Call for availability and to place an order U.S. Terminal Procedures Publications are published in 24 loose-leaf or perfect bound volumes covering the conterminous U.S., Puerto Rico and the Virgin Islands. IFR Charts are updated every 56 days. A EC-1 MI A EC-2 IN, OH A EC-3 WI, IL A NC-1 ND, SD, MN A NC-2 NE, KS A NC-3 IA, MO A NE-1 ME, NH, VT, MA, CT, RI A NE-2 NY, NJ A NE-3 DE, MD, VA, DC A NE-4 PA, WV A NW-1 WA, OR, ID, MT, WY A SC-1 OK, AR A SC-2 NORTHERN TX A SC-3 SOUTHWEST TX A SC-4 LA, MS A SC-5 SOUTHEAST TX A SE-1 KY, TN A SE-2 NC, SC A SE-3 FL, PR, VI A SE-4 AL, GA A SW-1 CO, NM A SW-2 NORTHERN CA A SW-3 SOUTHERN CA A SW-4 NV, AZ, UT ATP ALASKA