Effective Date: September 14, 2017
ORD — CHICAGO O'HARE VOR/DME
CHICAGO, IL

ORD - BASIC NAVAID DATA

CHICAGO O'HARE VOR/DME

CHICAGO, IL

Official Navaid Ident: ORD

Frequency: 113.90

GEOGRAPHICAL DATA

41-59-15.684N (151155.684N) / 087-54-17.347W (316457.347W)

Elevation: 649.3

Variation: 02E (1965)

NAVAID CLASS CODE(S)/EXTENDED DATA

Class: -VORW/DME 2

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: 09/14/2017

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 BYD 35 NM BLO 2500 FT, & 155-060 DEG BYD 35 NM BLO 2500 FT.

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 IMPORTANT SINCE NEARBY ACFT CAUSE MORE OVERLOAD THAN DISTANT ONES.