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HELENA, MT HELENA VORTAC HELENA, MT Official Navaid Ident: HLN Frequency: 117.70 GEOGRAPHICAL DATA 46-36-24.555N (167784.555N) / 111-57-12.511W (403032.511W) Elevation: 3823 Variation: 16E (1990) NAVAID CLASS CODE(S)/EXTENDED DATA Class: H-VORTACW Altitude Code: H (high) TACAN Channel: 124X Radio Voice Call: NONE Hours of Operation: 24 Associated ARTCC: SALT LAKE CITY Voice: NO Voice Ident: NO Monitoring Category: Internal monitoring plus a status indicator installed at control point. (Reverts to a temporary category 3 status when the control point is not manned.) Pitch Point: N Catch Point: N ADMINISTRATIVE INFORMATION Effective Date: 09/25/2008 Responsible FAA Region: ANM Country: U.S.A. Owner Name: FEDERAL AVIATION ADMIN Operator Name: FEDERAL AVIATION ADMIN Common System Usage: Y Public Use: Y Controlling FSS: GTF - (GREAT FALLS) Controlling FSS Hours: 24 Notam Code: HLN NAVAID REMARKS VOR PORTION UNUSBL 035-050 BYD 25 NM BLO 12000 FT; 105-165 BYD 25 NM BLO 17000 FT; 165-185 BYD 25 NM BLO 13500 FT; 185-230 BYD 25 NM BLO 17500 FT; 230-270 BYD 25 NM BLO 12500 FT. TACAN AZIMUTH & DME UNUSBL 320-070 BYD 25 NM BLO 13000 FT; 105-150 BYD 15 NM ALL ALTS; 150-165 BYD 15 NM BLO 17000 FT; 165-185 BYD 25 NM BLO 13500 FT; 185-210 FT BYD 15 NM ALL ALTS; 210-250 BYD 15 NM BLO 17500 FT; 250-300 BYD 25 NM BLO 14000 FT. |