The crash took place in the district of Hernai, about 150 kilometres (90 miles) north of Quetta, the capital of Balochistan province.
Floodwaters are receding and the Indus River, which had swelled until earlier this month, is now rushing at "normal" levels towards the Arabian Sea, officials in the worst-hit southern province say.
Toll rises with 57 more deaths, 25 among them children, and officials say floods inundating a third of the South Asian country were preceded by four heatwaves and multiple raging forest fires provoked by climate crisis.
More than two million acres of agricultural land have been flooded and government is close to a deal to import vegetables and other edible goods from Iran and Afghanistan, officials say.
The consignments sent by the Turkish government, as part of a commitment by President Recep Tayyip Erdogan, include tents, medicines, food items and other essentials.
Scores of people were killed and dozens went missing in the past 24 hours as monsoon downpours and roaring floodwaters continued to pound the country.
Pakistan's government has set up aid and relief camps in regions hit by 133 percent more rain than the average for the past 30 years.
Baloch insurgents say they shot down the "low flying helicopter" with an anti-aircraft weapon, however, a senior military official dismissed the insurgents' claim as propaganda and fake news.
A helicopter on relief operation in Balochistan was reported missing on Monday night with six passengers and crew — including one of the army's top commanders, Lieutenant-General Sarfraz Ali.
Outlawed Balochistan Liberation Army kills Lieutenant Colonel Laeeq Baig Mirza and his friend before Pakistani army could rescue them in operation near restive border with Afghanistan and Iran, officials say.
Poorly built homes across Pakistan – particularly in rural areas – are prone to collapse in floods, which also destroy huge tracts of prime farmland.
Pakistan has an appalling road safety record, with frequent accidents due to poorly maintained routes and vehicles - as well as reckless driving.
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