The Philippines grounded its entire fleet of Black Hawk helicopters Thursday after one of the new aircraft crashed during a night-time training flight, killing all six on board.

Three pilots and three airmen died when their S70-i went down near the Crow Valley training range north of Manila on Wednesday, Defence Secretary Delfin Lorenzana said.

"The entire Black Hawk fleet are grounded while the incident is being investigated," Lorenzana said.

The country ordered 16 of the multi-role aircraft from a Polish firm that made them under licence from the Sikorsky division of US defence manufacturer Lockheed Martin.

Eleven have been delivered since late 2020.

The government bought the Black Hawks to replace the air force's ageing fleet of Bell UH-1H helicopters, commonly known as the Huey. Many of them were acquired as surplus from the United States, Manila's longtime military ally.

Lorenzana said the Black Hawk fleet has been used for humanitarian assistance and disaster response, including flying Covid-19 vaccines to remote areas of the archipelago nation.

The Philippine military is also fighting a long-running communist insurgency across the country and Islamic State-linked militants in the south.

Russian military helicopter crash kills three
Saint Petersburg (AFP) June 24, 2021 –

A Russian military helicopter on a training flight crashed on Thursday evening near Saint Petersburg, killing three people, local authorities said.

The Mi-8, which belonged to the Russian National Guard (Rosgvardia), was carrying three crew members who were all killed in the crash, according to a spokesperson quoted by the local online news site Fontanka.

The helicopter went down in the Gathina region in northwest Russia "following an air incident" while on a training flight, according to the same source.