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

Special Conditions for Marsh Aviation Company Grumman American Model G-164A 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 Marsh Aviation. System: other and general.

What it applies to

Applicant
Marsh Aviation
Makes
Grumman
Models
—
Effective
October 31, 1978
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.