Following the emergency grounding of the Dassault Falcon 7X fleet on 26 May, the European Aviation Safety Agency on 30 May issued a flight condition approval sheet allowing owners to conduct ferry flights to base maintenance stations, according to the manufacturer.
The Federal Aviation Administration issued an equivalent approval for US-registered aircraft on 31 May. Dassault says that "several aircraft have been ferried back to their home base since".
Dassault´s investigation has confirmed that, in the incident on 25 May that sparked the original EASA emergency airworthiness directive, the Falcon 7X´s control laws operated normally, which has allowed the development of a safe ferry procedure using the aircraft´s digital flight control system in "normal" mode. The aircraft landed safely.
The manufacturer said: "The on-site investigation of the aircraft that experienced the [pitch trim] anomaly is complete, but it did not reveal the root cause. Further analysis of the trim control equipment from that aircraft will be conducted at Dassault Aviation laboratories starting today."