ft right of centerline, clearance slope 48:1)","source":"APT_RWY_END","fields":[{"field":"DIST_FROM_THR","old":"3285","new":"3282"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"e17ae2fff1c5","priority":"ifr","category":"navaid","kind":"removed","summary":"removed ILS/DME RWY 33 remark: DME ALSO SERVES RY 15.","source":"ILS_RMK","original":"DME ALSO SERVES RY 15."},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"06230421d670","priority":"action","category":"runway","kind":"changed","summary":"runway 15/33: length: 6997 -> 6999 ft; width: 180 -> 150 ft","source":"APT_RWY","fields":[{"field":"RWY_LEN","old":"6997","new":"6999"},{"field":"RWY_WIDTH","old":"180","new":"150"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"399da4971423","priority":"action","category":"navaid","kind":"changed","summary":"runway 15: back course: no restrictions -> none; ILS category: none -> I; ILS runway length: 6997 -> 6999 ft; ILS runway width: 180 -> 150 ft","source":"ILS_BASE","fields":[{"field":"BK_COURSE_STATUS_CODE","old":"N","new":""},{"field":"CATEGORY","old":"","new":"I"},{"field":"RWY_LEN","old":"6997","new":"6999"},{"field":"RWY_WIDTH","old":"180","new":"150"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"7d8a81b32f6e","priority":"action","category":"navaid","kind":"changed","summary":"runway 33: approach bearing: 326 -> 326.18° magnetic; back course: no restrictions -> none; ILS runway length: 6997 -> 6999 ft; ILS runway width: 180 -> 150 ft","source":"ILS_BASE","fields":[{"field":"APCH_BEAR","old":"326","new":"326.18"},{"field":"BK_COURSE_STATUS_CODE","old":"N","new":""},{"field":"RWY_LEN","old":"6997","new":"6999"},{"field":"RWY_WIDTH","old":"180","new":"150"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"ce2ba5e9b052","priority":"action","category":"navaid","kind":"changed","summary":"runway 33: marker: LOC -> none; remark subject: LAT_LONG_SOURCE_CODE -> GENERAL_REMARK; remark: 3RD PARTY SURVEY 21 APR, 2011. -> ILS UNMON WHEN ATCT CLSD.; remark table: ILS_COMPONENT -> ILS","source":"ILS_RMK","fields":[{"field":"ILS_COMP_TYPE_CODE","old":"LOC","new":""},{"field":"REF_COL_NAME","old":"LAT_LONG_SOURCE_CODE","new":"GENERAL_REMARK"},{"field":"REMARK","old":"3RD PARTY SURVEY 21 APR, 2011.","new":"ILS UNMON WHEN ATCT CLSD."},{"field":"TAB_NAME","old":"ILS_COMPONENT","new":"ILS"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"dc84f101c1ac","priority":"action","category":"navaid","kind":"changed","summary":"runway 33: remark: ILS UNMONITORED WHEN ATCT CLOSED. -> DME ALSO SERVES RWY 15.","source":"ILS_RMK","fields":[{"field":"REMARK","old":"ILS UNMONITORED WHEN ATCT CLOSED.","new":"DME ALSO SERVES RWY 15."}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"3ff3a52d2833","priority":"fyi","category":"frequency","kind":"changed","summary":"frequency 124.925 no longer listed for MTN AWOS-3PT","source":"FRQ","fields":[{"field":"FREQ_USE","old":"MTN AWOS-3PT","new":""}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"486a6003b257","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: UNUSBL BYD 5 DEGS EITHER SIDE OF CNTRLN.","source":"APT_RMK","original":"UNUSBL BYD 5 DEGS EITHER SIDE OF CNTRLN.","fields":[{"field":"REMARK","old":"UNUSBL BYD 5 DEGS EITHER SIDE OF CENTERLINE.","new":"UNUSBL BYD 5 DEGS EITHER SIDE OF CNTRLN."}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"6c36e77e55e8","priority":"fyi","category":"navaid","kind":"changed","summary":"runway 15: remark: DME ALSO SERVES RY 33. -> DME ALSO SERVES RWY 33.","source":"ILS_RMK","fields":[{"field":"REMARK","old":"DME ALSO SERVES RY 33.","new":"DME ALSO SERVES RWY 33."}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"a4a4d3e35f91","priority":"fyi","category":"navaid","kind":"changed","summary":"runway 15: remark: LOCALIZER OFFSET. -> LOC OFFSET.","source":"ILS_RMK","fields":[{"field":"REMARK","old":"LOCALIZER OFFSET.","new":"LOC OFFSET."}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"971c9523bf0e","priority":"fyi","category":"runway","kind":"changed","summary":"runway 15: runway end elevation: 21.3 -> 22.2 ft MSL; touchdown zone elevation: 21.5 -> 22.2 ft MSL","source":"APT_RWY_END","fields":[{"field":"RWY_END_ELEV","old":"21.3","new":"22.2"},{"field":"TDZ_ELEV","old":"21.5","new":"22.2"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"55a17dc1ee79","priority":"fyi","category":"runway","kind":"changed","summary":"runway 33: runway end elevation: 9.2 -> 9.6 ft MSL; touchdown zone elevation: 14.3 -> 15 ft MSL","source":"APT_RWY_END","fields":[{"field":"RWY_END_ELEV","old":"9.2","new":"9.6"},{"field":"TDZ_ELEV","old":"14.3","new":"15"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"61e8ad1a24ef","priority":"fyi","category":"runway","kind":"changed","summary":"runway H1: pavement now in fair condition","source":"APT_RWY","fields":[{"field":"COND","old":"","new":"FAIR"}]},{"cycle":"2025-04-17","from_cycle":"2025-03-20","id":"59ba3ed41f54","priority":"ifr","category":"procedure","kind":"changed","summary":"arrival/departure procedures new or updated: RAVNN8","source":"STAR/DP","procedures":{"updated":["RAVNN8"],"removed":[]}},{"cycle":"2025-03-20","from_cycle":"2025-02-20","id":"bd5646e52410","priority":"action","category":"remark","kind":"removed","summary":"remark removed: RMKS-ANG:  NO SPACE A, FLEET SVC, OR TRAN QTRS AVBL.  PPR AFTER DUTY HR RQR OG/CC APVL.","source":"APT_RMK","original":"RMKS-ANG:  NO SPACE A, FLEET SVC, OR TRAN QTRS AVBL.  PPR AFTER DUTY HR RQR OG/CC APVL."},{"cycle":"2025-03-20","from_cycle":"2025-02-20","id":"3ab153bab352","priority":"action","category":"remark","kind":"removed","summary":"remark removed: RMKS-ANG:  PPR FOR SVC AND USE OF ANG PRK RAMP ONLY, DSN 243-6630/6637/6444, C410-918-6630/6637/6444; AFTER DUTY HR CTC C410-698-8947.","source":"APT_RMK","original":"RMKS-ANG:  PPR FOR SVC AND USE OF ANG PRK RAMP ONLY, DSN 243-6630/6637/6444, C410-918-6630/6637/6444; AFTER DUTY HR CTC C410-698-8947."},{"cycle":"2025-03-20","from_cycle":"2025-02-20","id":"d87466bae3c3","priority":"action","category":"remark","kind":"changed","summary":"remark updated: MILITARY: ANG: CALL COMD POST/RAVEN OPS 275.500 OR 139.900 10 MIN PRIOR TO LNDG. NO SPACE A, FLEET SVC, OR TRAN QTRS AVBL. PPR AFTER DUTY HR RQR OG/CC APVL. C-5/C-17 ACFT RSTRD TO TWY A. PPR FOR SVC AND USE OF ANG PRK RAMP ONLY, DSN 243-6630/6637/6444, C410-918-6630/6637/6444; AFTER DUTY HR CTC C443-421-3128.","source":"APT_RMK","original":"MILITARY: ANG: CALL COMD POST/RAVEN OPS 275.500 OR 139.900 10 MIN PRIOR TO LNDG. NO SPACE A, FLEET SVC, OR TRAN QTRS AVBL. PPR AFTER DUTY HR RQR OG/CC APVL. C-5/C-17 ACFT RSTRD TO TWY A. PPR FOR SVC AND USE OF ANG PRK RAMP ONLY, DSN 243-6630/6637/6444, C410-918-6630/6637/6444; AFTER DUTY HR CTC C443-421-3128.","fields":[{"field":"REMARK","old":"RMKS-ANG:  CALL COMD POST/RAVEN OPS 275.500 OR 139.900 10 MIN PRIOR TO LNDG.","new":"MILITARY: ANG: CALL COMD POST/RAVEN OPS 275.500 OR 139.900 10 MIN PRIOR TO LNDG. NO SPACE A, FLEET SVC, OR TRAN QTRS AVBL. PPR AFTER DUTY HR RQR OG/CC APVL. C-5/C-17 ACFT RSTRD TO TWY A. PPR FOR SVC AND USE OF ANG PRK RAMP ONLY, DSN 243-6630/6637/6444, C410-918-6630/6637/6444; AFTER DUTY HR CTC C443-421-3128."}]},{"cycle":"2025-03-20","from_cycle":"2025-02-20","id":"81fec1efa510","priority":"fyi","category":"remark","kind":"removed","summary":"remark removed: RMKS-ANG:  C-5/C-17 ACFT RSTRD TO TWY A.","source":"APT_RMK","original":"RMKS-ANG:  C-5/C-17 ACFT RSTRD TO TWY A."},{"cycle":"2025-03-20","from_cycle":"2025-02-20","id":"69eb842f94c1","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: MILITARY: CAUTION: BASH II IN EFFECT AUG-JAN.","source":"APT_RMK","original":"MILITARY: CAUTION: BASH II IN EFFECT AUG-JAN.","fields":[{"field":"REMARK","old":"CAUTION: BASH II IN EFFECT AUG-JAN.","new":"MILITARY: CAUTION: BASH II IN EFFECT AUG-JAN."}]},{"cycle":"2025-02-20","from_cycle":"2025-01-23","id":"48cec1d179a9","priority":"ifr","category":"procedure","kind":"changed","summary":"arrival/departure procedures new or updated: LINSE","source":"STAR/DP","procedures":{"updated":["LINSE"],"removed":[]}},{"cycle":"2024-12-26","from_cycle":"2024-11-28","id":"103d7975449d","priority":"action","category":"airport","kind":"changed","summary":"airport attendance hours changed: 0600-2300 -> 0600-2100","source":"APT_ATT","fields":[{"field":"HOUR","old":"0600-2300","new":"0600-2100"}]},{"cycle":"2024-12-26","from_cycle":"2024-11-28","id":"6d3add8e5d8e","priority":"ifr","category":"procedure","kind":"changed","summary":"arrival/departure procedures new or updated: ANTHM5","source":"STAR/DP","procedures":{"updated":["ANTHM5"],"removed":[]}},{"cycle":"2024-12-26","from_cycle":"2024-11-28","id":"f8eaa579c6df","priority":"fyi","category":"runway","kind":"changed","summary":"runway 15/33: pavement now in excellent condition","source":"APT_RWY","fields":[{"field":"COND","old":"GOOD","new":"EXCELLENT"}]},{"cycle":"2024-12-26","from_cycle":"2024-11-28","id":"c7aaae4e717e","priority":"fyi","category":"runway","kind":"changed","summary":"runway 15: controlling obstacle changed (now 84 ft tall, 2223 ft from threshold, 116 ft left of centerline, clearance slope 24:1)","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"77","new":"116"},{"field":"DIST_FROM_THR","old":"2224","new":"2223"}]},{"cycle":"2024-12-26","from_cycle":"2024-11-28","id":"14e74497b068","priority":"fyi","category":"runway","kind":"changed","summary":"runway 33: controlling obstacle changed (now 64 ft tall, 3285 ft from threshold, 57 ft right of centerline, clearance slope 48:1); controlling obstacle: none -> TREES","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"","new":"R"},{"field":"CNTRLN_OFFSET","old":"","new":"57"},{"field":"DIST_FROM_THR","old":"","new":"3285"},{"field":"OBSTN_CLNC_SLOPE","old":"50","new":"48"},{"field":"OBSTN_HGT","old":"","new":"64"},{"field":"OBSTN_TYPE","old":"","new":"TREES"}]},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"341dc429017c","priority":"ifr","category":"procedure","kind":"changed","summary":"arrival/departure procedures new or updated: ANTHM4, CONLE, EMI7, FOXHL, LINSE, MIIDY3, RAVNN7, TERPZ, TRISH4","source":"STAR/DP","procedures":{"updated":["ANTHM4","CONLE","EMI7","FOXHL","LINSE","MIIDY3","RAVNN7","TERPZ","TRISH4"],"removed":[]}}],"first_cycle":"2024-09-05","last_cycle":"2026-09-03"}