FT-7 BGI fighter jet crash in Dhaka sparks scrutiny over aging design, structural flaws, and flammable fuel risks, raising serious safety concerns.
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| Despite advanced upgrades, the FT-7 BGI’s Soviet-era design and volatile fuel pose major safety concerns—highlighted by the deadly Dhaka school crash. Image: CH |
Dhaka, July 25, 2025:
The tragic crash of a Bangladesh Air Force FT-7 BGI fighter jet into Milestone School and College in Dhaka has left 31 people dead and at least 165 injured, reviving long-standing concerns about the safety of the aging aircraft series.
While the Inter Services Public Relations Directorate (ISPR) confirmed the aircraft as a combat-ready FT-7 BGI, not merely a training jet, aviation experts have been quick to raise questions about the plane’s design, operational safety, and history of crashes.
The FT-7 BGI, delivered to Bangladesh in 2013 under a deal signed with China in 2011, is a modified version of the Chinese Chengdu J-7, which itself is based on the 1960s-era Soviet MiG-21. The “BGI” suffix stands for “Bangladesh Glass-cockpit Improved,” signaling digital enhancements tailored to Bangladesh’s needs.
Equipped with a digital cockpit, three color multifunctional displays (MFDs), and HOTAS (Hands-On Throttle and Stick) controls, the FT-7 BGI offers pilots an advanced operational interface. Its KLJ-6F radar can detect targets up to 86 km away, while its Martin-Baker ejection seat offers some level of safety in emergencies.
Yet, despite these upgrades, the aircraft retains its original delta wing structure—highly efficient at high speeds but notoriously difficult to control during low-speed landings. Experts point to this as a recurring reason for the series' crash record.
Bangladesh has experienced multiple FT-7 or J-7 crashes in recent years—in 2018, 2019, 2023, and now 2025. Other countries using this aircraft family, such as Pakistan, Myanmar, and Nigeria, have also reported fatal incidents.
One key issue is “flow separation” during landing, a condition where disrupted airflow causes a sudden loss of lift. Given the delta wing’s characteristics, recovering from such a stall demands expert handling, particularly at low altitudes. While ISPR has mentioned “mechanical failure” as the cause of the Milestone crash, the full investigation is still underway.
Beyond structural limitations, the flammability of aviation turbine fuel adds another layer of risk. Jet fuel is a high-energy, kerosene-based hydrocarbon with a flash point of just 38°C. Once ignited, it can produce temperatures up to 1,100°C—hot enough to melt aircraft metal.
In the case of a crash, the explosive power of the fuel transforms the aircraft into a fireball. That’s what likely happened at Milestone School, where the ensuing blaze made rescue efforts even more difficult and deadly.
The FT-7 BGI's collapse in a populated area underscores broader safety concerns regarding military aircraft operations near civilian zones. While modernized in several aspects, the fighter jet remains rooted in outdated Cold War-era designs that struggle with today’s safety and performance expectations.
The incident has reignited public and policy discussions about fleet modernization, risk mitigation, and the importance of stricter safety audits for aging military hardware.
The FT-7 BGI stands as a paradox—modern electronics embedded in an antiquated airframe. Despite its upgrades, the aircraft's core design flaws and the volatile nature of jet fuel make it a continued safety hazard.
The loss at Milestone School serves as a grim reminder that even the most advanced systems are not immune to failure, especially when built on outdated foundations. As investigations continue, the priority must now shift to accountability, transparency, and ensuring that such tragedies are not repeated.