Boeing said Monday it will conduct flight tests above the Strait of Juan de Fuca and areas of Eastern Washington this week that will include low-altitude maneuvers at elevations between 600 and 700 feet.
The flights, using a large 777-300ER and coordinated with the Federal Aviation Administration, will test upgrades to the jet’s Enhanced Ground Proximity Warning System, which warns pilots when they are on a course that comes too close to terrain.
The system also provides awareness of wind shear threats.
Additional testing will be conducted around Paine Field in Everett.
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