LOT Polish Airlines — Flight 5055

Communist era Poland did not treat air crashes as a matter of public interest, and no report meeting the standards of Annex 13 of the Chicago Convention was ever produced. The official document released on Flight 5055 runs to roughly 5,000 words and states conclusions without showing the evidence behind them. Because of that, most of what is known publicly today rests on journalists who claim to have seen internal documents, on material declassified after 1989, and on recollections of people involved, rather than on an authoritative public record.

Seven years earlier LOT Flight 007, also an Il-62, was destroyed by a broken low pressure turbine shaft in a strikingly similar sequence. That inquiry was ordered to stop after less than two months, apparently because no crime could be established, and its final report, if one was ever written, has never been released. Whether the lessons from 1980 could have prevented 1987 therefore cannot be settled from public sources.

The official report says the mid shaft roller bearing suffered excessive wear and does not explain why, or whether the bearing was correctly manufactured. Other sources broadly agree the bearing was built with 13 rollers instead of the intended 26, but disagree on the reason. One account with apparent access to primary documents says the count was halved deliberately to cut friction, without the engine designers approving it, and that extra oil holes drilled in the inner race then cracked. The far more widely repeated story, that the factory simply ran short of rollers, has no traceable citation behind it.

The report states only that the cargo hold fire caused the loss of control. Three mechanisms remain on the table and none was ever chosen: the fire melting the plastic brackets holding the stabilizer control rods, the fire weakening the aft fuselage until it deformed into a nose down attitude, or the fire breaking into the rear cabin and driving passengers forward, shifting the centre of gravity.

Turning back to Warsaw rather than diverting to Modlin added roughly eight minutes, and the aircraft came down about 40 seconds short of the runway. The report declined to criticise the crew directly, calling a Modlin landing or a straight in approach unobjectionable while listing advantages and disadvantages for the route actually flown. It gives little weight to the fact that a severed fire alarm circuit meant the crew did not know their aircraft was burning until it was too late to change plan.