Shifting center of gravity

Looking at the regional distribution of A320neo sales we get aware of the change in aviation.
South and Southeast Asia is where the coming aviation markets are - almost 550 A320neo are ordered for these markets when we count the 78 for Jetstar also for that region. And there should be more to come: China did not order the A320neo so far, but I guess we can bet on an order sooner or later.
Next in the regional distribution

Embraer 2000nm 5 abreast

It is no secret that Embraer looks into building a CSeries rival with an own 5 abreast aircraft. But as Bombardier's CSeries will offer a maximum range of 2950nm and the wing is designed for that range, Embraer reportedly is looking for a range closer to 2000nm, but thinks about a little larger aircraft. Scott Hamilton wondered in a recent blog entry how Embraer could achieve to build a lighter aircraft, as Ronald Epstein, the BoA analyst suggested. Here is a quick explanation:

B737RE Early Fuel Burn Analysis

Scott Hamilton picked up a few interesting details from the Boeing Quarterly Earnings Call regarding the B737RE. The most important question regarding this program remains the fan diameter. It looks like it will settle around 66 inches, so that Boeing can go forward without touching the nose gear.
But what does that mean for fuel efficiency?

The 130 seater market

The launch of the CSeries in July 2008 initiated many discussions about the market those two aircraft are placed: the 110-130 seater market.
Let's have a quick look in the 130 seater market,

B737RE Fan Diameter

The efficiency (SFC) of the LEAP engine for the B737RE (I call it the LEAP-2B as I think it needs a different, aka smaller core) very much depends on the fan diameter, as with a larger fan you can have a higher bypass ratio, enabling a smaller Fan Pressure Ratio (FPR), which translates in a higher propulsive efficiency.
For now there are four fan sizes in discussion, reportedly ranging from 63" to 70". The lower end represents