Overview
- The NTSB's preliminary report, released Friday, says the Cessna 421C had a frozen pitot tube and inoperative pitot heat.
- The pilot told controllers he was using backup gauges and was cleared to descend to 4,000 feet to warm the instruments.
- Radar and tracking data show abrupt turns and a plunge of more than 5,000 feet per minute before contact was lost.
- Investigators documented a debris field about 1.25 miles long, which they say is consistent with an inflight breakup.
- Texas DPS says all five aboard died during the April 30 flight to New Braunfels, and they were Amarillo Pickleball Club members traveling to a tournament.