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ELMAA Four Departure (ELMAA4.ELMAA) — Seattle-Tacoma International Airport Standard Instrument Departure

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The ELMAA Four Departure is a standard instrument departure procedure for Seattle-Tacoma International Airport (SEA) that routes aircraft southward after takeoff on runways 16L, 16C, or 16R. Departing aircraft climb on headings of 161°–165°, cross the PEAKK waypoint at or above 3,000 feet, then turn right to intercept the SEA R-230 radial toward the ELMAA fix, with onward transitions available to Hoquiam (HQM) or Corvallis (CVO). Notably, departures from runways 34L, 34C, and 34R are not authorized due to noise abatement restrictions, and minimum climb gradients of up to 560 feet per nautical mile are required depending on the runway used.

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Notes

FAA Standard Instrument Departure (SID) procedure chart AL-582 for the ELMAA FOUR DEPARTURE (ELMAA4.ELMAA) at Seattle-Tacoma International Airport (KSEA/SEA), Seattle, Washington. Covers departure routes for Runways 16L, 16C, and 16R (Rwys 34L/C/R NA for noise abatement), with minimum climb gradients of 560’/NM (16L), 515’/NM (16C), and 500’/NM (16R) to 3000 feet. Includes CORVALLIS TRANSITION (ELMAA4.CVO) via YYJ R-161 and CVO R-340 to Corvallis VOR/DME, and HOQUIAM TRANSITION (ELMAA4.HQM) via HQM R-049 to Hoquiam VORTAC. Fix PEAKK at 5 DME/RADAR, ELMAA at 33 DME, top altitude assigned by ATC, FL240 on J589, FL180 on V27/J70. RADAR and DME required. Victoria VOR (YYJ 113.7), Seattle VOR (SEA 116.8), Hoquiam VORTAC (HQM 117.7), Corvallis VOR (CVO 115.4). Effective 14 JUL 2022, chart cycle NW-1, 22 FEB 2024 to 21 MAR 2024.

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