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

AmSafe, Incorporated; Diamond Aircraft Industries, Incorporated, Model DA40 and DA42; Inflatable Three-Point Restraint Safety Belt With an Integrated Airbag Device

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 5, 2006 for Diamond Aircraft INC.. System: cabin, seats and restraints.

What it applies to

Applicant
Diamond Aircraft INC.
Makes
Diamond
Models
—
Published
September 5, 2006
Effective
August 28, 2006
The FAA's document
On the FAA's site

The FAA's summary their words, unchanged

These special conditions are issued for the installation of an AmSafe, Inc., Inflatable Three-Point Restraint Safety Belt with an Integrated Airbag Device on Diamond models DA40 and DA42. These airplanes, as modified by the installation of this Inflatable Safety Belt, will have novel and unusual design features associated with the upper-torso restraint portions of the three-point safety belt, which contains an integrated airbag device. 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.