French President Emmanuel Macron launches Paris Air Show with airborne entrance

Apart from Monday's expected launch of a new version of Boeing (NYSE: BA - news) 's 737 MAX that could net the US planemaker in the region of 150 orders, most industry analysts have muted expectations for orders going into the June 19-25 event.

"The 737 Max 10 extends the competitive advantage of the 737 Max family and we're honoured that so many customers across the world have embraced the outstanding value it will bring to their fleets", said Boeing commercial airplanes president and chief executive Kevin McAllister. "The additional 20 737 MAX 8s and capacity provided by these 20 new 737 MAX 10s will allow SpiceJet to offer even more passengers their award-winning on-board experience, while the airplane's efficiency will keep SpiceJet profitable".

The introduction of the MAX 10 embodies a shift from a focus on "heavy widebodies to single-aisle aircraft with new technologies, with some being certified for the trans-Atlantic", Peluso said.

The Paris Air Show officially begins this Monday, marking the start of a week where the world's biggest aircraft manufacturers look to show off their aircraft to prospective customers in an attempt to stir up fervor and gain orders.

"We certainly agree with that", Lockheed's Hewson told CNBC on the sidelines of the Paris Air Show.

Airbus sales boss John Leahy suggested that numerous orders for his competitor's new model were from existing customers simply converting from older models.

Industry sources say leasing companies Air Lease Corp and Chinese lessor ICBC (HKSE: 1398-OL.HK - news) are hunting for deals and may order aircraft including Airbus A320neos.

However, Airbus immediately hit back with an order for 100 of its popular A320neo planes from leasing firm GECAS, and suggested much of the interest in the MAX 10 was from existing Boeing customers switching orders from other models. The aircraft will enter service in 2020, following the debut of the 737-9 in 2018, and the entry-into-service of both the 737-7 and 200-seat MAX 200.

The new, stretched plane can carry between 180 and 230 passengers, more than its predecessor, the Max 9.

The 737 MAX is the fastest-selling airplane in Boeing history.

Boeing also announced it has more than 240 orders and commitments from more than 10 customers for the airplane. The Max 9 is expected to go into service next year. They include 40 percent of Airbus' 2016 single-engine planes, an increase from 13 percent in 2010.

  • Carolyn Briggs