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Special conditions

Special Conditions: Cessna Model 500, 550, and S550 Airplanes; High-Intensity Radiated Fields

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 July 2, 1996 for Columbia Avionics. System: instruments and avionics.

What it applies to

Applicant
Columbia Avionics
Makes
Cessna
Models
—
Published
July 2, 1996
Effective
June 19, 1996
The FAA's document
On the FAA's site

The FAA's summary their words, unchanged

These special conditions are issued for the Cessna Model 500, 550, and S550 airplanes. These airplanes, as modified by Columbia Avionics, Inc., utilize new avionics/electronic systems, such as an electronic flight information system (EFIS), which perform critical functions. The applicable regulations do not contain adequate or appropriate safety standards for the protection of these systems from the effects of high-intensity radiated fields (HIRF). 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.