French investigators have disclosed that they are probing an incident in which an Airbus A318 landed after an unstable approach which triggered altitude alarms.

The Air France service had been operating to Paris Orly from Biarritz on 12 September.

Investigation authority BEA states that the crew had been cleared to conduct an ILS approach to Orly’s runway 25.

But it says the approach was “not stabilised” and that the minimum safe-altitude warning system for air traffic control was activated.

It adds that the crew received a cockpit alert over the glideslope.

BEA has not specified whether the pilots considered a go-around, stating only that the crew proceeded to land.

It identifies the aircraft as F-GUGM, a CFM International CFM56-powered airframe which was originally delivered new to the airline in 2006, according to Cirium fleet data.