AFCAD File For KSEA Updated

Preview Seattle Tacoma International Airport, Washington (WA) for the default scenery. By Matthew Brooks / Alpha-India Group.

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Microsoft Flight Simulator X (FSX) including Steam Edition & Prepar3D (P3D)
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Seattle Tacoma International Airport, Washington (WA) for the default scenery. By Matthew Brooks / Alpha-India Group.

Screenshot of plane flying over Seattle Tacoma International Airport.

Screenshot of plane flying over Seattle Tacoma International Airport.

This is KSEA - Seattle-Tacoma International, Alaska for the FSX Default airport and was produced using ADE V1.39.07. KSEA is one of the best reproduced default airports in FSX but has since gained a third parallel runway and a number of other changes - including significantly increased traffic. KSEA is base to Alaska Airlines and Horizon Air and sees large volumes of domestic U.S. travel as well as some international traffic from both U.S. and international airlines. Fedex have a base here and Air Contractors are represented with a sizeable number of aircraft. A number of international cargo airlines call here and Google Earth shots show and an exceptionally large volume of trucks and waiting cargo airside.

Main Changes:

  • Re-aligned all taxiways to their correct path by Jeppesen charts.
  • Changed the 'old' 16R/34L to 16C/34C along with its associated approaches.
  • Added the new runway - 16R/34L - with a full set of approach code.
  • Added the new taxiways built since the default airport was released.
  • Extended passenger and cargo parking to accommodate the volume of traffic.
  • Coded all gates and overspill parking to match real world use as closely as possible.
  • Changed the Tower viewpoint above the tower roof.
  • Created an extensive vehicle network to avoid delays to departing aircraft and to keep service vehicles off taxiways.
  • Changed designators to taxiways as needed and added designators to the new taxiways.
  • Added overlay and diamond crossing arrangements to appropriate taxiways to maintain a smooth flow of traffic.
  • Added and edited numerous Taxiway signs for additional and changed taxiways.
  • Added numerous trucks and other civilian vehicles to aprons and close by parking areas.
  • Added parked vehicles close to the tower and lighting for the cargo and GA aprons - these will be visible to users of FSX Acceleration Pack only.
  • Added an exclude and flatten to provide for the new runway.
  • Added a landclass to change the textures around the airport perimeter including extending the grassed area at the thresholds of 16L, 16C and 16R as per Google Earth.
  • Created a new road to divert South 154th Street (now South 154th Street and South 154th Way) which was moved when the third runway was added.
  • Added a number of additional real world roads left out from the surrounds of the original default airport along with animated traffic running on these.

Special Note:

KSEA Seattle-Tacoma International is a very busy airport. Any arrangement of the runways calls for aircraft to cross active runways to reach the apron or to reach a runway for takeoff. The risk of timeouts whilst waiting for arriving or departing aircraft is significant.

In this Afcad, I set 16L/34R aside for takeoff only, 16C/34C for landing only and 16R/34L for both landing and takeoff.

To maintain a good flow of traffic around the airport and avoid timeouts, I have used the overlay and diamond taxiway techniques at junctions between taxiways and runways. This means that you will see aircraft arriving, for example, on 16C/34C and taxiing across 16L/34R whist other aircraft are taking off on that runway. This is deliberate and enables the airport to operate closer to reality than disappearing aircraft would.

Special Thanks:

Approach codes for the new runway - 16R/34L - were very kindly written for the Afcad by Jim Vile based on current approach plates in Jeppesen charts. The new version of ADE, which is in beta, made this process very much easier with the new approach mode designed by Jim. However, writing full approach code for as busy an airport as this remains a complex matter and beyond the scope of my knowledge at present.

Jim Vile also very kindly dealt with the diversion of South 154th Street, additional roads and the traffic for them.


ADE (Airport Design Editor) by Jon Masterson is an invaluable freeware utility for developing Afcads and the latest beta version - 1.39.07 - is significantly advanced with the addition of the Approach Mode, written by Jim Vile. My thanks to both Jim and Jon for all their help and support on this and all AIG projects.


  1. Remove any existing KSEA AFD/Afcad file in your FSX installation.
  2. Place the three files AIG_KSEA_ADE_MB_Default.BGL, AIG_KSEA_ADE_MB_Default_CVX.BGL and AIG_TRAFFIC_MB_Default_cvx in your Addon Scenery/scenery folder and re-start FSX. AIG_KSEA_ADE_MB_Default_CVX.BGL includes the autogen exclude and flatten as well as a small landclass. The third file AIG_TRAFFIC_MB_Default_cvx is an optional file and contains the animated traffic to run on the roads created by Jim. If you do not want the traffic you do not need to install this file.


  1. Remove or delete the three files AIG_KSEA_ADE_MB_Default.BGL, AIG_KSEA_ADE_MB_Default_CVX.BGL and AIG_TRAFFIC_MB_Default_cvx from your Addon Scenery/scenery folder and re-start FSX.

Images & Screenshots

Screenshot 1Screenshot 2

The archive has 8 files and directories contained within it.

File Contents

This list displays the first 500 files in the package. If the package has more, you will need to download it to view them.

Filename/Directory File Date File Size
KSEA.JPG02.23.09244.10 kB
AIG Ground FSX.png01.30.09188.92 kB
Readme.txt03.15.096.90 kB
AIG_KSEA_TRAFFIC_MB_Default_cvx.BGL03.05.092.93 kB
AIG_KSEA_ADE_MB_Default.BGL03.10.09112.22 kB
AIG_KSEA_ADE_MB_Default_CVX.bgl03.10.091.23 kB
flyawaysimulation.txt10.29.13959 B
Go to Fly Away Simulation.url01.22.1652 B
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patrick Thu, 29 Nov 2018 15:18:29 GMT

Can the software be downloaded to a DVD after which the DVD can be used on my gaming computer? I have access to download programs at wifi locations but not at home.

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