Fair enough but it appears the Hungarian register is convenient for ex military helicopters.
https://assets.publishing.service.go...-LFB_10-12.pdf
The bottom line on that accident for those who do not want to click on the link;
The helicopter in which controversial Honister Slate Mine owner Mark Weir died had a counterfeit maintenance certificate.
And an investigation by the Air Accidents Investigation Branch following the fatal crash near the Lake District tourist attraction revealed Mr Weir was not qualified to fly at night.
Let me highlight this part of the report.
Investigators said: “The engine was overhauled by an unapproved repair facility in Serbia and issued with a counterfeit EASA [European Aviation Safety Agency] Form 1.
“A number of serious airworthiness issues were identified with the helicopter during the course of the investigation.
“None of these issues could be directly linked to the cause of the accident, but did raise concerns regarding the way the helicopter was operated.”
The AAIB said the complexity and severity of the issues found and the fact that they are common to a number of other fatal accident investigations conducted of foreign-registered aircraft in the UK warranted a separate safety study.