Leeham News and Analysis
There's more to real news than a news release.
Leeham News and Analysis
- Services are driving revenues and profits in difficult times, Part II May 22, 2025
- Boeing publicizes fourth Chief Aerospace Safety Officer Report May 21, 2025
- Boeing’s 2025 annual safety report due this month May 20, 2025
- FAA’s data of accident, incidents, often not shared May 19, 2025
- Bjorn’s Corner: Air Transport’s route to 2050. Part 22. May 16, 2025
Bjorn’s Corner: Geared turbofans
By Bjorn Fehrm
January 13, 2017, ©. Leeham Co: The time has come to go through the reasons why some turbofan engines are designed with a gearbox between the fan and the low pressure shaft.
The principle design is shown in Figure 1. It’s a graphical representation of a geared turbofan from the engine analysis software GasTurb.
Figure 1. GasTurb principal representation of a geared turbofan. Source: GasTurb.
The base idea is to have the low pressure spool of the engine to run at a considerably higher RPM than the fan. Read more
Resurgence for ERJ-145
Note: Nov. 24 and 25 are Thanksgiving Holidays in the US. Our next post will be Monday.
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Introduction
Nov. 23, 2016, © Leeham Co.: The 50-seat regional jet market is dead.
That’s the conventional wisdom.
Well, not quite.
Embraer ERJ-145 is finding new life with regional airlines.
Piedmont Airlines, a unit of American Airlines, is adding the 50-seat Embraer ERJ-145 to its fleet. Eleven joined so far and next year the company plans to add 24 more.
CommutAir, an operator for United Airlines, is adding the same aircraft type to its fleet. Forty of them.
Why the mini-resurgence?
Low fuel prices and cheap airplanes.
Summary
- 50-seat regional jets were considered economically obsolete with high fuel prices.
- Sustain low prices provided a boost to the Embraer ERJ-145.
- Bombardier’s CRJ-200 hasn’t seen a similar resurgence.
CSeries out of London City Airport, Part 2. UPDATED 2017.01.24
By Bjorn Fehrm
Subscription required.
Introduction
This article, which was published on the 14 November, has been updated with new information from Bombardier. The range of the CS100 from London City airport has increased due to improved performance from the aircraft and a new engine version with more thrust, the PW1535G engine.
November 14, 2016, ©. Leeham Co: In the last article about operating the Bombardier (BBD) CS100 from London City Airport (LCY), we could see that the runway is about half the length of an international airport’s runways. This will have a significant impact on the Take Off Weight (TOW) that can be used when commencing a route from London City.
Figure 1. London City airport, housed in the docklands of London’s east end. Source: Wikipedia.
The manufacturers have data in their aircraft brochures that state that one should be able to takeoff with e.g. the CS100 at Maximum Take Off Weight (MTOW) from a runway which is 1,463m/4,800ft long. London City Airport’s runway is 1,508m/4950ft long, so then things should be fine?
No, the figures from the OEMs is the planning figure for actual runway used and London City airports usable take-off Runway is given as 3,934ft. In addition there is 394ft stopping distance available.
To understand how this can be used required a bit of information that we did not have at the time of writing the original article. Some of the information we used was not up to date and we did not use the strongest engine available (PW1535G) when analyzing if an operator could fly direct between New York from London City.
Bombardier came to our help and we have now been able to update the data with which to feed our performance model. This shows among other things that it’s possible to operate a direct connection between London City airport and New York, given that the number of passengers (the payload) is restricted to around 50 passengers or below.
We have revisited the two cases, SWISS European operations from London City and how would a direct operation London-New York work. You find the updated article below.
Summary:
- London City Airport puts special requirements on the aircraft serving it.
- It puts stringent requirement for takeoff and approach/landing.
- We use new information and our performance model to present what routes can be served with a CS100 from the London City Airport.
Bombardier 3Q2016 earnings: revenue down, performance up
Nov. 10, 2016, (c) Leeham Co.: Bombardier reported 3Q2016 and nine months results reflecting lower revenues as downsizing businesses and cost-cutting took effect.
Revenues for the current quarter were $3.7bn vs $4.1bn. For the nine months, revenues were $12bn vs $13.1bn. Earnings Before Interest and Taxes (EBIT), and before special items, were $87m vs $75m for the quarter. Losses are special items were $94m and $4.9bn.
For the nine months, EBIT was $323m this year vs $538m last year. Losses after special items were $722m and $4.66bn.
BBD burned through $320m in cash in the quarter vs $816m a year earlier. For the nine months, the cash burn was $1.56bn vs $2.37bn.
Clouds overhang Bombardier ahead of earnings call
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Introduction
Nov. 9, 2016, © Leeham Co.: Bombardier reports its 3Q2016 and nine month earnings Thursday and as the year prepares to enter its last 45 days, disappointment 
hangs over the company and the stock.
Summary
- Despite winning firm orders for the CSeries from Air Canada and Delta Air Lines early in the year, no other new orders have been announced.
- Deliveries of the CSeries will only be about half those projected, due to engine delivery delays from Pratt & Whitney.
- The $1bn investment from the federal Canadian government hasn’t been achieved, but an announcement may come as early as next week that an agreement has been reached.
- Boeing revised the design of the 737-7 to sit “right on top of” the CS300.
- Embraer (Brazil) is taking the government bailout of CSeries to the World Trade Organization (WTO) in inquiries, with the USA lending support.
Deferrals grow as airlines fight to keep bottom line
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Introduction
Jan. 09, 2017, © Leeham Co.: Airlines have deferred or are thinking about deferring more than 400 airplanes in the near term, a review of decisions and deliberations that have been made during the last 12 months.
LNC tracked announcements last year of deferrals and statements by airlines that they are thinking about doing so.
We began identifying macro-level issues last week in our posts about emerging concerns for the 787 and LNC’s Outlook for 2017.
Reasons vary widely for the deferrals, these reports indicated. Low oil prices. Slowing economies. Declining financial results. Worries about two of the three top Middle Eastern carriers. A capital squeeze in China. Pressure on long-haul carriers from the emerging sector of low cost, long-haul airlines. Preserving capital expenditures to keep the bottom line in the black.
Today we detail the deferrals we tracked.
Summary
Read more
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Posted on January 9, 2017 by Scott Hamilton
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