They were practicing cross wind landings. Not clear whether the gear could not be lowered because of technical issue or if the Crew just forgot to Lower it. No reports of emergency being declared so the latter is more likely at this stage IMO.
If only they'd thought to pull the lever before they landed.......
I do wonder about the quality of the Test Pilots that have been chosen by Sukhoi and Antonov to test the Superjet and the AN-148. They've crashed 3 brand new planes now - apparently for no good reason.
Case of Seniority winning out over ability to get the prize job?