The helicopter which crashed into a Glasgow pub in December had not experienced transmission or rotor failure before it hit the ground, a report has confirmed.
The Air Accidents Investigation Branch said it also ruled out damage from foreign objects, and found no evidence of blockages in the exhaust system.
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A GoFundMe page was set up by the children's uncle to raise £15,000 for their funerals.
Lindsay Hoyle said his "family will never be the same" after the death of his 28-year-old daughter Natalie.
Police say they have traced four drivers who are thought to have hit the woman, and added that a fifth vehicle may also have been involved.