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Special conditions · aircraft

Special Conditions: Learjet Model 35, 35A, 36, and 36A Series 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 July 5, 2004 for Flight Test Associates Incorporated, covering the 35, 35A (C-21A), 36, 36A. System: instruments and avionics.

What it applies to

Applicant
Flight Test Associates Incorporated
Makes
Learjet Inc.
Models
35, 35A (C-21A), 36, 36A
On this site
Learjet 35 161 registered
Published
July 5, 2004
Effective
June 2, 2004
The FAA's document
On the FAA's site

The FAA's summary their words, unchanged

These special conditions are issued for Learjet Model 35, 35A, 36, and 36A series airplanes modified by Flight Test Associates. These modified airplanes will have novel and unusual design features when compared to the state of technology envisioned in the airworthiness standards for transport category airplanes. The modification incorporates installation of a Honeywell Model BA-250 altimeter indicator and a Model AM-250 barometric altimeter. The applicable airworthiness 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 provided by the existing airworthiness standards.

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