Decommissioned WAAS Satellite 138 Will Affect GPS

TECHNICAL INFORMATION ANNOUNCEMENT Decommissioned WAAS Satellite 138 WAAS satellite PRN 138 will be decommissioned by the FAA and cease transmissions on May 17th, 2022. A new satellite, PRN 135 was activated on April 26, 2022, replacing PRN 138. After May 17th, 2022, GNSS receivers which have been manually set to receive corrections from PRN 138 will not be able to obtain differential correction. A different PRN will need to be selected. PRN’s 131, 133 are still operational in addition to the newly added PRN 135. What to Do GNSS receivers affected must either manually change WAAS PRN settings to one of the operational satellites 131, 133, 135 or choose “Automatic” to receive GPS corrections. If you have questions or concerns, please contact Technical Supporting using the Create a Case tool or your designated dealer phone number.