In 5 years of flying I have not had any glow plug go bad. But I guess it is possible that a new glow plug might have a manufacturing defect that causes it to fail after only 10 minutes. Replace it and see what happens.

Also, look closely at the failed plug. Does the coil look crushed? Sometimes metal fragments from manufacturing are left in a new engine. These can bounce around while the engine is running and mess up the plug (and the piston, sleeve, head, case, etc).