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737 MAX split-tip winglet. The McDonnell Douglas MD-11 was the first aircraft with split-tip winglets in 1990. For the 737 Next Generation, third-party vendor Aviation Partners has introduced a similar design to the 737 MAX wingtip device known as the split scimitar winglet, [34] with United Airlines as the launch customer. [35]
The Split Scimitar design as seen at Denver International Airport on a Boeing 737 of Southwest Airlines. APB's Split Scimitar Winglet retrofit program consists of retrofitting 737NG's winglets by replacing the aluminum winglet tip cap with a new aerodynamically shaped "Scimitar" winglet tip cap and by adding a new Scimitar tipped ventral strake.
The initial 737 MAX reduction was 10–12%; it was later enhanced to 14.5%. The fan was widened from 61 inches (150 cm) to 69.4 in (176 cm) by raising the nose gear and placing the engine higher on the wing and further forward. The split tip winglet added 1–1.5% fuel burn reduction and a re-lofted tail cone another 1%.
A quality inspector has alleged that Boeing lost track of hundreds of faulty parts - and some may be on Max 737 planes that have become a focus of safety concerns.. The claims were presented in a ...
The National Transportation Safety Board has flagged fresh concerns about Boeing's 737 planes, saying that at least 40 airlines outside the US may be operating aircraft with faulty components.
The 737 has evolved four winglet types: the 737-200 Mini-winglet, 737 Classic/NG Blended Winglet, 737 Split Scimitar Winglet, and 737 MAX Advanced Technology Winglet. [118] The 737-200 Mini-winglets are part of the Quiet Wing Corp modification kit that received certification in 2005. [118] Blended winglets were standard on the 737 NG since 2000 ...
The CEO of Alaska Airlines said new inspections of the carrier's Boeing 737 Max 9 planes revealed that “many” of the aircraft were found to have loose bolts.
In 2011, Boeing launched the 737 MAX, an updated and re-engined version of the 737NG with more efficient CFM International LEAP-1B engines, and aerodynamic changes with distinctive split-tip winglets. [33] The first 737 MAX performed its first flight in January 2016. [34] The fourth generation 737 MAX supersedes the third generation 737NG.