" There are other costs that are not as easy to calculate but are equally disturbing , " according to UK Royal Air Force Wing Commander and FOD researcher Richard Friend . " From accidents such as the Air France Concorde , Flight AF 4590 , there is the loss of life , suffering and effect on the families of those who died , the suspicion of malpractice , guilt , and blame that could last for lifetimes . This harrowing torment is incalculable but should not be forgotten , '' ever '' . If everyone kept this in mind , we would remain vigilant and forever prevent foreign object debris from causing a problem . In fact , many factors combine to cause a chain of events that can lead to a failure . " There have only been two detailed studies of the economic cost of FOD for civil airline operations . The first was by Brad Bachtel of Boeing , who published a value of $ 4 billion USD per year . This top-down value was for several years the standard industry figure for the cost of FOD . The second work ( 2007 ) was by Iain McCreary from the consultancy Insight SRI Ltd . This more detailed report offered a first-cut of the cost of FOD , based on a bottom-up analysis of airline maintenance log records . Here , data was broken into '' per flight direct costs '' and '' per flight indirect costs '' for the top 300 global airports , with detailed footnotes on the supporting data . The Insight SRI research was a standard reference for 2007-2009 as it was the only source presenting costs and thus was quoted by regulators , airports , and technology providers alike
Flight AF 4590
Air France Flight 4590
Foreign object damage