| Delta Virtual Airlines Water Cooler | Airline Operations |
FMC efichency number |
DVA9348
First Officer, B737-800
Joined on January 07 2011
"Why Did That Runway Hit Me!?"
Lexington, KY USA
25 legs, 52.5 hours
13 legs,
33.0 hours online
24 legs,
51.3 hours ACARS
2 legs,
3.8 hours event
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Posted onPost created on
February 04 2011 17:43 ET by Hayden Young
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what number dose DVA use
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DVA7662
Captain, MD-88
Joined on July 30 2009
Online Century Club
Double Century Club
"ZOB ATM"
Daytona Beach, FL USA
218 legs, 332.6 hours
192 legs,
279.0 hours online
215 legs,
326.7 hours ACARS
5 legs,
11.5 hours event
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Posted onPost created on
February 04 2011 18:15 ET by Ryan Geckler
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What aircraft?
Ryan GecklerCaptain, MD-88
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DVA7130
Senior Captain, B727-200
OLP
Joined on March 23 2009
50 State Club
Everett 250 Club
Events Century Club
DVA Five-Year Anniversary
Eight Century Club
Online Eight Century
"Hudson, we have a problem"
Tyrone, GA USA
846 legs, 1,482.4 hours
814 legs,
1,429.8 hours online
818 legs,
1,443.2 hours ACARS
178 legs,
322.6 hours event
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Posted onPost created on
February 04 2011 19:30 ET by Ryan Morse
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efichency 
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DVA5270
Senior Captain, B737-800
Joined on September 27 2007
50 State Club
Everett 500 Club
Online Quintuple Century Club
Nine Century Club
DVA Ten-Year Anniversary
"p=np"
Charleston, SC USA
977 legs, 1,725.8 hours
578 legs,
894.1 hours online
931 legs,
1,647.1 hours ACARS
43 legs,
67.0 hours event
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Posted onPost created on
February 04 2011 21:01 ET by Don Thomas
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I use 80 on the 737. Try some different setting and see how your aircraft preforms differently.
After thought.....Ryan, come on! You never made a typo?
Don ThomasSenior Captain, B737-800
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DVA7130
Senior Captain, B727-200
OLP
Joined on March 23 2009
50 State Club
Everett 250 Club
Events Century Club
DVA Five-Year Anniversary
Eight Century Club
Online Eight Century
"Hudson, we have a problem"
Tyrone, GA USA
846 legs, 1,482.4 hours
814 legs,
1,429.8 hours online
818 legs,
1,443.2 hours ACARS
178 legs,
322.6 hours event
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Posted onPost created on
February 04 2011 21:22 ET by Ryan Morse
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Im just joking with him 
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DVA7897
Captain, B767-300
Joined on October 14 2009
Everett 250 Club
Triple Century Club
Online Triple Century Club
DVA Five-Year Anniversary
Bezau, Vorarlberg AT
363 legs, 1,291.5 hours
331 legs,
1,160.2 hours online
343 legs,
1,173.5 hours ACARS
2 legs,
12.8 hours event
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Posted onPost created on
February 05 2011 12:33 ET by Mathias Ratz
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i use 84 on the 767, whitch results in an good mach .80 cruise 
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DVA7343
Captain, B777-200
OLP
Joined on May 16 2009
50 State Club
Globetrotter
Triple Century Club
"It's not a job but an adventure "
Lugoff, SC USA
368 legs, 798.4 hours
39 legs,
73.8 hours online
358 legs,
777.7 hours ACARS
1 legs,
2.9 hours event
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Posted onPost created on
February 05 2011 14:01 ET by John Morris
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I use 82 on the 737 71 on the A320 and 85 on the 767. But is all about the FMC
John MorrisCaptain, B777-200
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DVA9348
First Officer, B737-800
Joined on January 07 2011
"Why Did That Runway Hit Me!?"
Lexington, KY USA
25 legs, 52.5 hours
13 legs,
33.0 hours online
24 legs,
51.3 hours ACARS
2 legs,
3.8 hours event
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Posted onPost created on
February 05 2011 15:40 ET by Hayden Young
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Thanks Every one ill try the diffrent ones
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DVA3952
Captain, MD-88
Joined on September 07 2006
DVA Fifteen-Year Anniversary
"Airbus, Mcdonnell Douglas"
Chicago, IL USA
85 legs, 161.3 hours
51 legs,
106.0 hours online
77 legs,
141.3 hours ACARS
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Posted onPost created on
February 06 2011 14:56 ET by Alex Jevdic
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I use 200 for the MD-11.
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DVA5212
Captain, B757-200
Joined on June 05 2007
Century Club
"Flaps? 25. Gear? Down and Locked? Coffee? Hot."
Brooklyn, NY USA
118 legs, 200.1 hours
36 legs,
72.4 hours online
116 legs,
197.2 hours ACARS
1 legs,
10.0 hours event
713 legs, 1,390.5 hours total
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Posted onPost created on
February 06 2011 15:02 ET by James Lightbody
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What does the number mean?
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DVA8452
Captain, A320
OLP
Joined on March 28 2010
50 State Club
Event Half Century Club
Online Fifteen Century
Bi-Millennium Club
B757 100 Club
Three Million Mile Club
Toulouse Millennium Club
DVA Fifteen-Year Anniversary
"Cabin crew, please take your seats for takeoff."
Novi, MI
2,997 legs, 9,227.0 hours
1,633 legs,
4,173.1 hours online
2,920 legs,
8,968.6 hours ACARS
65 legs,
189.4 hours event
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Posted onPost created on
February 06 2011 15:06 ET by Justin Lawrence
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James, I believe its the mach cruising speed.
Justin LawrenceCaptain, A320
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DVA4031
Captain, B757-200
Joined on January 20 2007
50 State Club
B757 100 Club
Everett 500 Club
DVA Ten-Year Anniversary
Million Mile Club
Millennium Club
Port Orchard, WA
1,186 legs, 3,343.2 hours
1,177 legs,
3,327.8 hours ACARS
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Posted onPost created on
February 06 2011 15:19 ET by Quinlan Cao
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Justin Lawrence wrote:
James, I believe its the mach cruising speed.
I can't imagine going Mach 2.00 in an MD-11.
Cost index is basically a ratio between the cost of time and cost of fuel, so that the a/c can operate efficiently. I'm sure somebody else can go into more detail, but that's the basic premise.
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DVA5929
Senior Captain, B747-400
OLP
Joined on May 10 2008
Million Mile Club
Online Quadruple Century Club
Everett 500 Club
Globetrotter
Six Century Club
50 State Club
DVA Ten-Year Anniversary
"It's buried under a big W!"
TX USA
651 legs, 3,806.1 hours
472 legs,
2,922.9 hours online
565 legs,
3,319.5 hours ACARS
8 legs,
18.9 hours event
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Posted onPost created on
February 06 2011 19:14 ET by Nicholas Carpenter
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Essentially it is finding a balance between the amount of hours put on the airframe vs. the cost of fuel, as Quinlan said. Airliners are required to have maintenance and overhauls every so often and an aircraft going through that process is not making money. In order to have that happen less often it becomes desirable to fly flights faster instead of slower, so as to accumulate more flights between sessions. At the same time, flying faster burns more fuel than is necessary, and fuel is expensive stuff. The Cost index is calculated to provide the best balance between the two. A higher index gives more performance but burns more fuel and a lower index will be a slower flight but more stingy on the fuel burn.
Nicholas CarpenterSenior Captain, B747-400
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DVA7343
Captain, B777-200
OLP
Joined on May 16 2009
50 State Club
Globetrotter
Triple Century Club
"It's not a job but an adventure "
Lugoff, SC USA
368 legs, 798.4 hours
39 legs,
73.8 hours online
358 legs,
777.7 hours ACARS
1 legs,
2.9 hours event
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Posted onPost created on
February 07 2011 17:31 ET by John Morris
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Good point Nicholas... Something else to keep in mind is the fact of the aircraft you are flying and the FMC that is hooked to it. on my A320 the manual states to set the Cost index to 85 but played with the numbers and found that the bird responds better with a lower number. On my ERJ's I found in the AOM that the cost index needed to be somewhere between 60 and 75 but found personally that the bird worked better at 72 but the PMDG 737 both in the manual, on there web site and some of the tutorial flights that I have run stated that the CI was not implimented... Styrange because I have input numbers from 100 to 499 and have noticed a big difference in the way it performs. with a lower number workes better but the sweet spot on this bird is about 250 which will give me about a .79 cruise at FL330 or 150 will give me a .76 at FL310 so go figure
John MorrisCaptain, B777-200
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DVA7338
Captain, B747-400
E-MAIL
Joined on May 17 2009
"Thou shalt maintain thy airspeed."
Faridabad, Haryana India
60 legs, 151.3 hours
49 legs,
135.1 hours online
58 legs,
145.2 hours ACARS
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Posted onPost created on
February 07 2011 17:52 ET by Gurmeet Arora
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AOA training videos have recommended 100 for B744. Of the many tutorials I have found for B738, most of them have used 25.
Cost index are company specific. But you can use the above 2 as a general guideline, at-least in simulation.
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