A Condor Airbus A320-200 was in the initial climb out of Kavala’s runway 23L climbing through about 2650 feet MSL when the crew received TCAS Traffic Advisory followed by a resolution advisory to climb a second later.
The crew complied with the instruction while climbing through 2770 feet the TCAS reversed now issuing a resolution advisory to descend. The crew descended the aircraft, descending through about 2450 feet MSL the Terrain Avoidance and Warning System (TAWS) issued a terrain warning prompting the crew to initiate a terrain escape maneuver. The aircraft subsequently continued to Munich without further incident.
Greece’s AAIASB reported the lowest critical altitude during all critical phases was 2529 feet. The occurrence was rated as a serious incident and is being investigated.