Overview
- The preliminary NTSB report released Friday outlines findings from the Jan. 25 Challenger 600 crash that killed six shortly after takeoff during snowfall in Bangor, Maine.
- Guidance listed a nine-minute de-icing protection window; the jet departed 14 minutes after de-icing was completed and 17 minutes after treatment began, investigators said.
- Flight data indicate both engines continued to increase power until the recording stopped, and investigators reported no evidence of flight-control malfunction.
- Airport cameras and runway evidence show scrape marks as the aircraft skidded off the runway into a grassy area, overturned, and ignited; the debris field measured about 1,270 feet by 150 feet with damage consistent with a prolonged fire.
- The cockpit voice recorder captured the crew discussing the need to reapply de-icing if delays extended to 30 minutes, and officials said the probe continues with a final cause not expected for more than a year.