Russian authorities have ordered carriers to conduct a one-time inspection of the Sukhoi Superjet 100 fleet, in the wake of the fatal Aeroflot accident at Moscow Sheremetyevo last month.
Federal air transport regulator Rosaviatsia says the work must be conducted "within the shortest possible time", and that findings must be submitted to the authority's airworthiness management department.
The work covers such items as a general check of the aircraft's condition, as well as examination of aircraft and engine logs to check performance of maintenance tasks and implementation of service bulletins.
It also requires checks of the on-board emergency equipment, including portable firefighting systems, and aids to communication and guidance.
Rosaviatsia states that operators should examine the effectiveness of measures to address logged issues affecting flight performance.
Investigators are still probing the 5 May accident in which a Superjet 100 suffered a hard landing, after returning to Sheremetyevo with degraded flight controls, and caught fire.
Rosaviatsia says a work completion review certificate should be provided no later than 25 June.