SEATTLE — Boeing today will begin flight tests for a military airplane over Hood Canal.

SEATTLE — Boeing today will begin flight tests for a military airplane over Hood Canal.

The plane, a 737 outfitted with a self-protection system, will release flares and be closely followed by a chase aircraft.

The seven flights between today and Oct. 15 will test the self-protection system aboard a Wedgetail Airborne Early Warning and Control aircraft, with a large rectangular antenna mounted on the upper fuselage and Royal Australian Air Force markings. The chase plane is a T-33 jet.

Observers of the plane may see white light and some smoke, a normal part of the activity.