The US Army has decided to ground the 'workhorse' H-47 Chinook helicopters.
According to the news agency AFP, the US military decided to stop the flight of large helicopters carrying heavy goods after the incidents of their engines catching fire in the past few years.
Chinook helicopters were considered an icon of American wars from Vietnam to the Middle East.
According to the statement of the US Army, after this decision, heavy duty 400 Chinook helicopters equipped with the best weapons will not be able to fly.
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Army spokeswoman Cynthia Smith said, "The Army has identified the root cause of a fuel leak that caused engine fires in a select number of helicopters." Corrective measures are being taken to resolve this issue.
Although no one was killed or injured, the military has temporarily grounded the fleet of H-47s as a precaution until the malfunction is rectified, he said in a statement.
The Chinook helicopter is known as the CH and is in use by the US Armed Forces, as well as in the UK and about 20 other countries.
This helicopter is made by Boeing company. Twin-rotor helicopters can carry heavy loads and are well armed for combat situations.
These helicopters are also often used in disaster relief missions.
Earlier this year, Germany announced that it would buy 60 Chinooks.