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717 Engine Options?  
User currently offlineDfwRevolution From United States of America, joined Jan 2010, 912 posts, RR: 51
Posted (10 years 1 month 9 hours ago) and read 1671 times:

I was looking at 717 orders on Boeing's website when I noticed something odd-

http://active.boeing.com/commercial/orders/displaystandardreport.cfm?optReportType=Order&cboStartMonth=02&cboStartYear=2004&cboEndMonth=02&cboEndYear=2004&optDateRange=All&optCustInfo=Customer&cboCustomerName=AllCustomers&cboCountryName=&cboRegionName=&optModelInfo=CurrentModels&cboCurrentModelName=717&cboAllModelName=&cboAllMinorModelName=&optSort=Customer&ViewReportF=View+Report

In the column listing engine choice, there are two abbreviations listed- RR (which I assumed stood for Rolls Royce BR715) but then I saw another- BR. I’m aware that the 717 has the BR715-A1 for the Base Gross Weight and the BR715-C1 for the High Gross Weight models.

I'm assuming that RR and BR abbreviations differentiate between the Base and HGW engine options, but which abbreviation is which?

Thanks,
DFW

2 replies: All unread, jump to last
 
User currently offlineManzoori From UK - England, joined Sep 2002, 1516 posts, RR: 34
Reply 1, posted (10 years 4 weeks 14 hours ago) and read 1452 times:

Hi DFW,

It's possibly to do with the fact that the BR715 engine was originally the lovechild of a union between BMW and Rolls-Royce. The aero engine division of BMW has since been absorbed into Rolls-Royce's global structure as Rolls-Royce Deutschland.

Hope that helps.

Rez
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User currently offlineDfwRevolution From United States of America, joined Jan 2010, 912 posts, RR: 51
Reply 2, posted (10 years 4 weeks 8 hours ago) and read 1429 times:

That's what I was thinking, but there is no clear pattern to the BR or RR abbreviations. It isn't as if all the 717 orders before January 2000 are BR and all 717 after are RR, they are completely random. I think I might have figured it out, but I'd to run it by everyone to see if it makes sense-

The TWA 717 order is as follows-
Aircraft (engine) (date) (total ordered)
717-200 (BR) (31-Dec-1998) (1)
717-200 (RR) (31-Dec-1998) (23)

Since the order was on the same day, I don't think it had anything to do with BMW being absorbed by Rolls Royce. It makes more sense for TWA to order 23 Base Gross Weight and a singe HGW than 23 HGW and a singe Base Gross Weight. So I think the BR indicates the HGW 717 and the RR indicates BGW 717.

Is this a reasonable inference?

Regards,
DFW


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