Winglets will be installed on 28 738s, 10 73Gs (737-700), 10 757-200, and 15 767-300ERs:

http://biz.yahoo.com/pz/070618/121552.html

The 28 738s will also be the ones to get the Song-style AVOD PTVs starting later this summer; they will also have 10 additional seats added though apparently with no perceivable change in legroom (with new Y seats); these 738s will now have 16F and 144Y seats (instead of the current 16F134Y).

Also, not mentioned in the article, but the 15 763ERs with the winglets will be used for longer flights (like ATL-LOS, JFK-TLV, and even LAX-Asia (as Jim Whitehurst inadvertently disclosed during an interview at the Paris Air Show) and will have the lie-flat pilot rest seats installed....I've noticed that they have now worked that into the seat map as every 763ER BE cabin now seems to have seat 5C blocked out as well (in addition to 6C which has always been blocked as it is the current pilot rest seat)...

Ugh. Even with new slimline seats I find it hard to believe that adding an extra row or two will not make a perceivable difference.

Don't the current 738s have an 'unnaturally' large amount of space at the back of the plane (around rows 30, 31) as they had taken seats out previously to limit the capacity to 150 seats (and thus the minimum of 3 FAs)?

Good question. If true, then I suppose adding extra rows will have less of an impact.

Federal rules mandate one flight attendant for every 50 seats

JetBlue recently took out a few seats to give more legroom and save money on an extra FA for only 6 pax

http://www.usatoday.com/travel/fligh...lue-usat_x.htm

So the new 738 config will require 4 FAs. Perhaps DL could learn something from JetBlue in this situation?

Yes - there is no 31A or 32ABC. The aircraft is gaining 1 row of seating, which will likely slightly impact pitch in the rows behind the exit. The good news is that rows ahead of the exits will be more spacious.

A largely unspoken reason for jetBlue removing seats was weight. Also, the extra seats were likely being filled with junk fares to Florida and fewer seats actually improved yields.

Yes, I believe that for DL could be better learn more those information. It would be better getting more legroom and installed the winglet entire fleet is 737NG, 757, 767s. What about there is no installed winglet by 767-400ER?

The 767-400 already has a raked wingtip that works much like a winglet.

Good move- improved stability, manouverability, and I believe it helps fuel mileage.

[QUOTE=ClipperDelta;7927977]Winglets will be installed on 28 738s, 10 73Gs (737-700), 10 757-200, and 15 767-300ERs:

http://biz.yahoo.com/pz/070618/121552.html

The 28 738s will also be the ones to get the Song-style AVOD PTVs starting later this summer; they will also have 10 additional seats added though apparently with no perceivable change in legroom (with new Y seats); these 738s will now have 16F and 144Y seats (instead of the current 16F134Y).

That would mean a minimum staffing of 4 Flight Attendants instaed of 3. That is a minimum of 100+ added flight attendants to support this configuration.

Delta probably did a cost-benefit comparison and figured out that the incremental costs of an extra FA (given the lower labor costs since bankruptcy) per flight will be made up for by the incremental revenue from the extra seats as well as the lower CASM (more seats to spread the cost over)...

Also provides additional range (and/or payload) for these planes - up to an additional 200 nautical miles for the 752s and up to 350 nm (or 5.5 tons of additional payload) for the 763ER...

DL is using these 738s for longer range flights though - they used to have that many seats from what I understand in the 738s (a FA friend told me this), but they took them out to take it down to 3 FAs. I'm sure on the routes they are planning the extra capacity will help.