# Special Conditions; Cirrus Design Corporation SR22; Protection of Systems for High Intensity Radiated Fields (HIRF)
> **Rule** · Amended final special conditions; request for comments. · Published 2006-07-20 · Effective 2006-07-11 · 71 FR 41099
## Document
- **Document number:** E6-11483
- **Category:** other
- **Type:** Rule
- **Action:** Amended final special conditions; request for comments.
- **Citation:** 71 FR 41099
- **Publication date:** 2006-07-20
- **Effective date:** 2006-07-11
- **FAA docket:** Docket No. CE194, Special Condition 23-134A-SC
## Abstract

These amended special conditions are issued to Cirrus Design Corporation, 4515 Taylor Circle, Duluth, Minnesota 55811, for a Type Design Change. This special condition amends special condition 23-134- SC, which was published February 4, 2003 (68FR 5538), for installation of an Electronic Flight Instrument System (EFIS) manufactured by Avidyne Corporation on the SR22. This amendment covers additional electronic equipment, such as a digital autopilot and/or engine related systems designed to perform critical functions on the SR22 and other models listed on the same Type Data Sheet, A00009CH. The airplanes will have novel and unusual design features when compared to the state of technology envisaged in the applicable airworthiness standards. The applicable regulations do not contain adequate or appropriate airworthiness 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 the airworthiness standards applicable to these airplanes.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2006/07/20/E6-11483/special-conditions-cirrus-design-corporation-sr22-protection-of-systems-for-high-intensity-radiated)
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