TagAir Traffic Control(133)

The BANGR Nine Departure is a standardized instrument departure procedure (SID) for pilots flying out of Seattle-Tacoma International Airport (SEA), directing aircraft on specific headings and altitudes depending on which runway they use. Aircraft departing on northbound runways (34L, 34C, 34R) climb to at least 932 feet before routing through waypoints like CUSBU, NESOE, or DODVE, crossing WUREL at or above 3,100 feet, while southbound runway departures (16L, 16C, 16R) follow similar climb profiles through waypoints like CAVOB, OTLIE, or WESET, crossing RENBE at or above 3,000 feet. All routes converge at the BANGR waypoint, which must be crossed at or above 10,000 feet, with specific minimum climb gradients established to manage aircraft noise and terrain clearance in the surrounding communities.

The HAROB Six Departure (RNAV) is a standard instrument departure procedure for Seattle-Tacoma International Airport (SEA) that defines specific climbing routes and altitude requirements for aircraft departing on runways 16L, 16C, 16R, 34L, 34C, and 34R. Aircraft must follow prescribed headings, reach minimum altitudes at designated waypoints, and cross the HAROB fix at or above 10,000 feet before proceeding on one of four available transitions toward destinations such as Hoquiam or Hisku. The procedure requires RNAV 1 navigation capability, radar contact, and DME/DME/IRU or GPS equipment, with specific minimum climb gradients designed to manage aircraft noise and obstacle clearance in the Seattle area.

The JEFPO 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 northwestward via a series of waypoints toward JEFPO. Aircraft departing runways 34L, 34C, and 34R must climb on a heading of 344° and maintain a minimum climb rate of 500 feet per nautical mile up to 940 feet, then follow specific tracks depending on their runway. Departures from runways 16L, 16C, and 16R are not authorized under this procedure, reflecting noise abatement and air traffic control considerations for the surrounding communities.

The OZWLD One Departure (RNAV) is an instrument departure procedure for Seattle-Tacoma International Airport (SEA) that routes aircraft departing from runways 34L, 34C, and 34R northwestward through a series of waypoints—including NESOE, CUSBU, DODVE, WUREL, ATOME, BREMM, and OZWLD—before continuing on course. The procedure is only available between 2200 and 0600 local time, a restriction that reflects noise-mitigation efforts limiting certain departure routes to overnight hours. Aircraft must maintain a minimum climb gradient of 500 feet per nautical mile to 940 feet, cross WUREL at or above 3,100 feet, and maintain 9,000 feet until cleared to their filed altitude.