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Pilot reported insufficient navigational signal coverage at the changeover point on V23; between eug and btg vortacs; while at the MEA of 5;000 feet.
| Attributes | |
| ACN | 1542736 |
| Time | |
| Date | 201805 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZSE.ARTCC |
| State Reference | WA |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Small Aircraft |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Cruise |
| Route In Use | Airway V23 |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying Single Pilot |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Published Material / Policy |
Narrative:
Consistently while flying down V23 at 5;000 feet (MEA) between btg and eug VOR's there is no navigation signal received from the eug VORTAC at the charted VOR change over point (44 nm from btg/57 nm from eug). The DME and identify features are present; however no navigation signal. Navigation signal is received 3-10 nm south of the changeover point (generally around 7 nm south depending on weather conditions). Observed navigation flags on both navigation instruments once I changed from btg (116.60) to eug (112.90) at the charted change over point. There is insufficient signal coverage from eug VORTAC at the MEA at the charted change over point. I double-checked frequencies; checked the identify feature (which was present); reverted to btg VOR frequency and cross-referenced my position with GPS to navigate the airway. Contacted ATC and reported the issue; providing details about the signal coverage from both the eug and btg vors (when signal was received from eug; and lost from btg). Recommend a flight check to fly the airway at the MEA to verify this issue. Also; recommend a change to the position of the changeover point on the IFR low altitude chart to 51 nm from btg/50 nm from eug.
Original NASA ASRS Text
Title: Pilot reported insufficient navigational signal coverage at the changeover point on V23; between EUG and BTG VORTACs; while at the MEA of 5;000 feet.
Narrative: Consistently while flying down V23 at 5;000 feet (MEA) between BTG and EUG VOR's there is no navigation signal received from the EUG VORTAC at the charted VOR change over point (44 nm from BTG/57 nm from EUG). The DME and IDENT features are present; however no navigation signal. Navigation signal is received 3-10 nm south of the changeover point (generally around 7 nm south depending on Weather conditions). Observed NAV flags on both navigation instruments once I changed from BTG (116.60) to EUG (112.90) at the charted change over point. There is insufficient signal coverage from EUG VORTAC at the MEA at the charted change over point. I double-checked frequencies; checked the IDENT feature (which was present); reverted to BTG VOR frequency and cross-referenced my position with GPS to navigate the airway. Contacted ATC and reported the issue; providing details about the signal coverage from both the EUG and BTG VORs (when signal was received from EUG; and lost from BTG). Recommend a flight check to fly the airway at the MEA to verify this issue. Also; recommend a change to the position of the changeover point on the IFR low altitude chart to 51 nm from BTG/50 nm from EUG.
Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.