A tour helicopter made an unplanned, precautionary landing in Waimanalo Tuesday morning.
According to Richard Schuman, president of Makani Kai Helicopters, one of its company copters landed 20 minutes into its 50-minute flight after the pilot felt trembling in the tail section.
Besides the pilot, there were four visiting passengers, two from Washington state and two from North Dakota.
No injuries were reported.
Since the helicopter is inoperable, another copter came and picked up the passengers to return them to Honolulu.