While descending into Dublin during a flight from Newark, New Jersey, the crew of a United Airlines Boeing 757-200 acted in a “nonstandard” manner in responding to an unreliable airspeed indication—an issue most likely caused by ice crystals in the right-side pitot probe. The crew’s actions—two successive pitch-down maneuvers to counter what the first officer incorrectly thought was an aerodynamic stall—contributed to the minor injuries 13 passengers and ...

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