PN, I doesn't tell that there wasn't hull loses at FL.
What I mean is
1) there is almost any part of plane immediately located
2) Bot CVR/FDR found in near perfect cond.
3) Plane was in inhabited area with constant control from ground
4) and it SUDDENLY fall apart without notice...
StuntPilot
Also, the Metro Jet docs show that last year (in march) a C check was performed, not a D check.
I'm not pilot/tech but on what was said on Russian forum, there is no such thin on Airbus as C/D check and this list is shows works done which is analog to Boeing D-check.