Basler BT-67

Basler BT-67
Aeroprints.com · CC BY-SA 3.0 · source
Name	Basler BT-67
Caption	A Basler BT-67 operated by Kenn Borek Air in Antarctica.
Type	Cargo/Utility/Reconnaissance
National origin	United States
Manufacturer	Basler Turbo Conversions
First flight	1990
Primary user	United States Department of State
Number built	60+ conversions
Developed from	Douglas DC-3

Basler BT-67. The Basler BT-67 is a heavily modified and modernized conversion of the classic Douglas DC-3 airframe, produced by Basler Turbo Conversions of Oshkosh, Wisconsin. This extensive rebuild replaces the original piston engines with modern Pratt & Whitney Canada PT6A turboprop engines and incorporates a strengthened airframe, new avionics, and other systems for demanding operations. It is renowned for its rugged performance in extreme environments, serving roles from cargo transport and aerial survey to special operations support for various government and commercial operators worldwide.

Development and conversion

The conversion program was initiated by Basler Turbo Conversions to extend the operational life and capability of the venerable Douglas DC-3, an aircraft first flown in the 1930s. The process involves a complete airframe rebuild at the company's facility in Oshkosh, Wisconsin, where the original structure is extensively reinforced. Key modifications include installing Pratt & Whitney Canada PT6A-67R turboprop engines, fitting a new longer wing with integral fuel tanks, and extending the fuselage. The project aimed to create a modern utility aircraft that retained the Douglas DC-3's legendary ruggedness while offering dramatically improved performance, particularly in hot and high conditions. The first conversion flew in 1990, with development supported by demand from operators in challenging regions like Antarctica and remote areas of South America.

Design and features

The design centers on the replacement of the original Wright R-1820 piston engines with modern Pratt & Whitney Canada PT6A-67R turboprop engines, each driving a Hartzell five-blade constant-speed propeller. The airframe is rebuilt with new longerons, a strengthened fuselage floor, and a new wing that provides greater fuel capacity. The cockpit is equipped with a modern glass cockpit avionics suite, often including systems from Garmin or Collins Aerospace, compatible with Required Navigation Performance and Area navigation standards. Other features can include a large cargo door, de-icing systems, ski- or float-landing gear, and provisions for specialized mission equipment like Synthetic-aperture radar or electro-optical sensors for aerial reconnaissance.

Operational history

The aircraft has established a significant operational history in some of the world's most demanding environments. It has become a workhorse on the Antarctic continent, supporting scientific research for organizations like the United States Antarctic Program and the British Antarctic Survey, often operated by carriers such as Kenn Borek Air. Beyond polar operations, it has been used for aerial survey missions over Africa and South America, humanitarian aid delivery in conflict zones, and cargo transport in remote areas of Canada and Alaska. Military and government agencies, including the United States Department of State and the Royal Thai Army, have employed the type for special operations and utility roles. Its durability was notably demonstrated during the 2016 rescue of a stranded medical team from the South Pole in extreme winter conditions.

Operators

Primary operators include government agencies, commercial cargo carriers, and specialized survey companies. The United States Department of State operates several for worldwide aviation support missions. Commercial operators feature Kenn Borek Air (Canada), which provides vital support in Antarctica, and Austral Líneas Aéreas in Argentina. Military and paramilitary operators have included the Royal Thai Army, the Colombian Air Force, and the Air Force of Zimbabwe. Other significant users are survey companies like Sander Geophysics and Aerovías DAP, which utilize the aircraft for geophysical survey work and regional transport in Chilean Patagonia.

Specifications (BT-67)

Category:Cargo aircraft Category:United States civil utility aircraft 1990–1999 Category:Turboprop aircraft