How One Small Lever Doomed a Private Jet
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How One Small Lever Doomed a Private Jet
106 просмотров · 2 недели назад
Squawk 7700 Archives
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106 просмотров · 2 недели назад
On 26 July 2021 a Challenger 605 arrived too fast and too high at a smoky mountain airport near Lake Tahoe, tried to salvage the landing, and stalled. All six aboard died.
On the afternoon of July 26, 2021, a Bombardier Challenger 605 business jet, registration N605TR, descended through wildfire smoke toward Truckee Tahoe Airport, high in California's Sierra Nevada. The airport's thin mountain air made its shorter runway too short for the heavy jet, so the crew chose to circle to the longer one. But they arrived too fast and too high, overshot the runway centerline, and tried to salvage the approach with a steep left turn. One of the pilots deployed the wing spoilers to lose height; in a hard bank, at low speed, that erased the wing's stall margin. The left wing stalled, the jet rolled onto its back, and it came down in the trees beside a golf course a few hundred yards short of the runway. All six people aboard, the two pilots and four passengers, were killed, along with two dogs.
📌 SOURCES & CREDITS
• U.S. National Transportation Safety Board (NTSB) — Aviation Accident Final Report, case WPR21FA286, on the crash of the Bombardier CL-600-2B16 Challenger 605, N605TR, near Truckee Tahoe Airport, Truckee, California, on July 26, 2021. The Board determined the probable cause to be the first officer's improper decision to attempt to salvage an unstabilized approach by executing a steep left turn to realign the airplane with the runway centerline, and the captain's failure to intervene after recognizing the first officer's erroneous action, while both ignored stall protection system warnings, which resulted in a left-wing stall and an impact with terrain.
• Contributing factors per the NTSB report: the first officer's improper deployment of the flight spoilers, which decreased the airplane's stall margin; the captain's improper setup of the circling approach; and the flight crew's self-induced pressure to perform and poor crew resource management, which degraded their decision-making. The airplane was mechanically sound; no fault was found, and both engines were producing power at impact.
• Technical context drawn from the same report: the Challenger's stall protection system (a stick shaker and an approximately eighty-pound stick pusher, fitted because the airplane's natural stall gives an abrupt, uncommanded roll with no warning); the aircraft-performance study showing that with the spoilers stowed the wing would not have approached a stall until roughly fifty degrees of bank, whereas with full spoilers it stalled at about thirty-six degrees of bank near 130 knots; and a latent flight-management-computer weight error, which the NTSB determined did not significantly affect the outcome.
• On the title and the mountain: the natural assumption is that a jet crashing in the high Sierra was fleeing the terrain. The NTSB record does not support that. The terrain never touched the airplane; the fatal turn was an attempt to salvage an overshoot of the runway. What the mountain did was set the stage — its high-altitude thin air made the short runway too short and forced the more demanding circling approach, and wildfire smoke hid the runway from the captain at the critical moment. The proven cause was an unstabilized approach the crew should have abandoned with a go-around.
• Cockpit voice recorder lines quoted here — including 'I'm gonna get your speed under control for you,' 'patience, patience, patience … you are looking very good, my friend,' and the final exchange, 'what are you doing? … let me have the airplane' — are drawn from the transcript and factual record published in the NTSB report. They are reproduced as accurately as that record permits, not dramatized, and nothing has been invented. Both the CVR and the flight data recorder were recovered and read out.
• Casualty figures (six aboard — two pilots and four passengers, all fatally injured, along with two dogs; no injuries on the ground) follow the official report. The flight was operated privately under Part 91. The passengers were private individuals traveling together and are not named here, out of respect for their families; the pilots are referred to by their roles, as in the report.
• In memory of the six lives lost on the approach to Truckee, and of everyone who was waiting for them at the far end of a short flight into the mountains.
• Some imagery is AI-generated reconstruction; the infographics are original 2D designs; the narration uses a synthetic voice. See the "Altered content" label.