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
Airline (brand) Airline brand. The Eastwood reissued guitars are built with chambered mahogany bodies as opposed to the hollow fiberglass (Res-O-Glas) bodies used for the original made by Valco. This difference in body material gives the reissue a more traditional electric guitar feel and tone, whereas the original Airline is noted for its unconventional playing feel and response. The reissue also has an adjustable truss rod, accessible from the headstock, while the original had a non-adjustable steel reinforced neck. The aesthetic differences between the original and the reissue include: different tuning heads, (the newer model having greenish knobs, as opposed to the