The plane took off from London at 9.00 and landed in Geneva at 10.30. - у Вас опечатки When I switched on the dishwasher, the machine made a loud noise.
The plane took off from London at 9.00 and landed in Geneva at 10.30. When I switched on the dishwasher, the machine made a loud noise. В обоих предложениях Past Simple.