Use caution about Ethiopian 737-8 crash/Update: China, airline ground Max

UPDATE, 4:30pm PDT: China and Grand Cayman Airlines have ground the 737 MAX. Developing. UPDATE, 6:45pm PDT: China CAAC to review grounding order on their Monday, March 11, for further action.   March 10, 2019 (c) Leeham News: The… Read More

Boeing’s 777X analyzed, Part 4

By Bjorn Fehrm Subscription Required Introduction March 07, 2019, © Leeham News: In our analysis series about the Boeing 777X, it’s time to look at the performance of the 777-9 and 777-8 and compared them to their main… Read More

Rolls cites timing, analysts cite poor financial condition for NMA withdrawal

Subscription Required Introduction March 4, 2019, © Leeham News: Rolls-Royce last week announced it had withdrawn from competition for the Boeing NMA engine provider, citing a mismatch in timing between its Ultra Fan being ready and Boeing’s desired… Read More

Pontifications: Doubts continue over Boeing NMA launch

March 4, 2019, © Leeham News: Another week, another NMA story. For an airplane that doesn’t exist, the prospective Boeing NMA continues to dominate much of the aerospace news. Last week’s announcement by Rolls-Royce that it withdrew—in December,… Read More

Bjorn’s Corner: Yaw stability, Part 2

March 01, 2019, ©. Leeham News: We now continue our discussion of the yaw stability of an airliner. Last week we defined the basic conditions of yaw stability. The aerodynamic side force from an angled airflow stemming from… Read More

Transcript: RR told Boeing before end of 2018 it’s out of NMA competition

Feb. 28, 2019, © Leeham News: The announcement today by Rolls-Royce that it has withdrawn from the competition to provide an engine for the Boeing New Midmarket Airplane came as a surprise. This leaves CFM and Pratt &… Read More

Shareholders OK Boeing-Embraer JV; court, anti-trust approvals next

Subscription Required Introduction Feb. 28, 2019, © Leeham News: Embraer’s shareholders this week approved the joint venture between their company and Boeing, moving another step closer to completion expected by the end of this year. Boeing will own… Read More

Airbus appears poised to launch A321XLR

Subscription Required Introduction Feb. 25, 2019, © Leeham News: The longer Boeing dithers on launching the New Midmarket Airplane, the harder it is to close an already difficult business case. News last week that Airbus finally, at long… Read More

Pontifications: March is a critical month for engine OEMs

Feb. 25, 2019, © Leeham News: Even as Boeing put off a decision whether to launch the New Midmarket Aircraft until 2020, next month could be an important milestone—not only for the program but especially for the engine… Read More

Bjorn’s Corner: Airliner yaw stability

Feb. 22, 2019, ©. Leeham News: After discussing an airliner’s pitch stability we now turn to the yaw stability. A stable aircraft in yaw means we don’t want the aircraft to wag its tail sideways while flying. The… Read More