12 Mar 2026 Dugway Proving Ground, Utah (KDPG); Crossing Altitude Incorrect Notices & Alerts / Dugway Proving Ground, Utah (KDPG); Crossing Altitude Incorrect Included Regions (1) United States Included Areas (1) UT Jeppesen NavData for cycle 2603, Effective 19 March 2026, contains incorrect data for Michael AAF, Dugway Proving Ground, Utah (KDPG). TACAN Rwy 12: Michael (MIJ) TACAN is at or above 10,300 on VERNE transition. WE STRONGLY URGE YOU TO MAKE THIS INFORMATION AVAILABLE TO APPROPRIATE CREW MEMBERS OR CUSTOMERS IMMEDIATELY! Revised coding will appear in Jeppesen NavData for cycle 2604, effective 16 April 2026. Until then an entry will appear in the NavData Change Notices beginning 19 March 2026, and this Alert will be posted on the Jeppesen Web site: Notices and Alerts. Please refer to the Dugway Proving Ground, Utah (KDPG) 34-1 chart dated 13 March 2026, effective 19 March 2026 for valid information. KDPG Alert 2603 Back to All Notices & Alerts