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A frequency change error resulted in an aircraft entering an area of higher terrain below the MVA.
| Attributes | |
| ACN | 918194 |
| Time | |
| Date | 201011 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | PVU.Airport |
| State Reference | UT |
| Aircraft 1 | |
| Make Model Name | Citation V/Ultra/Encore (C560) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Initial Approach |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | Approach |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | ATC Issue All Types Inflight Event / Encounter CFTT / CFIT |
Narrative:
The C560 was inbound from the south for an ILS to pvu. The altitude and heading would put the pilot into lower terrain within 15 miles. I planned on turning the aircraft well before the higher terrain. I issued a frequency change to the remote frequency; 118.85. The pilot read back 118.15. I corrected the pilot but he did not respond. I kept calling on the original frequency; I called on 121.5; and I called provo tower to see if they had called provo. After two minutes; the pilot called on 124.3. I issued instructions to immediately turn away from the terrain. The pilot entered an 11;000 MVA at 9;000. I should have assigned about 10 degrees to the right or waited an extra couple miles before assigning the heading I did. The pilot paralleled the lower terrain at 9;000 just a mile or so into the 11;000 MVA. Had I waited a couple extra miles; the heading and altitude I assigned would have been good for many more miles.
Original NASA ASRS Text
Title: A frequency change error resulted in an aircraft entering an area of higher terrain below the MVA.
Narrative: The C560 was inbound from the south for an ILS to PVU. The altitude and heading would put the pilot into lower terrain within 15 miles. I planned on turning the aircraft well before the higher terrain. I issued a frequency change to the remote frequency; 118.85. The pilot read back 118.15. I corrected the pilot but he did not respond. I kept calling on the original frequency; I called on 121.5; and I called Provo Tower to see if they had called Provo. After two minutes; the pilot called on 124.3. I issued instructions to immediately turn away from the terrain. The pilot entered an 11;000 MVA at 9;000. I should have assigned about 10 degrees to the right or waited an extra couple miles before assigning the heading I did. The pilot paralleled the lower terrain at 9;000 just a mile or so into the 11;000 MVA. Had I waited a couple extra miles; the heading and altitude I assigned would have been good for many more miles.
Data retrieved from NASA's ASRS site as of April 2012 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.