If you think the F-35 has problems, check out the issues Russia is having with its T-50 5th Gen. fighter:

For more than a year, the Indian Business Standard newspaper has reported on New Delhi’s misgivings. The Indian version of the T-50 is known as the FGFA.

“The FGFA’s current AL-41F1 engines were underpowered, the Russians were reluctant to share critical design information, and the fighter would eventually cost too much,” the paper reported, based on briefings from Indian Air Force officials in December 2013.

A month later, more bad news leaked to the press. India wanted a bigger share of the project. But the engine was still bad, it still cost too much, the plane’s radar was “inadequate” and its “stealth features badly engineered.”

Then in June, a T-50 landed at the Zhukovsky testing grounds near Moscow … and its engine caught fire. Russian officials said the damage was minor —𠂫ut photographs depicted much of the rear fuselage blackened by the blaze.

“What added to the controversy … was Russia’s refusal to share any details of this failure, to the extent that a technical evaluation team of the Indian Air Force that reportedly was present at the site was refused access to inspect the damaged platform,” Monika Chansoria of the Center for Land Warfare Studies in New Delhi told Defense News.