When Lou and Chin are talking in the hospital, Lou is standing in front of a snack machine. The machine's product display area has a light on that's visible throughout the scene, except for the last shot when it goes dark.
When Chin is having his flashback in the diner with Steve, the creamer and sugar packet container keep switching places. When the camera is over Chin's shoulder, the cream is seen directly in front of him with the sugar to his left. When panned out the sugar is in front and the cream is not in view at all.
The Cessna's propellers stop spinning once the engines run out of fuel, and then the Air Traffic controller tells Danno to feather the propellers, at which point the blades align with the windstream while still not spinning. The purpose of feathering airplane propellers is to align the blades with the windstream to stop them from spinning in the wind (or "windmilling") and avoid further damage to the engines and reduce drag.
As Danny is flying past Waikiki beach about to land the plane you can see the Royal Hawaiian (pink hotel) out the window. The rest of the 5-0 team is on the Nimitz Highway (under the H-1) which is, at minimum 6 miles away. Danny lands the plane on the beach in front of the Hilton Hawaiian Village, less than 1 mile from the RH. There is no way the team would have been able to drive from the Nimitz Highway in time to be waiting around for Danny to land.