At the Irkutsk Aviation Plant (IAZ, part of PAO "Yakovlev"), the onboard cable network was tested using an automated system. The equipment makes it possible to check all of the aircraft's electrical systems for breakdown, open circuit, and short circuit.
IAZ noted that this is a necessary stage before connecting consumers to the network — units, assemblies, and engines.
Group 3.6 of the delivery department of workshop No. 277 carried out the testing and analysis of the results independently. Preparation required considerable effort and time — over the course of a week, specialists installed more than 200 transition harnesses of the system.
Before the aircraft finally goes into full-scale production, we must ensure that the error indicators during the very first testing are close to zero, because until the energized checks are completed, the rest of the work is held back, and this must not be allowed in serial production.
The tests, which take from 20 minutes to 15 hours, are conducted using low- and high-voltage methods. As a result of the inspection, the operator receives a report listing all identified discrepancies.
Earlier, at the Irkutsk Aviation Plant, employees presented their developments, which significantly facilitated the production process.
But the main complaint about the MC-21-310 is its weight. Suggestions have appeared online about which specific units could possibly have excess weight removed.
Read more materials on the topic:
- MC-21 and "Superjet" will be brought to airworthiness in accordance with international standards
- Russian airlines may not receive the MC-21 even in 2026
- The Irkutsk Aviation Plant is assembling 20 MC-21 aircraft simultaneously
