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

Special Conditions; Bell Helicopter Textron Model 412. Search and Rescue (SAR) Helicopter, Integrated Flight Display System

Special conditions are rules the FAA writes for one design when the standard certification rules do not cover something new about it. These were for Bell. System: instruments and avionics.

What it applies to

Applicant
Bell
Makes
Bell Helicopter Textron
Models
—
Effective
March 26, 1992
The FAA's document
On the FAA's site

The FAA's summary their words, unchanged

This special condition is issued for the Bell Helicopter Textron Model 412 SAR helicopter. This helicopter will have a novel or unusual design feature associated with the Integrated Flight Display System. This special condition contains additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that provided by the applicable airworthiness standards.

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