Posted by Gaspump on February 09, 2006 at 10:03:21 [URL] :
In Reply to: Re: Serial Numbers posted by Jim.UT on February 07, 2006 at 01:06:29:
It was common in those days to use existing models for preliminary parts numbering. Example would be some prelim or development parts for the NAA carried 8N prefix prior to production and during the time the new parts numbering system was being set up. No FMC part could be ordered till a part number was assigned so it was a necessity to have a prelim number especially where vendors could be suppling the part and bids went out early in the development stages. I presume the NCA and NDC were just that, prelim designator for the 600, 800 and would primarily involve parts that were unique and new. The 800 was out at about the same time as the 600 but the early ones could have been 840's which shared many 600 components.
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