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Geg controller described a descent below MVA event noting non-standard phraseology may have been contributing factor.
| Attributes | |
| ACN | 984462 |
| Time | |
| Date | 201112 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | GEG.TRACON |
| State Reference | WA |
| Aircraft 1 | |
| Make Model Name | Rockwell North American Twin Piston Undifferentiated or Other Model |
| Flight Phase | Descent |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | Approach Departure |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | Deviation - Altitude Overshoot Deviation - Procedural Clearance Inflight Event / Encounter CFTT / CFIT |
Narrative:
AC90 inbound to coe airport on a vector. I descended the pilot to 6;500 ft; the MVA in the area. The pilot read back 6;500 ft. The pilot descended below the MVA; la la went off. I climbed the aircraft immediately back up to the assigned MVA altitude of 6;500 ft. Recommendation; use proper la phraseology. I was caught off guard and told the aircraft to expedite a climb back up to the MVA. Make sure to advise pilot they descended below assigned altitude; which was below safe altitude for terrain in the area.
Original NASA ASRS Text
Title: GEG Controller described a descent below MVA event noting non-standard phraseology may have been contributing factor.
Narrative: AC90 inbound to COE airport on a vector. I descended the pilot to 6;500 FT; the MVA in the area. The pilot read back 6;500 FT. The pilot descended below the MVA; LA LA went off. I climbed the aircraft immediately back up to the assigned MVA altitude of 6;500 FT. Recommendation; use proper LA phraseology. I was caught off guard and told the aircraft to expedite a climb back up to the MVA. Make sure to advise pilot they descended below assigned altitude; which was below safe altitude for terrain in the area.
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.