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Pia approach controller and a first officer reported an altitude deviation and descending below the minimum vectoring altitude.
| Attributes | |
| ACN | 1703454 |
| Time | |
| Date | 201911 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | PIA.TRACON |
| State Reference | IL |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 2 | |
| Function | Approach First Officer Pilot Flying |
| Qualification | Air Traffic Control Fully Certified Flight Crew Air Transport Pilot (ATP) |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 1.0 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Altitude Overshoot Deviation - Procedural Clearance Inflight Event / Encounter CFTT / CFIT |
Narrative:
Aircraft X was entering the airspace descending to 10;000 feet. Aircraft X requested vectors to the runway however he did not specify an approach request. I issued him vectors for the visual approach to a heading of 200 and descent to an altitude of 2400 feet. Aircraft X read back the correct heading and altitude; subsequently I offered the ILS approach. Aircraft X accepted the ILS approach and was then instructed to fly heading 190. Approximately 3 minutes later I noticed aircraft X was below the minimum vectoring altitude (MVA) and ILS approach altitudes of 2;400 feet. At the time I noticed aircraft X was below the MVA the altitude shown was 2;100 feet. I issued aircraft X to maintain 2;400 feet. Aircraft X climbed to 2;400 feet and continued to complete a safe landing without incident. Due to possible confusion from the pilots perspective of the initial heading issued being similar to the altitude I would have been better served to split he instructions into two transmissions. The pilot had stated it had been a long day so extra vigilance on ensuring the aircraft follows instructions issued.
Original NASA ASRS Text
Title: PIA Approach Controller and a First Officer reported an altitude deviation and descending below the Minimum vectoring Altitude.
Narrative: Aircraft X was entering the airspace descending to 10;000 feet. Aircraft X requested vectors to the runway however he did not specify an approach request. I issued him vectors for the Visual Approach to a heading of 200 and descent to an altitude of 2400 feet. Aircraft X read back the correct heading and altitude; subsequently I offered the ILS approach. Aircraft X accepted the ILS approach and was then instructed to fly heading 190. Approximately 3 minutes later I noticed Aircraft X was below the Minimum Vectoring Altitude (MVA) and ILS approach altitudes of 2;400 feet. At the time I noticed Aircraft X was below the MVA the altitude shown was 2;100 feet. I issued Aircraft X to maintain 2;400 feet. Aircraft X climbed to 2;400 feet and continued to complete a safe landing without incident. Due to possible confusion from the pilots perspective of the initial heading issued being similar to the altitude I would have been better served to split he instructions into two transmissions. The pilot had stated it had been a long day so extra vigilance on ensuring the aircraft follows instructions issued.
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.