The National Transportation Safety Board has disclosed some initial findings into its investigation of the crash of a small plane in Grand Teton National Park last Wednesday. NTSB Air Safety Investigator Zoë Keliher says the occupants of the RV7 aircraft, Russell and Carol Kamtz, had flown from Montana to the Jackson Hole Airport where they refueled, spending just 15 minutes on the ground. The Kamtzes then took off to the north and climbed to about 400 feet before turning south. At that time, Keliher says they made a call to the airport control tower that they were having a problem with their aircraft and were returning to the airport. Eyewitnesses say they saw one of the aircraft’s wings dip as it was turning to the west. Witnesses also reported that the nose of the plane dove toward the ground and the aircraft descended in a near vertical position before impact. There was no fire before or after the crash. NTSB will examine the engine, air frame and other mechanical evidence, and review the “crash signature” on the ground to determine how the plane hit and what crash patterns it may show. She will also look at weather and other environmental factors that may have influenced this crash. The NTSB team is currently reassembling the plane to review mechanical evidence. Further details will be made public as the NTSB investigation concludes.