| Navaid Facility ID: | DDY |
| Official Navaid Facility ID: | DDY |
| Navaid Facility Type: | VOR-DME |
| Navaid Name: | Muddy Mountain |
| City: | CASPER |
| State: | WYOMING |
| FAA Region: | |
| Latitude: | 43-05-27.083N (43.0909) |
| Longitude: | 106-16-37.288W (-106.277) |
| Lat/Long Survey Accuracy: | NOS |
| Owner: | FEDERAL AVIATION ADMIN |
| Operator: | FEDERAL AVIATION ADMIN |
| Common System Usage: | Yes |
| Public Use: | Yes |
| Navaid Class: | H-VORW/DME |
| Hours of Operation: | 24 |
| Magnetic Variance: | 8.6 E as of 9/30/2025 |
| ARTCC High Altitude ID (Name): | ZDV (DENVER) |
| ARTCC Low Altitude ID (Name): | ZDV (DENVER) |
| Navaid ID | Navaid Facility Type | Remarks |
|---|---|---|
| DDY | VOR-DME | VOR UNUSBL 132-142 BYD 40 NM BLW 18000 FT; 143-153 BYD 40 NM; 154-164 BYD 40 NM BLW 10800 FT; 154-164 BYD 81 NM; 165-180 BYD 40 NM. |
| Navaid ID | Navaid Facility Type | Magnetic Variance | Airspace Fixes |
|---|---|---|---|
| DDY | VOR-DME | 8.7 E | AFYAB WY - K1 ALCOS WY - K1 CESPI WY - K1 CHOMP WY - K1 DEALT WY - K1 EVENT WY - K1 GIPEC WY - K1 GLEES WY - K1 HATNO WY - K1 HEITY WY - K1 HIKOX WY - K1 ISOYA WY - K1 JATEB WY - K1 JUMKO WY - K1 KNOXS WY - K1 MAMUE WY - K1 MULTI WY - K1 OILLY WY - K1 OPNEE WY - K1 SALON WY - K1 SPIDE WY - K1 |
| DDY | VOR-DME | 8.7 E | WAPAP WY - K1 ZEGAN WY - K1 |
| Navaid ID | Navaid Facility Type | Holding Patterns |
|---|---|---|
| DDY | VOR-DME | ALCOS INT*WY*K1, Pattern #: 1 CESPI INT*WY*K1, Pattern #: 1 DEALT INT*WY*K1, Pattern #: 1 MUDDY MOUNTAIN VOR/DME*WY, Pattern #: 1 MUDDY MOUNTAIN VOR/DME*WY, Pattern #: 2 |
| Navaid ID: | DDY |
| Navaid Facility Type: | |
| Air or Ground: | Air |
| Bearing of Checkpoint: | 204 |
| Altitude: | 6400 |
| Airport ID: | CPR |
| State: | WY |
| Description: | 13.4 NM OVR INTERSECTION RYS 03/21 & 08/26. |