Description

On 21 January 2002, an Airbus A321-100 being operated by All Nippon Airways on a scheduled passenger flight from Nagoya to Hakodate encountered sudden negative windshear just prior to planned touchdown and the pitch up which followed resulted in the aft fuselage being damaged prior to the initiation of a climb away to position for a further approach which led to a normal landing. Three of the cabin crew sustained minor injuries but the remaining 90 occupants were uninjured.

Investigation

An Investigation was carried out by the Japanese Aircraft and Railway Accidents Investigation Commission. It was established that the First Officer had been PF for the approach and that the Instrument Landing System (ILS) flown had been normal and made into a strong but somewhat gusty headwind with fairly constant direction and unexceptional speed fluctuation between 20 and 40 knots until below 100 feet agl. The Autopilot had been disconnected at 500 feet agl. It was noted that although both predictive and reactive wind shear detection was active on the aircraft, only a reactive alert had been generated by the wind shear encountered.