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A11 TRACON controller reported they did not notice an aircraft had flown off course and into an area below the minimum vectoring altitude.
| Attributes | |
| ACN | 1502317 |
| Time | |
| Date | 201712 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | A11.TRACON |
| State Reference | AK |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | Vectors STAR WITTI3 |
| Flight Plan | IFR |
| Person 1 | |
| Function | Approach |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 2 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types Inflight Event / Encounter CFTT / CFIT |
Narrative:
A B737 came over on the RNAV arrival. I was working my other aircraft when the B737 called to ask for clarification on what he was supposed to be doing. At that moment; it was clear the B737 was off the ground track for the RNAV arrival. It wasn't clear at the time if it was his clearance for the arrival that confused him or what. I began to give him a turn when I realized he had already descended below the MVA (minimum vectoring altitude). In the same transmission; I asked if he can maintain his own terrain and obstruction clearance. He said he could; so I gave him a vector and altitude he currently was at to maintain. An hour or so the pilot called to apologize; and say it was their mistake they had come off course from the RNAV STAR.
Original NASA ASRS Text
Title: A11 TRACON Controller reported they did not notice an aircraft had flown off course and into an area below the Minimum Vectoring Altitude.
Narrative: A B737 came over on the RNAV arrival. I was working my other aircraft when the B737 called to ask for clarification on what he was supposed to be doing. At that moment; it was clear the B737 was off the ground track for the RNAV arrival. It wasn't clear at the time if it was his clearance for the arrival that confused him or what. I began to give him a turn when I realized he had already descended below the MVA (Minimum Vectoring Altitude). In the same transmission; I asked if he can maintain his own terrain and obstruction clearance. He said he could; so I gave him a vector and altitude he currently was at to maintain. An hour or so the pilot called to apologize; and say it was their mistake they had come off course from the RNAV STAR.
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.