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Bangladesh Air Force's F-7 BGI that crashed was a Chinese copy of the MiG-21. Here's what we know about the jet

Bangladesh Air Force's F-7 BGI that crashed was a Chinese copy of the MiG-21. Here's what we know about the jet

Time of India6 days ago
A Bangladesh Air Force fighter jet crashed into a school building in Dhaka's Uttara area on Monday, killing at least 16 people—most of them children—and injuring dozens more. The jet plummeted onto the Milestone School and College campus, erupting in flames upon impact.
What Is the F-7 BGI Fighter Jet?
The aircraft involved in the crash was an F-7 BGI, a Chinese-made fighter jet considered an advanced variant of the Chengdu J-7. Ironically, the J-7 itself was a Chinese clone of the Soviet-era MiG-21, one of the most mass-produced fighter aircraft in history.
While China discontinued the J-7 series in 2013, it had begun exporting the upgraded F-7 BGI version to countries like Bangladesh before that. The F-7 BGI was specially developed by China's Chengdu Aircraft Corporation as a low-cost, multi-role fighter tailored to the needs of the Bangladesh Air Force.
Bangladesh acquired 16 F-7 BGI jets between 2011 and 2013 as part of its effort to modernize its aging fleet.
Key Features of the F-7 BGI
According to information available on Wikipedia , the F-7BGI features include -
Top Speed: Mach 2.2
Weapons: 5 hardpoints for air-to-air missiles, laser- and GPS-guided bombs, drop tanks
Missile Compatibility: Can be equipped with PL-5, PL-7, and possibly PL-9 short-range AAMs
Bomb Load: Can carry up to 3,000 lbs of bombs and unguided rocket pods, including Chinese laser-guided bombs
Radar System: KLJ-6F radar
Cockpit: Fully digital glass cockpit with 3 multifunctional HUD displays and HOTAS (hands-on throttle and stick) controls
Airframe: Based on the J-7G2 design with a double-delta wing, enhancing lift and preventing stalls at high angles of attack
Service Ceiling: 17,500 meters (57,420 feet)
G-Load Tolerance: +8 g / -3 g
Thrust (Afterburner): 82 kN
Maneuverability: Said to be more agile than most MiG-21 variants and many contemporary fighters in its class
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Man with most flying hours on MIG-21 wants one last sortie as it flies into the sunset
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time9 hours ago

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Man with most flying hours on MIG-21 wants one last sortie as it flies into the sunset

When it comes to MIG-21s, there is no one more knowledgeable than Air Commodore Surendra Singh Tyagi (retd), who has a record-breaking 4,306 hours flying the aircraft–a feat acknowledged by the Russians themselves–and a staggering 6316 sorties in total. So when he speaks about the pros and cons of the Russian aircraft, everyone listens. And now, when the departure of MIG-21 BISON from the Indian Air Force (IAF) is imminent, all that the 83-year-old veteran fighter pilot wants is one last take-off roll down the runway in the power-packed aircraft before it bids adieu. 'This is one request which I will be making to the Chief of Air Staff Air Chief Marshal A P Singh, whom I shall be meeting very soon,' says Air Marshal Tyagi in a freewheeling conversation with this reporter over the phone from his home in Jamnagar, Gujarat. The intrepid fighter pilot who flew almost every fighter aircraft in IAF's inventory till he retired in 1996 made Jamnagar his home after multiple tenures there and finally retiring as the air officer commanding of the Jamnagar air base. 'I would also be presenting my logbook, which I have meticulously maintained throughout my service from the first day to the last to the air chief with the request that it may be placed in the IAF museum, where it could serve as an inspiration for future generations,' says Air Commodore Tyagi. Air Commodore Tyagi has flown aircraft ranging from Vampires, Hunters, Gnat, Ajeet, Jaguar, Canberra, MIG-23, MIG-29, and Mirage during his service in the IAF from 1965 to 1996. Air Commodore Tyagi's first operational unit was 27 Squadron flying Hunters before he moved to MIGs. Initially he flew Vampires. In 1968 he trained on MIG-21s in the No. 45 Squadron in Chandigarh, where pilots were given operational conversion training on MIG-21 FL. 'Hunter was a docile aircraft. We never thought of MIG-21s as a problem aircraft, though it was very different. We never felt any problem. It was definitely fast handling, and the challenge was of a kind that you were always busy in the cockpit,' recalls Tyagi. He says the MIG-21 FL type 77 had a fixed gunsight while the Hunter had a gyro sight. 'In firing from a MIG-21, you have to cater for a lot of things. Also, Hunter used to turn very well, and we initially thought it turned better than MIGs. Later, after flying MIGs, I found that the vertical manoeuvring of the aircraft was very good. However, the aircraft would not react instantly, whatever the pilot demanded of it, and the pilot had to understand what the aircraft wanted,' he says. In those early days of MIG-21 in the IAF, the pilots used to wear pressurised spacesuits of the same kind that Cosmonaut Yuri Gagarin had worn into space. 'Actually, when MIG-21 came to India, it was considered to be an interceptor aircraft. It was very agile at great heights, going up to 24 km at times at speeds close to 2.4 mach. You would be really climbing like a rocket. Then we modified it into the ground attack role with rocket pods and external guns, 500 kg bombs on either side, which we used extensively in the 1971 war. We used to get reasonably good results,' Air Commodore Tyagi says. Tyagi says that in the MIG-21 Type 96, the drag increased, and they were not as fast in the ground attack role. But with time came the MIG21 BIS upgrade, and it had a powerful engine. We flew to 12.3 km height in two minutes and 40 seconds. The Type 96 MIG 21 M was also very stable for air-to-ground firing,' he says. Having seen 24 postings in his operational service, Air Commodore Tyagi served in a number of MIG-21 squadrons and went on to command No. 35 and No. 32 squadrons besides serving a tenure in Iraq as an instructor. Air Commodore Tyagi underwent no ejection from MIG-21 but went through a crash landing on the runway in Pathankot in October 1978 and was very lucky to walk away alive. 'I had two rocket pods and three tanks on my aircraft. On short finals, I was asked to go around because of a dog on the runway. I raised my nose, opened maximum power, and started climbing. At around 150 m, the nozzle failed, the cone failed, the engine thrust went down, and the engine flamed out. As part of the ejection sequence which I initiated, the canopy flew off. But I saw that I was too low to continue the ejection within safety margins. The aircraft landed on its belly as the undercarriage was retracted for the go around. On the other side of the runway, there were five aircraft of the No. 3 Squadron waiting to fly, and I was in danger of piling into them. It was a Tuesday, and as I used to fast for Hanuman, I felt nothing would go wrong. The aircraft lurched to a halt well past these, and I unstrapped and ran out. I have never run so hard in my life, and the aircraft exploded behind me. Later, I flew more MIG-21s after the crash than I flew before. 'In 2013, the Russian ambassador gave me a trophy for the maximum hours on MIG-21. Earlier, in 1993, then PM Narasimha Rao called me and felicitated me. I never flew for myself. You flew for the people with you, and you gave them whatever positive things you learnt. The then chief presented me with a golden plaque,' says Air Commodore Tyagi. The veteran pilot says the growth of the IAF is related to the growth of MIG-21 in the country. 'Modernising gradually and slowly now we have reached the fourth generation. At one time, 70-75 per cent of IAF squadrons had MIG-21. When you calculate the rate of accidents, it is not alarming. But when you calculate the number, it is alarming,' he says. Air Commodore Tyagi says an IAF fighter pilot is a 'soldier pilot' because he puts his country ahead of his safety. 'In earlier MIG-21s, we used to see it written on the nose that 'this aircraft costs Rs 47 lakh'. Our pay at the time used to be Rs 1,200-1,400. You used to be conscious that India cannot afford to lose the aircraft. 'Later, when low-level sorties started and we went into the ground attack role, we used to have bird hits. The brief was to pull up, gain height and reheat the engine. But an engine with turbine damage will not relight. Our pilots tried to relight and were so low that ejection was not possible, and they used to crash with aircraft. Abroad, no pilot waits, he ejects,' he says. Air Commodore Tyagi says the fatalities went down when the procedures were amended. 'This is one of the best aircraft ever produced. Every fighter pilot in the world wants to fly a MIG 21,' he says.

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