Look up Terminal Procedure Publications for U.S. airports (beta).
| HLX | TWIN COUNTY | IAP | RNAV (GPS) RWY 01 |
| HLX | TWIN COUNTY | IAP | RNAV (GPS) RWY 19 |
| HLX | TWIN COUNTY | MIN | ALTERNATE MINIMUMS |
| HLX | TWIN COUNTY | MIN | TAKEOFF MINIMUMS |
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