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Speakers attended an NTSB webinar May 11.

By David Kaminski-Morrow2021-04-23T11:51:00+01:00 US investigators have found that two sightseeing aircraft were effectively invisible to their pilots before they fatally collided over an Alaskan lake, highlighting the inadequacy of conventional see-and-avoid strategies. The inquiry believes cockpit structures on a descending De Havilland Canada DHC-3 Otter obscured the pilot’s view of a DHC-2 Beaver as the two aircraft converged over Mahoney Lake. About 11s before the collision, the National Transportation Safety Board says, analysis indicates the Beaver would have been hidden behind the...

Alaska Sightseeing Planes’ Crash Blamed on Blocked Views, Failed Alerts Systems By Becky Bohrer and Tom Krisher | April 22, 2021 Two Alaska sightseeing planes collided in 2019 because the views of the pilots were obscured and aircraft-tracking systems failed to warn them about nearby aircraft, federal investigators concluded on Tuesday. Six people died, and 10 people survived. The National Transportation Safety Board in its probable-cause finding determined that the limitations of the “see and avoid” concept prevented the pilots from seeing each other...

Mountain Air Service pilot Randy Sullivan and his four passengers, and a passenger in a plane owned by Taquan Air were killed. Ten people were injured when the aircrafts converged at 3,350 feet (1,021 meters). The NTSB, citing information provided by the operators, said the Ketchikan-based floatplanes were on sightseeing tours and both “converging on a scenic waterfall” before returning to Ketchikan when the crash occurred. Mountain Air’s single-engine de Havilland DHC-2 MK 1 Beaver and Taquan’s larger de Havilland DHC-3 Otter collided just after noon over the west side of George Inle...

Investigation cites inadequate aviation regulations as likely cause of 2019 midair collision near Ketchikan Posted by Eric Stone | Apr 20, 2021 A photo provided by investigators shows a Taquan Air DeHavilland DHC-3 Otter moments before it collided with a Mountain Air Service DHC-2 Beaver in 2019, killing six people and injuring 10. (via NTSB) Two pilots whose planes collided near Ketchikan in 2019 were unable to see or detect each other until a midair crash was unavoidable. That’s according to federal aviation investigators, who say the accident could have been avoided if flightseeing aircr...