Overhauling the cryogenically cooled enhanced-vision system (EVS) installed in many newer Gulfstreams will set an operator back around $30,000–a cost many operators apparently didn’t realize they would be incurring. What’s worse, the overhaul interval for the delicate Kollsman infrared camera system spans just three years/1,500 hours. But this story, it would seem, has a happy ending.
Responding to concerns by operators, Gulfstream and Kollsman have made an important change to the mandatory EVS overhaul language in the maintenance manual by adding an option for on-condition maintenance requiring only a periodic inspection of the camera system. As long as the image quality remains satisfactory, operators can continue flying with the original EVS indefinitely. For buyers of new Gulfstreams carrying the EVS II system the news is even better: Gulfstream has eliminated the overhaul recommendations in favor of periodic inspections of the system’s sealed housing.
More In Avionics
