U.S. Air Force grounds F-35 fighters over cooling line problems

WASHINGTON (Reuters) - The U.S. Air Force has grounded 13 Lockheed Martin Corp F-35A Lightning II aircraft after discovering peeling and crumbling insulation in avionics cooling lines inside the fuel tanks, an Air Force spokeswoman said on Friday.

from Reuters: U.S. http://ift.tt/2csY2Dy