Either there was a landing gear deployment failure (ie hydraulics or mechanical) or ... there's 2 test pilot jobs that just became vacant at Sukhoi.
Landing Checklist: Gear down; 3 green, (various other items) Flaps - set (landing flap setting).
Someone forgot The landing gear, then the landing checklist. That involves both pilots up the front end and would be a massive oversight.. or there was some kind of failure in the landing gear deployment (which should have resulted in a go around, and a declaration of emergency so that emergency/fire/rescue could be on standby for the gear-up/partial deployment landing.)
Isn't this the same aircraft type that did a CFIT in Indonesia recently? That was poor pilot judgement and lack of any planning. Bit too much "The Right Stuff" type of test piloting going on with this testing program perhaps? Not enough caution and procedure?
I know that Flight Testing isn't standard ops, but sitting there fat dumb and happy as the aircraft lands its
Here's a list of aircraft that I know of that don't have fuel dump capability:
A320 (18, 19, 21), B737 (-100 through -900ER inclusive), DC9, MD80, MD90, B717-200, CRJ, ERJ, Dash-8, Saab SF340, EMB120, E170, E190. Anyone wanna add to the list? (I mean apart from really obvious things like Cessna C172's and the like).
But of course when it's an A320, it's just WRONG.