NEWDELHI, November 26. /TASS/. The Indian Air Force lost 30 fighters and helicopters in crashes in less than four years from 2011 to 2014, the Indian Defense Ministry said in a statement.

The Defense Ministry estimated the damage at more than $193 million.

The crashes were caused mainly by a human factor and technical faults.

Among the aircraft were three Su-30s, three MiG-29s, a MiG-27, seven MiG-21s and two Mi-17s from those made in the Soviet Union, Russia or India with Soviet and Russian licenses.

The latest was the crash of a Su-30 near the city of Pune in the western state of Maharashtra on October 14. Official indvestigation results have not been announced yet, but a source close to the Air Force told TASS that it occurred through a pilot's fault.

Earlier this year, a military transport C-130J Super Hercules made by the US Lockheed Martin company crashed near the city Gwalior, Madhya Pradesh. In 2008, India signed a contract with the United Sates for delivery of six such planes. The crash was also caused by an error of the crew.

Earlier this week, the Times of India newspaper, citing a defense ministry source, said India has lost 1,100 helicopters and planes since 1970, and 39% of the accidents occurred through pilots’ fault and most of technical malfunctions were caused by improper technical maintenance and aging.