About 250 An-2 aircraft, which continue to be operated by Russian airlines, will need to be brought into compliance with the requirements of the obtained type certificate. The specific procedure for inspecting the current fleet was discussed at an industry conference with the participation of Rosaviatsia, the Aviation Register of Russia, SibNIA, operators, and aircraft repair enterprises.

SibNIA will soon send airlines a one-time inspection program that will determine the compliance of each aircraft's type design with the certificate requirements.

Operators will have to carry out the necessary modifications themselves. According to the airworthiness directive, two years are allotted for this. After the work is completed, SibNIA will make the final conclusion on the aircraft's compliance.

Rosaviatsia issued the type certificate for the An-2 to SibNIA in July. The document assigned the institute the status of the aircraft developer and created a legal basis for further modifications to the design. This procedure is now being translated from the general modernization plan into practical work with already operated aircraft.

A separate task at the conference was the design support for the ASH-62IR engine. This power plant remains standard for a significant part of the active An-2s, and its maintenance has already become a separate problem for Russian operation: it was previously reported about the need for domestic production of individual engine components.

The new procedure concerns precisely the active fleet, so its significance goes beyond formal aircraft certification. While further modernization and re-engining options are being prepared for the An-2, operators will have to maintain the airworthiness of already operating machines according to established requirements, and SibNIA will perform the functions of a developer and provide conclusions on compliance.