Disposition: What one does with a part that does not meet specifications. In some cases, the part can be re-worked/repaired/modified. In other cases, the part must be scrapped. For the latter case, you may download some light, after-dinner reading if you care to: Download Best Practice - Disposition of Unsalvageable Airacrft Parts Rev 1. What brings this to mind is a small snippet of an article that appears in today's Wichita Eagle newspaper.
July 2014: The Seattle Times published an article (among a series of news articles), First of three 737 fuselages pulled from river’s edge. Excerpts from that article, follow.
Boeing said it is still assessing the extent of the damage to six 737 narrowbody jet fuselages resulting from Thursday’s train derailment near Rivulet, Mont.
Investigators from Boeing and Spirit AeroSystems are examining the wreckage.
The complete fuselages were built by Spirit in Wichita, Kan., and were en route to the Boeing final-assembly plant in Renton.
Company spokesman Doug Alder said Boeing won’t decide what to do with the fuselages — how best to retrieve them and whether they can be repaired or need to be scrapped — until the damage assessment is complete.
An email discussion of what would happen to (disposition of) the fuselages took place among those of us who are aerospace nuts, which discussion I don't recall precisely and which I did not save. When asked what I thought would be the dispositioning of the 737 fuselages, I was pretty certain that they would be scrapped*.
"No. They're little squares of aluminum now."
– Spirit AeroSystems CEO Larry Lawson when asked at Rotary on Monday whether the 737 fuselages involved in a July train derailment would ever fly
* I recall telling someone (perhaps in a comment on someone else's blog or in an email) that, as an aircraft structures engineer I was once assigned to lead a team of investigators into the condition of a complete, new biz jet that had not been chocked before the technicians did an engine run-up. The jet had run into/up over concrete stantions, and further damaged when being removed from those concrete stantions that acted as a jet blast fence for aircraft facing the other way. ("They" failed to lift the aircraft at the points they were told to lift!) My recommendation to the VP of engineering was that we scrap the aircraft. This was difficult to do because the aircraft was to have been delivered to a good customer within a couple of weeks, and there were only two more of that model still being built - there were no "extras" with which the damaged aircraft could be replaced. (The company scrapped the plane, recovering $3M of the $7M aircraft price from insurance. The customer was given a sweet deal on a different model.)