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
National Association of Letter Carriers National Association of Letter Carriers The National Association of Letter Carriers (NALC) is an American labor union, representing non-rural letter carriers employed by the United States Postal Service. It was founded in 1889. The NALC has 2,500 local branches representing letter carriers in all 50 states, the District of Columbia, Puerto Rico, the Virgin Islands and Guam. Letter carriers were the first postal workers to form their own union. They had tried to organize a national union at least three times—in 1870 in Washington, DC, in 1877 in New York City, and in 1880 again in New York City. Recognizing