The commercial pilot and passenger were returning to the airport after completing the pipeline patrol. As the airplane approached the airport, the pilot listened to the recorded weather and contacted the air traffic control tower. The reported wind was steady at 12 to 15 kts from 170°. The pilot was cleared to land on runway 18, and the pilot stated that he "set up for a short field landing in order to make the first taxiway on the right." He said that just before getting to the threshold of the runway, the wind "either quit or abruptly reduced" and the plane started to "sink" rapidly. The pilot thought he had cleared the runway threshold lights and added "a little" back pressure on the flight control yolk. The airplane's left horizontal stabilizer struck a runway threshold light resulting in substantial damage. The pilot indicated that there were no airplane mechanical malfunctions with the airplane during the flight.