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

Special Conditions: Airbus Model A330, A340-200 and A340-300 Series Airplanes; Lower Deck Mobile Crew Rest (LD-MCR) Compartment

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 January 5, 2005 for Airbus. System: other and general.

What it applies to

Applicant
Airbus
Makes
Airbus
Models
—
Published
January 5, 2005
Effective
December 22, 2004
The FAA's document
On the FAA's site

The FAA's summary their words, unchanged

These special conditions are issued for the Airbus Model A330, A340-200, and A340-300 series airplanes. These airplanes will have novel or unusual design features associated with a lower deck mobile crew rest (LD-MCR) compartment. 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.