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SUMMA Two Departure (SUMMA2.SUMMA) — Seattle-Tacoma International Airport Standard Instrument Departure

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The SUMMA TWO Departure (SUMMA2.SUMMA) is a standard instrument departure procedure for Seattle-Tacoma International Airport (SEA) in Seattle, Washington, requiring both RADAR and DME equipment. Aircraft departing on runways 16L, 16C, 16R, 34L, 34C, and 34R follow specific headings and VOR radials through waypoints NEVJO, NEZUG, and SUMMA intersection before proceeding on assigned transitions toward destinations such as Baker City or Lakeview. Takeoff minimums vary by runway, with some requiring minimum climb gradients of up to 580 feet per nautical mile, and top altitude is assigned by ATC up to FL240.

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Notes

FAA Standard Instrument Departure (SID) chart AL-582 for the SUMMA TWO DEPARTURE (SUMMA2.SUMMA) from Seattle-Tacoma International Airport (KSEA/SEA), effective NW-1, 22 FEB 2024 to 21 MAR 2024. Includes graphical departure route and full text Departure Route Description. Covers takeoff runways 16L, 16C, 16R, 34L, 34C, and 34R with specific climb headings, takeoff minimums, and crossing altitudes. Key waypoints: NEZUG (4000 ft), NEVJO, SUMMA INT, WANTA, KOTAA. Transitions: Baker City (SUMMA2.BKE) via OLM R-100 and BKE R-283 to BKE VOR/DME; Lakeview (SUMMA2.LKV) via SEA R-146 and LKV R-327 to LKV VORTAC. VORTACs referenced: SEA (116.8, Chan 115), OLM Olympia (113.4, Chan 81), PDT Pendleton (114.7, Chan 94), LTJ Klickitat (112.3, Chan 70), BKE Baker City (115.3, Chan 100), LKV Lakeview (112.0, Chan 57). Top altitude assigned by ATC; FL240 shown at SUMMA. RADAR and DME required. Seattle DEP CON 120.4/269.125 (Rwys 16L/C/R), 119.2/284.7 (Rwys 34R/C/L). Airways J54, J5. MEA gap noted 16 NM.

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