Posted on

Mountain Two Departure (MONTN2.SEA) — Seattle-Tacoma International Airport Standard Instrument Departure

Document Library
Sea-Tac Airport
Procedures

The Mountain Two Departure (MONTN2.SEA) is an instrument departure procedure for Seattle-Tacoma International Airport (SEA) that provides pilots with specific climb and routing instructions based on which runway they are using. Departing aircraft must meet minimum climb gradients ranging from 500 to 580 feet per nautical mile depending on the runway, and are directed to fly specific headings before turning eastbound on a 071° heading toward fixes like PEAKK or NEZUG. The procedure requires radar and DME equipment, with top altitude assigned by ATC and a lost communications protocol directing pilots to proceed direct to the SEA VORTAC at 4,000 feet.

Open full document

Notes

FAA Standard Instrument Departure (SID) chart AL-582 for the Mountain Two Departure (MONTN2.SEA) from Seattle-Tacoma International Airport (SEA/KSEA). Covers departure route descriptions for Runways 16L, 16C, 16R, 34L, 34C, and 34R. Specifies climb headings (165°, 161°, 341°, 344°, 347°), fixes PEAKK (SEA 5 DME at or above 3000 ft) and NEZUG (SEA 8 DME at or above 4000 ft), right/left turns to heading 071°, RADAR vectors to assigned route/fix, and top altitude assigned by ATC. Takeoff minimums include minimum climb gradients of 500–580 ft per NM. References SEA VORTAC (116.8, Chan 115), PAE (110.6, Chan 43), YDC Princeton (113.9, Chan 86), ELN Ellensburg (117.9, Chan 126), EPH Ephrata (112.6, Chan 73), MWH Moses Lake (115.0, Chan 97), MLP Mullan Pass (117.8, Chan 125), GEG Spokane (115.5, Chan 102). Lost communications procedure: if no contact with ATC leaving 4000 ft, proceed direct SEA VORTAC then on course. Effective NW-1, 22 FEB 2024 to 21 MAR 2024.

Sidebar On/Off
V V