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DC-9 And MD-8 Fuel Consumption

Rottamo From United Kingdom, joined Dec 2005, 138 posts, RR: 0
Posted (2 years 9 months 1 week 5 days 7 hours ago) and read 3818 times:

I am interested in about typical fuel consumption per bloc hour of these planes. I guess that this data is available in DOT statistics (in gallons or in $).
Where I can get this data or is someone able to provide it?

I found one source from internet and it claims following:
DC-9-5 744 US gallon
DC-9-4 967 US gallon
DC-9-3 904 US gallon

MD-8 799 US gallon

737-700 690 US gallon
737-800 564 US gallon

For me it does not make sense that 737-800 consume less than 737-700.

Yours,

Rottamo

[Edited 2006-02-23 06:05:30]

8 replies: All unread, jump to last

Laxintl From United States, joined May 2000, 9307 posts, RR: 12
Reply 1, posted (2 years 9 months 1 week 5 days 7 hours ago) and read 3801 times:

Dont have time to dig thru all my DOT data I have, however it could be possible as strange as it might seem for a 737-800 to burn less then a 737-700.

The DOT data is derived off averages and can be affected by the way operators use the aircraft in terms of payloads and stage lenghts. For example a 737-700 doing multiple short hops at an operator will have higher fuel burn on a per block hour computation then for instance one flying longer trips such as transcons. Also payloads(Seating density & cargo) at one operator versus another can further skew the numbers.

Hope this makes a little sense.

From the desert to the sea, to all of Southern California

N1120A From France, joined Dec 2003, 22904 posts, RR: 79
Reply 2, posted (2 years 9 months 1 week 5 days 7 hours ago) and read 3789 times:

Quoting Laxintl (Reply 1):
Also payloads(Seating density & cargo) at one operator versus another can further skew the numbers.

Payload comparisons would always come out ahead for the 73G as the SFC is on the aircraft is the same and it is basically impossible to lower the weight of the 40 seat larger 738 by that much. I do agree that block hour numbers can be skewed by short v. long haul, particularly since the largest 73G operator in the world runs a lot of them on short hops.

Mangeons les French fries, mais surtout pratiquons avec fierte le French kiss

Jetjack74 From United States, joined Jul 2003, 6372 posts, RR: 51
Reply 3, posted (2 years 9 months 1 week 2 days 13 hours ago) and read 3605 times:

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On the DC9-30, it's about 6,000 pounds/hr

"Shut your pie hole and listen to me when I say that I am finished with the checking of the bags conversation."

Fokker70NG From Netherlands, joined Nov 2005, 232 posts, RR: 2
Reply 4, posted (2 years 9 months 1 week 1 day 21 hours ago) and read 3554 times:

Quoting Rottamo (Thread starter):
For me it does not make sense that 737-800 consume less than 737-700.

It indeed makes no sense and it isn't true. I guess you got your data here?
The reason for the bigger fuel consumption of the 73G is that it is paired with the 733 in this list. The 738 however has its own listing, don't ask me why, but it explains the difference.

Some data I've gathered over the last months:

B73G fuel consumption: 794gal/hr (according to AB website)
B738 fuel consumption: 829gal/hr (according to AB website)
MD88 fuel consumption: 750gal/hr (don't recall source)

But when you're looking for fuel consumption figures on the internet, you'll notice that there are very different numbers out there. Of course everything depends on the way of measuring and the situation, and most sources don't state anything about that..

Two things are infinite: the universe and human stupidity; and I'm not sure about the universe. -Albert Einstein

Laxintl From United States, joined May 2000, 9307 posts, RR: 12
Reply 5, posted (2 years 9 months 1 week 15 hours ago) and read 3489 times:

According to DOT here are the average block hour fuel burns for reporting US airlines for the 3rd quarter of 2005.

DC-9-30 = 802gals
DC-9-40 = 838
DC-9-50 = 900
MD-80 = 945
B717 = 680
B737-700 = 713
B737-800 = 792

Keep in mind however that for some types like the 737NGs several varied operators report figures so odds are you have a pretty accurate average, while for other types like the DC-9 only NWA reports the type so you are going to get a figure reflective solely of NWA's particular operation.

From the desert to the sea, to all of Southern California

Cloudyapple From Hong Kong SAR, PRC, joined Jul 2005, 1570 posts, RR: 3
Reply 6, posted (2 years 9 months 5 days 21 hours ago) and read 3420 times:

http://www.eurocontrol.be/eec/galler...EC_notes/2004/EEC_note_2004_12.pdf

BADA is developed by Eurocontrol for us researchers to model aircraft behaviour. This is what we use in our fast time simulations. In the summary file you will find data on TAS, climb/descent rate and fuel consumption of the most common types in use. This is not actual data but derived from a total energy model. It's accuracy is considered good for use for air traffic modelling.

Datails presented are by type by weight category and by flight level. This is a sumamry file - not all data is available there. Should be good for your purpose.

A310/A319/A332/A333/A343/A346/B732/B735/B738/B742/B74S/B744/B752/B763/B772/B773/B921/E145/MD83/MD90/MD11

Rottamo From United Kingdom, joined Dec 2005, 138 posts, RR: 0
Reply 7, posted (2 years 9 months 5 days 11 hours ago) and read 3382 times:

Thanks a lot.

Fokker70NG:
yes, i got data there.

Laxintl: Thanks a lot. I have played with DOT data sometimes. Can I get this fuel data from their webpages? (data query tool).

Cloudyapple: Thanks a lot.

Rottamo