Preliminary data based on the notification from the Belgium authorities:
A flight of Egypt Air Cargo (MSX541) departed from EBOS to HECA on 01 January 2017.
A flight of Air France (AFR640F) departed from LFPG to EHAM.
MSX541 (A306) was climbing FL210
AFR640F (A320) was maintaining FL220
At 11h42 MSX541 was re-cleared to climb FL210 (Readback was correct)
At 11h45 MSX541 is instructed to maintain FL210 upon reaching combined with traffic information (crossing traffic above from right to left A320 ). The readback from MSX541 of maintaining FL210 was correct.
AFR640F was advised about the climbing Egypt Air aircraft.
Approaching FL210 MSX541 reports following a TCAS/RA and is observed climbing through the cleared level.
TCAS alert was activated on both aircraft:
-MSX541 TCAS info was showing “LVL” RA, but continued climbing.
-AFR640F TCAS info showed “CLB”
Separation between the two aircraft: +/- 0.74NM / 300ft (i.s.o.5NM / 1000 ft)