Special Conditions; Modified Boeing Model 727-100 Series Airplane; Lightning and 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 November 29, 1990 for Dee Howard Company. System: instruments and avionics.
What it applies to
- Applicant
- Dee Howard Company
- Makes
- Boeing
- Models
- —
- Published
- November 29, 1990
- Effective
- November 19, 1990
- The FAA's document
- On the FAA's site
The FAA's summary their words, unchanged
These special conditions are Issued for the Boeing Model 727-100 series airplane modified by The Dee Howard Company in San Antonio, Texas. This airplane is equipped with high-technology digital avionics systems which perform critical or essential functions. The applicable regulations do not contain adequate or appropriate safety standards for the protection of these systems from the effects of lightning and high-intensity radiated fields (HIRF). These special conditions provide the additional safety standards which the Administrator considers necessary to ensure that the critical and essential functions performed by these systems are maintained when the airplane is, exposed to lightning and HIRF.
Source: FAA special conditions (final) from the Dynamic Regulatory System; the Federal Register carries the same notices.