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United Airlines Hangars 770 and 710

This project presented unorthodox challenges. Maintaining the functionality of these busy hangar facilities 24/7 was mission-critical. High working conditions (90 feet above the finished floor), and seamless coordination and communication with the United Airlines operations and maintenance team was critical to our team's success.

This heat improvement and modernization project for United Airlines replaced two boilers and associated steam piping and forced air unit heaters in Hangar 770. All existing steam and gas fed unit heaters plus air handling units were removed and replaced in Hanger 710, where the mechanical renovation also included new electrical supply and controls for heating systems, and structural steel modifications to existing catwalks.

Proactive planning and strategic project management decisions allowed the Blinderman team to overcome delays in permit issuance and equipment approvals, and avoid conflicts with day-to-day United Hangar operations.


Chicago o’hare international airport


United airlines




Complex Renovation


Firm Fixed Price


55,000 SF (Hangar 770) / 257,600 SF (Hangar 710)

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