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Special conditions

Special Conditions; Learjet 35A (C-21A), Lightning and Radio Frequency (RF) Energy Protection

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 May 17, 1989 for Learjet. System: engine.

What it applies to

Applicant
Learjet
Makes
Learjet
Models
—
Published
May 17, 1989
Effective
May 2, 1989
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 35A (C-21A) airplane. This airplane will have novel or unusual design features associated with engine electronic controllers. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for the protection from the effects of lightning and the susceptibility to external radio frequency (RF) energy sources. These special conditions contain safety standards which the Administrator finds necessary to ensure that critical and essential functions of systems in the Learjet 35A (C-21A) are maintained.

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