TF Hawk, Inc.
About TF Hawk, Inc.
C-337 O-2 Skymaster  Golden Hawk Mk I and Mk II
A-37 Dragonfly  Dragonhawk
U-21C King Air - King Air Hawk

U-21C / C-90 King Air Conversion


  • A Proven, Utility Military Turboprop Aircraft as a Base Platform

  • Remanufactured Airframe (Near Zero-Timed)

  • Factory New Engines - with PT-6A-41 Conversion

  • Configurable for Light Cargo Transportation Missions

  • Configurable for VIP Transportation Missions

  • Reversible Propeller Pitch

  • Wide Cargo Door (side-mount) with Integrated Air Stair

  • Engines run on Jet A or TS-1 (not 100LL AvGas)

  • Garmin GNS-530A GPS Moving Map (and NAV/COM/ILS) and High-End Avionics Package

  • Custom Cockpit Panel and Radios (UHF/VHF)

  • Optional PolyArmor Floor Protection

  • Optional Track24 or CommTech Transponder for full integration into Tapestry

  • Optional Air Conditioning

  • Optional Oxygen System

  • Optional Pressurization for High Altitude Operations

  • Optional Large Main Landing Gear Wheels for Unimproved Runways

  • Optional Surface Search Radar

  • Optional Weather Radar


The U-21C KING AIR HAWK is a twin-engine, turboprop jet aircraft that serves in a variety of utility roles, including personnel transportation (up to eight passengers) and light cargo transportation usages. Additionally, once it is modernized and up-engined, it is also an ideal electronics and reconnaissance platform, capable of taking off on the hottest day, even in desert environments.

The King Air has been in continuous production since 1964, the longest production run of any civilian turboprop aircraft. It has outlasted all of its previous competitors and as of 2006 is one of only two twin-turboprop business airplanes in production (the other is the Piaggio Avanti).

Historically, the King Air family comprises a number of models that fall into four families, the Model 90 series, Model 100 series, Model 200 series, and Model 300 series. The last two types were originally marketed as the Super King Air, but the "Super" moniker was dropped in 1996. As of 2006, the only small King Air in production is the conventional-tail C90GT.

The U.S. military used the King Air 90 in various roles, in fact with all three services (USAF, US Navy and the US Army). The aircraft was employed primarily as a light utility cargo aircraft, as well as for VIP and liaison transport including at one point even as "Air Force One," serving the President of the United States.

The military designations of C-6 "Ute" and U-21 "Ute". U-21 Ute is the more common version and is still employed with the US Navy, although the US Army has retired the bulk of its U-21s. It is upon these King Airs that TF Hawk bases its modernization program to produce the King Air Hawk.

TF Hawk has the ability to acquire, upgrade and enhance the former US Army fleet aircraft in the U-21 series. Our program involves adding a broad range of approved modifications, including mounting the much more powerful -41 engines to the wing and upgrading the cockpit with modern avionics.

TF Hawk can offer two potential variations of the U-21 platform:
  • Allied-Signal TPE 331-10 engines with two, new ultra-quiet McCauley five-bladed propellers, offering 1,000 shp, flat-rated to 715 shp for take-off.

  • PT-6A-41 engines, with standard three-bladed propellers (850 shp each).
In addition, all new avionics, a standard Garmin GNS-530A GPS Moving Map (and NAV/COM/ILS) is equipped on all of our aircraft, as well as UHF and VHF radios, providing the full spectrum of communications options for military applications.

In addition, TF Hawk adds modern avionics and, on request, additional lightweight PolyArmor.

Through incorporating new generation, modern turbojet engines, TF Hawk's conversion gives the plane much greater range, increased endurance and significantly more loiter time as well as the performance required to operate on even the hottest days in desert environments around the world.

  • Day/Night Area Surveillance

  • Utility Cargo Transportation

  • VIP/Executive Transportation

  • Squad-Level Personnel Transportation

  • Combined Passenger and Cargo Missions

  • Maritime Surveillance

  • Border Patrol

  • Electronic Intelligence (SIGINT or COMINT)

  • Medical Evacuation Missions

  • Command and Control Missions


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