DENVER—The Air Force says it did no advance testing on a specific make of military GPS receiver that later had problems picking up satellite signals after a change in ground-control software.
The Air Force said Monday tests were run on other equipment, but it didn’t contain the receiver that was unable to lock on to Global Positioning System satellites after the change.
The manufacturer of the receivers, Trimble Advanced and Military Systems, says it ran advance tests and found no problems.
An Air Force spokesman says its testers didn’t have copies of the affected receiver. He says the Air Force is now acquiring a more representative sample of receiver applications in use.
The problem occurred in January. The Air Force says the problem has been fixed.
