The U.S. aircraft register, updated daily
Special conditions

Special Conditions: ST 2017RC-R, Installation of Pratt & Whitney Canada PT6-67D on Global Helicopter Technology, Inc. (GHTI), Restricted Category Model UH-1H, TC R00002RC, With Full Authority Digital Engine Control (FADEC)

Special conditions are rules the FAA writes for one design when the standard certification rules do not cover something new about it. These were published January 15, 2003 for Global Helicopter Technology. System: engine.

What it applies to

Applicant
Global Helicopter Technology
Makes
Pratt & Whitney
Models
—
Published
January 15, 2003
Effective
January 7, 2003
The FAA's document
On the FAA's site

The FAA's summary their words, unchanged

This special condition is issued for Supplemental Type Certificate (STC), Project ST2017RC-R, the installation of a Pratt and Whitney PT6-67D Turbine Engine on Global Helicopter Technology Inc. (GHTI), Restricted Category, U.S. Army military surplus helicopter, Model UH-1H, type certificated under TC R00002RC. The installation of the PT6-67D on the Restricted Category UH-1H will have a novel or unusual design feature associated with the installation of the Full Authority Digital Engine Control (FADEC). The applicable airworthiness regulations do not contain adequate or appropriate safety standards to protect systems that perform critical functions from the effects of a high-intensity radiated field (HIRF). This special condition contains the additional safety standards that the Administrator considers necessary to ensure that critical functions of systems will be maintained when exposed to HIRF.

Source: FAA special conditions (final) from the Dynamic Regulatory System; the Federal Register carries the same notices.