Special Conditions: Modified Learjet Model 55 Airplane; 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 April 24, 1991 for Duncan Aviation INC.. System: instruments and avionics.
What it applies to
- Applicant
- Duncan Aviation INC.
- Makes
- Learjet
- Models
- —
- Published
- April 24, 1991
- Effective
- April 16, 1991
- The FAA's document
- On the FAA's site
The FAA's summary their words, unchanged
These special conditions are issued for the Learjet Model 55 airplane modified by Duncan Aviation, Inc., in Lincoln, Nebraska. This airplane is equipped with high-technology digital. avionics systems 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 provide the additional safety standards which the Administrator considers necessary to ensure that the critical functions performed by this system are maintained when the airplane is exposed to HIRF.
Source: FAA special conditions (final) from the Dynamic Regulatory System; the Federal Register carries the same notices.