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Delta Installs Drag-Reducing Finlets On 737 Fleet

June 24, 2026

2 min read

Key Takeaways

Delta installing drag-reducing finlets on 240 Boeing 737s.
Finlets reduce fuel burn by 1.2%.
Installation to be completed in 18 months.
Devices certified on 737-700, -800, and -900ER.

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Strategic Implications

This partnership may signal a growing trend towards fuel efficiency modifications in commercial aviation. The adoption of finlets by Delta could indicate a shift in industry priorities towards reducing emissions and operating costs, which may benefit other airlines and manufacturers.

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What Happened

Delta Air Lines Partners With VCT For Fuel Efficiency

Delta Air Lines has begun installing drag-reducing finlets on its fleet of 240 Boeing 737-800s and -900ERs, following an extensive in-service evaluation that validated a 1.2% reduction in fuel burn. The finlets, developed by Vortex Control Technologies, are designed to reshape airflow and reduce drag on the aft fuselage of the aircraft. The installation is expected to be completed in 18 months, with Delta planning to install the finlets during maintenance checks. This development was first reported by Aviation Week.

Source | Originally Published: June 24, 2026

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