{"schema_version":1,"airport":"51M","entries":[{"cycle":"2025-11-27","from_cycle":"2025-10-30","id":"d61b0cf46bd6","priority":"action","category":"runway","kind":"changed","summary":"runway 10/28: length: 3000 -> 3001 ft","source":"APT_RWY","fields":[{"field":"RWY_LEN","old":"3000","new":"3001"}]},{"cycle":"2025-11-27","from_cycle":"2025-10-30","id":"07e839c961d3","priority":"fyi","category":"runway","kind":"changed","summary":"runway 10: runway end elevation: 1033 -> 1032.8 ft MSL; touchdown zone elevation: 1033 -> 1032.8 ft MSL","source":"APT_RWY_END","fields":[{"field":"RWY_END_ELEV","old":"1033","new":"1032.8"},{"field":"TDZ_ELEV","old":"1033","new":"1032.8"}]},{"cycle":"2025-11-27","from_cycle":"2025-10-30","id":"a8e725d06cb1","priority":"fyi","category":"runway","kind":"changed","summary":"runway 28: runway end elevation: 1032 -> 1031.8 ft MSL; touchdown zone elevation: 1033 -> 1032.8 ft MSL","source":"APT_RWY_END","fields":[{"field":"RWY_END_ELEV","old":"1032","new":"1031.8"},{"field":"TDZ_ELEV","old":"1033","new":"1032.8"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"933bfaaaf4bc","priority":"fyi","category":"airport","kind":"changed","summary":"airport phone number changed to 989-619-6484; airport contact address: 191 S MOUNT TOM RD -> 245 S MOUNT TOM RD; name changed: David E Kauffman -> Brian Smutek","source":"APT_CON","fields":[{"field":"ADDRESS1","old":"191 S MOUNT TOM RD","new":"245 S MOUNT TOM RD"},{"field":"NAME","old":"DAVID E KAUFFMAN","new":"BRIAN SMUTEK"},{"field":"PHONE_NO","old":"989-848-2446","new":"989-619-6484"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"c73a649946ac","priority":"fyi","category":"remark","kind":"added","summary":"new remark: UNATNDD OFC PH 989-826-6864.","source":"APT_RMK","original":"UNATNDD OFC PH 989-826-6864."},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"fc8ddb4f1c0f","priority":"fyi","category":"remark","kind":"removed","summary":"remark removed: 100LL AVBL H24 SELF SVC VIA CREDIT CARD.","source":"APT_RMK","original":"100LL AVBL H24 SELF SVC VIA CREDIT CARD."},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"38e88dd10b2e","priority":"fyi","category":"remark","kind":"removed","summary":"remark removed: CELL. UNATNDD OFC 989-826-6864.","source":"APT_RMK","original":"CELL. UNATNDD OFC 989-826-6864."},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"8d3c575a34b1","priority":"fyi","category":"runway","kind":"changed","summary":"runway 10: controlling obstacle changed (now 40 ft tall, 952 ft from threshold, 26 ft right of centerline, clearance slope 18:1)","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"B","new":"R"},{"field":"CNTRLN_OFFSET","old":"0","new":"26"},{"field":"DIST_FROM_THR","old":"1600","new":"952"},{"field":"OBSTN_HGT","old":"76","new":"40"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"438655df1bd7","priority":"fyi","category":"runway","kind":"changed","summary":"runway 28: controlling obstacle changed (now 10 ft tall, 308 ft from threshold, 137 ft right of centerline, clearance slope 10:1); controlling obstacle: none -> BRUSH","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"","new":"R"},{"field":"CNTRLN_OFFSET","old":"","new":"137"},{"field":"DIST_FROM_THR","old":"","new":"308"},{"field":"OBSTN_CLNC_SLOPE","old":"20","new":"10"},{"field":"OBSTN_HGT","old":"","new":"10"},{"field":"OBSTN_TYPE","old":"","new":"BRUSH"}]}],"first_cycle":"2025-10-30","last_cycle":"2025-11-27"}