Missing a step-down fix on the final approach by 90 degrees of track error
Did they do that?
As I understand it they approached the NDB ( "BGC") from the NNE, overflew it SSW bound (at about 90 degrees off inbound course) and then performed a direct join, left turn to fly downwind on the procedure hold at 2500 feet .. However as I see it then went all wrong when, immediately at the end of the downwind hold leg, at the start of the base turn, the pilot flying commenced a further descent rather than flying level until being established inbound towards the NDB.
Plates etc are here:
Incident: Ryanair B738 at Bergerac on Jan 29th 2015, descended below minimum safe altitude on NDB approach