Per avherald:
"The last transponder data were received from position N9.027 E39.153 about 21nm east of Addis Ababa at FL086. Terrain elevation at that point is 8130 feet MSL, FL086 corrected for QNH indicates the aircraft was flying at 8173 feet MSL at that position."
Note that this data is very suspicious to me because corrected for QNH the aircraft hardly reached 500ft AGL at any time on the whole flight.