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

Special Conditions: Boeing Model 767-300 Series Airplanes; Seats with Inflatable Lapbelts

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 22, 1999 for Am-Safe INC.. System: cabin, seats and restraints.

What it applies to

Applicant
Am-Safe INC.
Makes
Boeing
Models
—
Published
September 22, 1999
Effective
October 24, 1999
The FAA's document
On the FAA's site

The FAA's summary their words, unchanged

These special conditions are issued for Boeing Model 767-300 series airplanes. These airplanes as modified by Am-Safe, Inc. will have novel and unusual design features associated with seats with inflatable lapbelts. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

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