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

Special Conditions: CenTex Aerospace, Inc.; Beech Model A36 airplane, Installation of Full Authority Digital Engine Control (FADEC) System and the Protection of the System from the Effects of High Intensity Radiated Fields (HIRF)

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 September 26, 2002 for Centex Aerospace. System: engine.

What it applies to

Applicant
Centex Aerospace
Makes
Raytheon
Models
—
Published
September 26, 2002
Effective
September 17, 2002
The FAA's document
On the FAA's site

The FAA's summary their words, unchanged

These special conditions are issued to CenTex Aerospace, Inc.; 7805 Karl May Drive; Waco, Texas 76708 for the Beech Model A36 airplane. This airplane will have a novel or unusual design feature(s) associated with the installation of an engine that uses an electronic engine control system in place of the engine's mechanical system. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

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