Special Conditions: Learjet 25, 25A, 25B, 25C, 25D, and 25F Airplanes; 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 December 5, 2006 for Envoy Aerospace LLC, covering the 25A, 25, 25B, 25C. System: instruments and avionics.
What it applies to
- Applicant
- Envoy Aerospace LLC
- Makes
- Learjet Inc.
- Models
- 25A, 25, 25B, 25C, 25D, 25F
- On this site
- Learjet 25 23 registered
- Published
- December 5, 2006
- Effective
- January 4, 2007
- The FAA's document
- On the FAA's site
The FAA's summary their words, unchanged
The FAA issues these special conditions for Learjet 25, 25A, 25B, 25C, 25D, and 25F airplanes modified by Envoy Aerospace, LLC. These modified airplanes will have novel or unusual design features when compared with the state of technology envisioned in the airworthiness standards for transport category airplanes. The modification consists of installing Universal Avionics EFI-890 Electronic Flight Displays and Rockwell Collins AHS-1000A Attitude Heading Reference Systems. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for protecting these systems from 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.