LOT Polish Airlines Flight 7 increased engine wear, since the engines were under greater load. NK-8-4 engines were not reliable enough. Warranty service life was only 5000 hours, and about half of LOT engines failed after 2000–3000 hours. Because of this, Polish pilots often called the Il-62 "flying coffins". In spite of the low reliability, the airline decided to increase overhaul life intervals to reduce the frequency of repairs, which were carried out in Soviet factories and quite expensive. LOT sent a letter to the Ilyushin Design Bureau containing the results of a test in which it was found that the engines could operate normally
American Eagle (airline brand) subsidiary of Trans States Holdings, began American Eagle operations on March 27, 2015, as part of a deal to operate 20 new Embraer E-175 aircraft on behalf of American. These aircraft are based at American’s Los Angeles hub. Air Wisconsin had announced it would exclusively fly as United Express which commenced in March 2018, ending their involvement in operating flights under the American Eagle brand. In May 2018, American Airlines announced the termination of its partnerships with ExpressJet and Trans States Airlines as of 2019, meaning the end of those operators conducting American Eagle flights. As of December 2018, the