https://www.devex.com/people/public-policy-what-is-the-hour-rule-for-klm-2384197https://www.devex.com/people/public-policy-what-is-the-hour-rule-for-klm-2384197https://www.devex.com/people/public-policy-what-is-the-hour-rule-for-klm-2384197https://www.devex.com/people/public-policy-what-is-the-hour-rule-for-klm-2384197