Airplane Crashes Upside Down on Runway / Propair Flight 420 Loses a Wing
Black Box Down
00:00
What Is the Cause of the Loss of Hydraulic Pressure?
The aircraft was not equipped with a means to alert the crew of overheated brakes. Brake overheat detection systems were not required, and they're still not required for this class of aircraft. They got the loss of hydraulic pressure pretty quick after takeoff. It was about 12 minutes after take off that they saw the first warning message about the hydraulic pressure. And then subsequent examination of the left brake assembly confirmed it. But these cues weren't strong enough to elicit a reject response from the crew.
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