On 18 September 2017, an Embraer 145EP made a hard landing at Sittwe on the first of four flights that day. Clearly evident damage from what FDR data showed had been at least a 4.2g touchdown was not noticed during the pre-flight external inspection or during the two subsequent flights. Extensive structural damage was only identified during a routine overnight inspection. It was noted that one of the inspections which failed to detect damage had been carried out by a licensed engineer and that the aircraft Captain had at no stage reported or recorded a suspected hard landing.