IACS registration dates for Alconbury Tri-Base Community Published Nov. 15, 2011 RAF ALCONBURY, United Kingdom -- Registration for the Installation Access Control System for Alconbury and Molesworth ID card holders begins Nov. 28. All ID card holders are required to register for IACS. For more information onIACS visit here. Registration for IACS can be accomplished at Building 511 on RAF Alconbury from 8 a.m. - 7 p.m. Monday - Friday, Pass and Registration at RAF Molesworth from 6 a.m. - 4 p.m. Monday - Friday, and at the Main Gate Visitor Control Center at RAF Alconbury from 2 - 10 p.m. Monday - Friday. Personnel from RAF Alconbury and Upwood are requested to go to Building 511 during these dates: 501st Combat Support Wing Staff and Air Force OSI, Nov. 28 - Nov. 30 423rd Communications Squadron, Dec. 1 - Dec. 2 423rd Medical Squadron, Dec. 5 - Dec. 7 423rd Force Support Squadron, Dec. 8 - Dec. 9 and Dec. 12 Detachment 5, Dec. 13 - Dec. 14 423rd Civil Engineer Squadron, Dec. 15 - Dec. 16 and Dec. 19 - Dec. 20 Department of Defense Dependent Schools, Dec. 27 - Dec. 30 Defense Commissary Agency, Jan. 3 - Jan. 4 Exchange, Jan. 5 - Jan. 6 Personnel from RAF Molesworth are requested to go to Pass and Registration during these dates: Buildings 303 and 348, Nov. 28 - Nov. 30 Building 404, Dec. 1 - Dec. 2 and Dec. 5 Buildings 314, 323 and 401, Dec. 6 - Dec. 8 Buildings 406, 409 and 411, Dec. 9 and Dec. 12 - Dec. 13 Buildings 412, 414 and 415, Dec. Dec. 14 - Dec. 16 Building 403, Dec. 19 - Dec. 21 Building 100, Dec. 22 and Jan. 4 - Jan 6 Africa Command, Jan. 9 - Jan 12 and Jan. 17 - Jan. 20 and Jan. 23 423rd Communications Squadron, Jan. 24 - Jan. 27 Intelligence Fusion Center, Jan. 30 - Feb. 3 and Feb. 6 - Feb. 7. Dependents and personnel who missed their assigned date can register anytime at the Alconbury Main Gate Visitor Control Center from 2 - 10 p.m. Monday - Friday.