The U.S. aircraft register, updated daily
Special conditions

Special Conditions; McDonnell Douglas Model DC-9-80 Series Airplane

Special conditions are rules the FAA writes for one design when the standard certification rules do not cover something new about it. These were for Mcdonnell Douglas Corporation. System: other and general.

What it applies to

Applicant
Mcdonnell Douglas Corporation
Makes
McDonnell Douglas
Models
—
Effective
April 2, 1980
The FAA's document
On the FAA's site

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