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CHICAGO, IL CHICAGO O'HARE VOR/DME CHICAGO, IL Official Navaid Ident: ORD Frequency: 113.90 GEOGRAPHICAL DATA 41-59-15.624N (151155.624N) / 087-54-17.590W (316457.590W) Elevation: 650 Variation: 02E (1965) NAVAID CLASS CODE(S)/EXTENDED DATA Class: L-VORW/DME Altitude Code: L (low) TACAN Channel: 086X Radio Voice Call: NONE Hours of Operation: 24 Associated ARTCC: CHICAGO 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: 07/31/2008 Responsible FAA Region: AGL Country: U.S.A. Owner Name: FEDERAL AVIATION ADMIN Operator Name: FEDERAL AVIATION ADMIN Common System Usage: Y Public Use: Y Controlling FSS: IKK - (KANKAKEE) Controlling FSS Hours: 24 Notam Code: ORD NAVAID REMARKS HIWAS BROADCAST. VOR PORTION UNUSBL 140-155 DEG BYD 15 NM; 100-140 DEG & 155-060 DEG BYD 35 NM BLO 2500 FT. TACAN AZIMUTH UNUSBL 020-040; 065-200; 270-315; 340-350. DME UNLOCKS CAN OCCUR PERIODICALLY DUE TO GROUND STATION OVERLOAD WHEN MORE THAN 100 ACFT INTERROGATIONS ARE RECEIVED AT THE SAME TIME. THE PROBLEM MAY OCCUR WHEN ACFT ARE BEING HELD IN THE CHICAGO-O'HARE TERMINAL AREA AWAITING APCH CLNC AT O'HARE. POSSIBILITIES OF THE PROBLEM OCCURRING ARE REDUCED BY USERS DEACTIVATING INTERROGATORS DURING NONUSE OR SWITCHING TO AN ILS DME WHENEVER POSSIBLE. DEACTIVATING INTERROGATORS ON THE GROUND IS ESPECIALLY INPORTANT SINCE NEARBY ACFT CAUSE MORE OVERLOAD THAN DISTANT ONES. |