Chinese forces fired flares from land near an unarmed Philippine Coast Guard aircraft operating close to Subi and Mischief Reefs, according to the Philippines’ coastguard, marking a sharp escalation as tensions spread to new South China Sea hotspots. The Philippine Coast Guard released video clips showing the Monday incident during a maritime domain awareness flight over the Spratly Islands.
The People’s Liberation Army fired flares twice during the flight, according to the Philippine Coast Guard. The aircraft was conducting a routine surveillance flight over the Kalayaan Island Group before landing on Pag-asa Island, as reported by inquirer.net. Chinese forces at Zamora, known internationally as Subi Reef, first challenged the aircraft by radio before discharging flares. They repeated the maneuver shortly afterward near Panganiban, or Mischief Reef.
Operational Context and Visual Evidence
Video footage released by the Philippine Coast Guard shows flares being launched from land as the unarmed plane approaches artificial islands. In one clip, a lighthouse matches the exact structure built by China on Subi Reef in 2016. Additional visible infrastructure includes airfields, aircraft hangars, radar installations, and harbors. During the flight, the aircrew also spotted a considerable number of Chinese maritime militia vessels sheltered inside the lagoons of Subi and Mischief reefs, with no personnel visible on the decks, according to inquirer.net.
The Philippine aircrew responded by radio that their flight was routine and legitimate, stating that the presence of Chinese forces on the disputed features violated international law. Philippine Coast Guard Commandant Admiral Ronnie Gil Gavan stated that the use of flares against an unarmed aircraft spoke for itself, noting that the discharge disregarded flight-safety rules under the Convention on International Civil Aviation. Beijing has not responded to the claim.

Did You Know? The 2016 South China Sea arbitral ruling found that Mischief Reef is a low-tide elevation within the Philippines’ exclusive national waters, and that China’s reclamation activities there violated the Philippines’ sovereign rights, though Beijing does not recognize the ruling.
Expert Insight: Incidents involving the discharge of flares near civilian or coast guard aircraft underscore the volatile operational environment in the South China Sea. While the Philippine Coast Guard maintains that its maritime domain awareness flights will continue, such confrontations elevate the risk of miscalculation in disputed airspace.
Potential Implications and Outlook
As diplomatic friction persists between Manila and Beijing, analysts expect that maritime domain awareness flights could face continued challenges in contested sectors of the Spratly Islands. The Philippine Coast Guard has indicated it will press ahead with documenting what it terms aggressive actions and violations of international law. Further developments may depend on whether diplomatic channels open to address air safety and operational protocols around artificial islands.
Frequently Asked Questions
What happened during the flight on Monday?
According to the Philippine Coast Guard, Chinese forces fired multiple flares near an unarmed Philippine aircraft conducting a maritime domain awareness flight near Subi and Mischief Reefs.
How did the Philippine aircrew respond?
The aircrew responded via radio that their operation was routine and legitimate, and that the presence of Chinese forces on the disputed features violated international law, as reported by inquirer.net.
What facilities were observed near the reefs?
Footage and crew observations revealed airfields, aircraft hangars, radar installations, harbors, a lighthouse matching the 2016 Subi Reef construction, and numerous Chinese maritime militia vessels sheltered in the lagoons.
How do you view the balance between routine maritime patrols and the risk of aerial escalation in contested waters?
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