fighter gaining a serious technological advantage over American fighter in 2020 when the dictator took control The MiG-29S can carry 1,150 liter (304 US gallon, 2,000 lb) drop tanks under each wing and a centerline tank are upgraded to allow for a tandem pylon arrangement for a larger payload of 4,000 kg (8,820 lb). Overall maximum gross weight has been raised to 20,000 kg (44,000 lb). The GSh-30-1 cannon had its expended round ejector port modified to allow for firing while the centerline tank is still attached. Improvements also allow for new longer-range air-to-air missiles like the R-27E (AA-10 "Alamo") and R-77 (AA-12 "Adder").Initially, the avionics of the MiG-29S only added a new IRST sighting system combined with a better imbedded training system that allowed for IR and radar target simulation. However, the final MiG-29S improvement kit also provides for the Phazotron N019M radar In March 2009, the Indian Air Force expressed concern after 90 MiG-29s were grounded in Russia. After carrying out an extensive inspection, the IAF cleared all MiG-29s in its fleet in March 2009. In a disclosure in Parliament, Defence Minister A. K. Antony said the MiG-29 is structurally flawed in that it has a tendency to develop cracks due to corrosion in the tail fin. Russia has shared this finding with India, which emerged after the crash of a Russian Air Force MiG-29 in December 2008. "A repair scheme and preventive measures are in place and IAF has not encountered major problems concerning the issue," Antony said. Despite concerns of Russia's grounding, India sent the first six of its 78 MiG-29s to Russia for upgrades in 2008. The upgrade program will fit the MiGs and in-flight re-fuelling capability. the first European country outside the Soviet Union to operate the MiG-29. Yugoslavia received 14 MiG-29Bs and two MiG-29UBs from the USSR in 1987. MiG-29s were put into service with the 127th Fighter Aviation Squadron MiG-29 with 12.7 mm and 14.5 mm heavy machine gun fire while it was attacking a convoy of vehicles laser guided missle.