January 16, 200620 yr In fiddling with the CI function on the FMC, I am finding that a range of up to 180 and even 200 in the CI field seems to produce a realistic climb and cruise speed, depending on the Gross ToW. But certainly a range of 100-150 seems fine based on my RW experience of cruising at Mach 0.86 - 0.865.However, the manual suggests a CI range of 00 to 99 only. Why is this?Jonathan Jonathan Sacks Dell XPS Gen 4, Pentium IV Northwood extreme 3.8Ghz, 3Ghz RAM, eVGA 7900 GTO, 12 GoFlight modules plus MCP-PRO AP and EFIS, GF pedestal, CH rudder pedals, CH throttle quadrant, 42" LG LED, 24" DELL LCD, Windows XP, FS2004, FSUIPC 3.96 FS Autostart 1.1 (Build 11), FS Navigator 4.6, UT, FE, GE, REX, PMDG, Level-D, PSS, etc.
January 17, 200620 yr Isn't the Cost Index unique to the operator? i.e. Doesn't BA's CI of 100 differ from, say, Quantas' CI of 100? I was under the impression that it was scaled to the specifications of the operator, not a rigid figure from Boeing.Andy Scholes
January 17, 200620 yr Commercial Member >Isn't the Cost Index unique to the operator? i.e. Doesn't>BA's CI of 100 differ from, say, Quantas' CI of 100? I was>under the impression that it was scaled to the specifications>of the operator, not a rigid figure from Boeing.>>Andy ScholesDon't believe so (I'll ask Vangelis to be sure) but I think what's meant when people say CI is operator specific is the actual setting itself, ie Airline X uses 85, while Airline Y uses 100. Ryan MaziarzFor fastest support, please submit a ticket at http://support.precisionmanuals.com
January 17, 200620 yr Actually British Airways uses a CI of 90 and yes a CI of 90 or whatever is the same for any airline that uses it. A CI of 100 and up is used if the winds are strong enough or the aircraft is trying to make up time to get to their destination on time. Hope that helps.
January 17, 200620 yr i think when the manual was written, the CI function was not modelled fully, so it was limited to 99. They have now fixed it, so now CI of 100 or greater can be used.Paul
January 18, 200620 yr Author Aha! OK, Paul, thanks!Jonathan Jonathan Sacks Dell XPS Gen 4, Pentium IV Northwood extreme 3.8Ghz, 3Ghz RAM, eVGA 7900 GTO, 12 GoFlight modules plus MCP-PRO AP and EFIS, GF pedestal, CH rudder pedals, CH throttle quadrant, 42" LG LED, 24" DELL LCD, Windows XP, FS2004, FSUIPC 3.96 FS Autostart 1.1 (Build 11), FS Navigator 4.6, UT, FE, GE, REX, PMDG, Level-D, PSS, etc.
January 18, 200620 yr Hi,The CI normally used by KLM is 150. In case of a possible delay it can be 400 to catch up the lost time.
January 18, 200620 yr I know of one major 744F cargo operator that always uses a CI of 250, in normal operations.http://www.bootus.co.uk/pilotinfo.gif Armen L CholakianPMDG Sound Engineer
January 19, 200620 yr Author Clearly, then, a whole array of CI scales abounds. Jonathan Jonathan Sacks Dell XPS Gen 4, Pentium IV Northwood extreme 3.8Ghz, 3Ghz RAM, eVGA 7900 GTO, 12 GoFlight modules plus MCP-PRO AP and EFIS, GF pedestal, CH rudder pedals, CH throttle quadrant, 42" LG LED, 24" DELL LCD, Windows XP, FS2004, FSUIPC 3.96 FS Autostart 1.1 (Build 11), FS Navigator 4.6, UT, FE, GE, REX, PMDG, Level-D, PSS, etc.
January 19, 200620 yr >>In fiddling with the CI function on the FMC, I am finding that>a range of up to 180 and even 200 in the CI field seems to>produce a realistic climb and cruise speed, depending on the>Gross ToW. But certainly a range of 100-150 seems fine based>on my RW experience of cruising at Mach 0.86 - 0.865.>>However, the manual suggests a CI range of 00 to 99 only. Why>is this?>>JonathanAre you saying that the cost index has an effect on the rate of climb and the cruising speed? It has crossed my mind. Ken.
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