Почему же наименований? Просто 148 деталей, одного наименования, которое прямо и называется по ссылке – leading-edge slat track. Насчет чисел FG поясняет:до 148 наименований деталей
The FAA adds that Boeing has identified up to 148 parts produced by an unidentified “sub-tier supplier” as being affected. Globally, the issue affects 133 NG and 179 Max aircraft.
In a statement, Boeing said that it has identified 21 737NGs mostly likely to have the parts in question. In the interests of being thorough has called on airlines to check an additional 112 NGs.
“A separate service bulletin will go to 737 Max operators to do inspections before the Max fleet returns to service,” adds the company. “Boeing identified 20 737 Max airplanes that are most likely to have the parts in question. Operators will be asked to check an additional 159 Max aircraft to ensure a thorough assessment.”
“The affected parts may be susceptible to premature failure or cracks resulting from the improper manufacturing process. Although a complete failure of a leading-edge slat track would not result in the loss of the aircraft, a risk remains that a failed part could lead to aircraft damage in fight.”