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ISBRG One Departure (RNAV) Standard Instrument Departure Chart, Seattle-Tacoma International Airport

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The ISBRG One Departure is an RNAV instrument departure procedure at Seattle-Tacoma International Airport (SEA) available only between 10 PM and 6 AM local time, designed to route departing aircraft on specific northwestward flight paths. Aircraft departing runways 34L, 34C, and 34R follow assigned headings and waypoints—climbing to 940 feet, then proceeding through fixes such as WUREL, ATOME, BREMM, and ISBRG—while maintaining a top altitude of 9,000 feet. The procedure's nighttime-only restriction and structured routing reflect noise-abatement considerations for communities surrounding the airport.

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Notes

FAA instrument departure procedure chart AL-582 for the ISBRG ONE DEPARTURE (ISBRG1.ISBRG) RNAV SID at Seattle-Tacoma International Airport (KSEA/SEA). Covers runways 34L, 34C, and 34R (16L/C/R NA by ATC). Departure route via waypoints DODVE, NESOE, CUSBU, WUREL (cross at or above 3100), ATOME, BREMM, ISBRG with tracks 344°, 349°, 342°, 309°, 264°, 259°. Top altitude 9000 feet; minimum climb 500 ft/NM to 940. Requires RNAV-1, RADAR, DME/DME/IRU or GPS. Procedure available 2200–0600 local. Communications include Seattle DEP CON 120.4/269.125, Seattle Tower 119.9/120.95, GND CON 121.7, CLNC DEL 128.0, D-ATIS 118.0. Effective NW-1, 22 FEB 2024 to 21 MAR 2024.

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