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A11 TRACON controller reported air carrier on ANCHO8 SID entered higher MVA resulting in low altitude alert.
| Attributes | |
| ACN | 1659651 |
| Time | |
| Date | 201906 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | A11.TRACON |
| State Reference | AK |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Large Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Climb |
| Route In Use | SID ANCHO8 |
| Flight Plan | IFR |
| Person 1 | |
| Function | Departure |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types Inflight Event / Encounter CFTT / CFIT |
Narrative:
[Aircraft X] assigned the ANC8 SID climbing and making the right turn. The system initiated a low altitude notification. I issued a low altitude alert to the pilot with an immediate right turn and climb. The pilot completed the turn/climb and entered a safer terrain environment. The ANC8 SID could include a DME arc as part of the procedure to give pilots a finite boundary not to cross. This could alleviate confusion about the wording of the departure. Some autopilots do not appear to fly the procedure in a safe manner. I believe the autopilot would better interpret a DME arc; instead of relying on the pilot to catch the footnote about required heading establishment.
Original NASA ASRS Text
Title: A11 TRACON controller reported air carrier on ANCHO8 SID entered higher MVA resulting in low altitude alert.
Narrative: [Aircraft X] assigned the ANC8 SID climbing and making the right turn. The system initiated a Low Altitude notification. I issued a Low Altitude Alert to the pilot with an immediate right turn and climb. The pilot completed the turn/climb and entered a safer terrain environment. The ANC8 SID could include a DME arc as part of the procedure to give pilots a finite boundary not to cross. This could alleviate confusion about the wording of the departure. Some autopilots do not appear to fly the procedure in a safe manner. I believe the autopilot would better interpret a DME arc; instead of relying on the pilot to catch the footnote about required heading establishment.
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.