Widebody Transport
Flight Crew Air Transport Pilot (ATP)
ATC Issue All Types; Conflict Airborne Conflict; Deviation - Altitude Excursion From Assigned Altitude
Flight Crew FLC complied w / Automation / Advisory; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Took Evasive Action
Airport; Procedure; Airspace Structure
At 3000 feet on approach to 16L at SEA received TA with a 737 on approach to 16R. At 2000 feet received an RA. Executed RA 'descend' mode. 'Clear of conflict' at 1400 feet. Landing uneventful. After the event I called the Seattle Tower and asked why we received an RA. The Seattle Tower said this is quite common on VFR days because the runways are so close together. The Tower said they would check with their Approach Radar and find out why they put both airplanes so close together. [Suggest] better separation of aircraft on VFR days.
Air carrier Captain reported receiving an RA on approach to SEA Runway 16L from a 737 on approach to Runway 16R.