Russia’s national flag carrier Aeroflot has canceled at least 50 Sukhoi Superjet 100 (SSJ 100) flights since a crash landing of the Russian-made aircraft killed 41 people last week.

The deadly SSJ landing in Moscow on May 5 ended in the plane’s tail section catching fire on the runway and raised questions about the jet’s safety. A day after the disaster, regional carrier Yamal Airlines said it was cancelling its planned purchase of 10 SSJ 100 planes.