Description

On 7 February 2010, a Boeing 737-300 being operated by Jet2 on a scheduled passenger flight from Leeds/Bradford UK to Chambery France was making an Instrument Landing System (ILS) approach to runway 18 at destination in day Instrument Meteorological Conditions (IMC) when a Mode 2 Terrain Avoidance and Warning System (TAWS) ‘Terrain, Pull Up’ Warning occurred. A climb was immediately initiated to Visual Meteorological Conditions (VMC) on top and a second ILS approach was then made uneventfully. Despite extreme pitch during the early stages of the pull up climb, none if the 109 occupants, all secured for landing, were injured.

Investigation

An Investigation was carried out by the UK AAIB. The Cockpit Voice Recorder (CVR) had been overwritten but useful Flight Data Recorder (FDR) data was recovered except for the recorded position which was derived from the FMS and therefore “susceptible to errors”. Download of the EGPWS computer provided useful information and the ATC radar recording allowed aircraft position to be determined accurately.