It was an unbelievable moment for many, seeing a police helicopter on top of a Cardiff house just off the A470 in Cardiff - not least for the family who lived in the Whitchurch home and the pilot and two police colleagues who stepped unhurt from the wreckage, just minutes after it had crashed.
Back in April 2000, the unsuspecting Patterson family were settling down in front of the television for the night when the terrifying event would ruin the home in which they had lived in for 48 years.
