YUCAIPA (AP) — California Highway Patrol investigators who inspected the wreckage of a tour bus that crashed in the San Bernardino Mountains, killing seven passengers, discovered something startling: All six of the brakes were defective.

The February crash also killed a driver whose pickup truck was smashed as the bus careened out of control down the mountain from the Big Bear ski area.

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According to documents made public Thursday by the National Transportation Safety Board, CHP inspectors found a catastrophic brake failure that a proper inspection could have foreseen.

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Federal inspectors had given bus company Scapadas Magicas a safety clearance a month before, but didn’t ask to examine buses during their visit to the company’s headquarters near San Diego, even though its buses had been cited for a host of mechanical problems during spot roadside inspections.

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