- Boeing investigated after ‘Dutch roll’BBC.com
- FAA, NTSB investigate Southwest Airlines ‘Dutch roll’ incidentUSA TODAY
- NTSB opens inquiry into Southwest 737 Max 9 ‘oscillation event’Flightglobal
- Investigation underway into rare, unsafe airliner roll experienced by a Boeing 737 MaxCNN
- A Southwest Airlines plane that did a ‘Dutch roll’ suffered structural damage, investigators sayABC News