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Delta's "tanked" MD11s  
User currently offlineConcordeBoy From , joined Dec 1969, posts, RR:
Posted (11 years 5 months 1 week 1 day 19 hours ago) and read 2242 times:

Where is/are the extra fuel tank(s) located on DL's tanked MD11s? Assuming they're somewhere in the cargo bay, the airline has to take a payload penalty (volume-wise) because of it right?

12 replies: All unread, jump to last
 
User currently offlineJhooper From United States of America, joined Dec 2001, 6204 posts, RR: 12
Reply 1, posted (11 years 5 months 1 week 1 day 18 hours ago) and read 2198 times:

I'm not sure about the MD11, but most planes I'm familiar with that have "extra" tanks have them in the wings.


Last year 1,944 New Yorkers saw something and said something.
User currently offlineConcordeBoy From , joined Dec 1969, posts, RR:
Reply 2, posted (11 years 5 months 1 week 1 day 18 hours ago) and read 2182 times:

The 777NGs have them in both the wingtips and the forward aft cargo bay*


*772LR


User currently offlineDw747400 From United States of America, joined Aug 2001, 1258 posts, RR: 1
Reply 3, posted (11 years 5 months 1 week 1 day 15 hours ago) and read 2040 times:

Delta installed tanks in the underfloor cargo compartments to bump up the range to what had been promised by MD when the initial orders were placed. This traded cargo volume for fuel, but allowed the planes to fly the routes they had been bought for.

MD eventually developed a multi-step performance improvement package to give the MD-11 the promised design range without cargo tanks. Anyone know if Delta got the PIP and/or removed its tanks?



CFI--Certfied Freakin Idiot
User currently offlineGigneil From United States of America, joined Nov 2002, 16347 posts, RR: 85
Reply 4, posted (11 years 5 months 1 week 1 day 15 hours ago) and read 2019 times:

Best I know... no MD-11 ever reached its design range, which was 8260 nm.

I'm not sure if DL got the PIP, but I'd bet they did.

N


User currently offlineCx flyboy From Hong Kong, joined Dec 1999, 6597 posts, RR: 55
Reply 5, posted (11 years 5 months 1 week 1 day 14 hours ago) and read 1979 times:

This is why we only ever saw N804DE and N806DE in Hong Kong apart from when one of them was in maintenance.

User currently offlineS.p.a.s. From Liechtenstein, joined Mar 2001, 966 posts, RR: 2
Reply 6, posted (11 years 5 months 1 week 1 day 4 hours ago) and read 1885 times:

There's the MD11ER variant, equipped with cargo hold extra tanks. I guess they are located on the aft hold and most probably have the shape of LD3 containers...

AeroCancun used to have an A310 equipped with extra tanks as well, they were located on the aft hold.

Garuda and World Airways had(former) and have(later) this MD11 sub-type.

According the latest JP, all the Delta MD11's have the same mtow and from what I remember from dispatching them out from GRU, none has extra tanks, but might have gotten them after that... BTW, hasn't DL dropped HKG a few years ago?

Rgds

Renato



"ad astra per aspera"
User currently offlineCx flyboy From Hong Kong, joined Dec 1999, 6597 posts, RR: 55
Reply 7, posted (11 years 5 months 1 week 1 day 3 hours ago) and read 1861 times:

Delta dropped HKG a few years ago, so I guess they didn't need the extra tanks on those two MD11s for the rest of the network.

User currently offlineConcordeBoy From , joined Dec 1969, posts, RR:
Reply 8, posted (11 years 5 months 1 week 21 hours ago) and read 1777 times:

Actually CxFB, 6 of DL's fifteen MD11s were tanked at one point.

They still have horrible reliability reaching NRT nonstop during the winter... DL55 often stops in PDX/ANC/CTS and sometimes even includes a scheduled stop in PDX when either winds are forecasted too heavily or ATL's primary runway is having heavy construction/maintenance (which seems to happen quite a bit lately)  Sad


User currently offlineDan2002 From United States of America, joined Dec 2002, 2055 posts, RR: 5
Reply 9, posted (11 years 5 months 1 week 18 hours ago) and read 1734 times:

Hawaiian Air's 717s had the xtra tanks in the aft cabin area for the ferry flight from LGB to HNL.



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User currently offlineGigneil From United States of America, joined Nov 2002, 16347 posts, RR: 85
Reply 10, posted (11 years 5 months 1 week 18 hours ago) and read 1736 times:

Heh the Hawaiian ones are very different than what we're talking about.

The Hawaiian ones are a temporary system that replaces the interior of the aircraft with fuel tanks... not intended for scheduled use... and they're left over from the DC-9 days.

In fact, a DC-9 took 9 of the tanks to get from LGB to HNL. The 717 only required 4. Talk about fuel efficiency.

The MD-11, 772LR, and so on ones are cargo container shaped, and designed for day in day out usage.

Regards DL55: Its just sad that the flight has to stop as frequently as it does... its a distance of less than 6000nm. A damn A332 should be able to traverse this route without too much trouble. I'm sure this flight will work much better for DL after it goes 777.

N


User currently offlineCx flyboy From Hong Kong, joined Dec 1999, 6597 posts, RR: 55
Reply 11, posted (11 years 5 months 1 week 14 hours ago) and read 1701 times:

There were 6 MD11s? I guess the two to always fly to HKG must have been based somewhere different to 804 and 806, which used to fly HKG-LAX, I think.

User currently offlineConcordeBoy From , joined Dec 1969, posts, RR:
Reply 12, posted (11 years 5 months 1 week 13 hours ago) and read 1679 times:

You are correct in that they were the original two to be tanked, the other were installed aftermarket, and I believe a few may have been delivered with the tanks already installed. B747-437B would know, ask him.

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