The entire F-35 fighter jets fleet of the USAF that was grounded on account of a reported cracked turbine blade has been cleared to take off.
The fault was detected during a routine inspection of an air force version of the jet (F-35A) at Edwards Air Force Base in California,
The tests by engine maker Pratt and Whitney, after the reported cracked turbine blade reports, show that the problem was "unique" problem and not a design flaw.
After the test reports, the Pentagon has confirmed that all its 51 planes had been cleared to resume flights.
It may be added that the F-35 is the Pentagon's most expensive weapons programme, with a cost of nearly $400bn (£260bn). And thousands of F-35s are due to be made for the US and its foreign partners.