853 Scott Hamilton
Guest Scott Hamilton is fresh from the Paris Air Show, and we talk about next-generation aircraft and engines, industry sustainability, the supply chain, and Boeing’s path back. Also, an NTSB safety recommendation for the CFM Leap-1B engine, and the possibility of restarting production of the C-17.
Guest
Scott Hamilton
Scott Hamilton is the Founder and Managing Director of Leeham Company and has spent more than four decades in the commercial aviation industry. Leeham News and Analysis has been a go-to source for spotting trends and providing verified, credible, relevant aviation news that’s impartial and unbiased. Leeham Consulting Services provides expertise in several areas, including aircraft economic analysis, lease and return condition analysis and negotiations, aircraft product and strategy analysis, fleet planning and contract negotiations, market demand analysis, and MRO strategy.
In our conversation with Scott, we looked at some of the technologies that may appear in next-generation aircraft. That includes ducted and unducted engines, as well as developments with geared fans. In public, the OEMs tout their own technology choices, but in reality, they are quietly working on multiple options.
We touch on Boeing’s ability to make the financial investment required to proceed with a single-aisle replacement, and on the company’s path to recovery.
Scott provides some observations on this year’s Paris Air Show, including the low-key participation by Boeing. Scott offers his thoughts on electric aircraft, alternative fuels, and the airline industry goal for net-zero carbon emissions by 2050.
Scott’s book, Air Wars: The Global Combat Between Airbus and Boeing, was published in 2021. This coming September, a sequel titled The Rise and Fall of Boeing and the Way Back will be published and available on Amazon.
Follow Leham News and Analysis on X, Bluesky, and Facebook.
Aviation News
Boeing Calls For Next-Gen Engine Info For Future Single Aisle
Boeing issued a request for information (RFI) to engine manufacturers for advanced ducted propulsion systems in the 30,000-lb-thrust class. That thrust class is suitable for powering a future single-aisle replacement for the 737. Rolls-Royce and Pratt & Whitney are likely to respond to the RFI with geared, ducted turbofans, which they are proposing to Airbus for its next-generation single aisle (NGSA). CFMI will likely respond with a ducted engine based on technology from its Revolutionary Innovation for Sustainable Engine (RISE) unducted open fan program.
Engine makers tout “Plan A” but have “Plan B” backups in R&D
Each engine OEM has a vision for future engines (open fan, ducted fan, geared fan), but is each company also developing an alternative at the same time? PW’s sister company, Pratt & Whitney Canada, has publicly disclosed its development of an Open Fan engine for a new 70-100-seat aircraft designed by the start-up company MAEVE Aerospace.
See: Maeve Redesigns Its Hybrid-Electric Regional Aircraft
MAEVE Aerospace concept.
NTSB issues rare safety bulletin about potential issues with Boeing 737 Max engines
Two bird strike incidents in 2023 with CFMI LEAP-1B engines caused smoke to enter the ventilation system. The NTSB has issued an urgent safety bulletin, asking operators to inform flight crews of the potential hazard and calling for modifications to engine software. The NTSB notes that Boeing has revised flight manuals. GE Aerospace says it had already made changes.
See: NTSB Recommends Modifications to LEAP-1B Engines
The NTSB found that the engine load reduction device, or LRD, a safety feature designed to reduce the severity of vibrations transmitted from a damaged engine to the airframe, can result in damage to the engine oil system. Such a condition can allow smoke from hot oil to enter the ventilation system and ultimately the cockpit or passenger cabin.
Boeing in Talks to Restart C-17 Production
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