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
Letter of Reconciliation of the Polish Bishops to the German Bishops Letter of Reconciliation of the Polish Bishops to the German Bishops The Pastoral Letter of the Polish Bishops to their German Brothers (; ) was a pastoral letter sent on 18 November 1965 by Polish bishops of the Roman Catholic Church to their German counterparts. It was foremost an invitation to the 1000 Year Anniversary Celebrations of Poland's Christianization in 966. In this invitation letter the bishops asked for cooperation not only with Catholics but with Protestants as well. While recalling past and recent historical events, the bishops stretched out their hands in forgiveness and are asking for forgiveness. Here