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

Special Conditions: Spectrum Aeronautical, LLC Model Freedom S-40 Airplane \nSpecial Conditions for Flight Performance, Flight Characteristics, and \nOperating Limitations

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 April 14, 2009 for Spectrum Aeronautical, LLC. System: engine.

What it applies to

Applicant
Spectrum Aeronautical, LLC
Makes
Spectrum Aeronautical, LLC
Models
—
Published
April 14, 2009
Effective
April 1, 2009
The FAA's document
On the FAA's site

The FAA's summary their words, unchanged

These special conditions are issued for the Spectrum Aeronautical, LLC Model Freedom S-40 airplane. This airplane will have a novel or unusual design feature(s) associated with engine location, certain performance, flight characteristics and operating limitations necessary for this type of airplane. 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.