McDonnell Douglas DC-9 Airplanes; Lightning and High Intensity Radiated Fields
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 September 23, 1991 for Abx Air INC.. System: instruments and avionics.
What it applies to
- Applicant
- Abx Air INC.
- Makes
- McDonnell Douglas
- Models
- —
- Published
- September 23, 1991
- Effective
- September 11, 1991
- The FAA's document
- On the FAA's site
The FAA's summary their words, unchanged
These special conditions are issued to ABX Air. Inc. for modification of certain McDonnell Douglas DC-9 airplanes. These airplanes are equipped with high-technology digital avionics systems that perform critical and 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 contain the additional safety standards that the Administrator considers necessary to ensure that the critical and essential functions that these systems perform 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.