Bangladesh's flying coffin, a cheap copy of Mig-21 and junk from China... MiG-21 or J-7 or F-7, read its story:

News Topical, Digital Desk : An Air Force training fighter jet crashed in Dhaka, Bangladesh. It was a Chinese-made F-7 fighter plane that collided with a college building. 19 people died in this accident, including the pilot, 16 students and two teachers.

The aircraft that crashed is often referred to as the Grandpa fighter jet. It was developed by China in collaboration with the Soviet Union in the 1960s, but when Sino-Soviet relations soured, Beijing reverse-engineered the MiG-21 and created the J-7 or F-7 (export variant).

These countries use Chinese aircraft

Bangladesh, Pakistan, Iran, Myanmar, Namibia, Nigeria, North Korea, Sri Lanka, Sudan, Tanzania and Zimbabwe operate the aircraft. Bangladesh has 36 F-7s, an export version of the J-7. Meanwhile, Pakistan is the biggest operator of the F-17 with at least 120 aircraft. Most of the aircraft in China's stockpile are copies of American and Russian-made fighters.

J-7 and F-7 are the same

The J-7 fighter jet was built by China's Chengdu Aircraft Corporation (CAC). It was a single-engine light fighter aircraft. China built it for ground attack in any weather. Its export version is known as F-7.

In 1961, Mao of China and Nikita Krushchev of the Soviet Union signed an agreement to produce the MiG-21 in China under a license. The MiG-21 was shipped to the Shenyang factory in August 1962 along with some technical documentation, but deteriorating relations between the two powers caused the agreement to be cancelled and China proceeded without Soviet assistance.

Mig-21 is called the flying coffin

Shenyang engineers began reverse engineering the Soviet MiG-21F-13 variant and eventually identified and resolved 249 problems with the aircraft, and produced at least eight technical documents for the aircraft.

In 1964 the Shenyang Aircraft Corporation began production of the first aircraft called the J-7I, which looked almost identical to the MiG-21, but the two aircraft were different internally. The MiG-21 is called the "flying coffin" because of its flight safety record, but the two aircraft have different accident histories.