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
Kiwi (shoe polish) Kiwi (shoe polish) Kiwi is the brand name of a shoe polish, first launched and sold in Australia in 1906 and sold in almost 180 countries. Previously owned by the Sara Lee Corporation since 1984, it was sold in 2011 to S. C. Johnson. It is the dominant shoe polish in some countries, including the United Kingdom and the United States, where it has about two-thirds of the market. In Malaysia, Kiwi has become such a household brand for shoe polish that the word "kiwi" has been genericized into a verb in the Malay language, meaning "to polish one's shoes".