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

Special Conditions: The Boeing Company Model 777-9 Airplane; Electronic Flight-Control System and Control-Surface-Position Awareness

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 August 5, 2019 for Boeing, covering the 777-9. System: other and general.

What it applies to

Applicant
Boeing
Makes
Boeing
Models
777-9
On this site
Boeing 777 358 registered
Published
August 5, 2019
Effective
September 4, 2019
The FAA's document
On the FAA's site

The FAA's summary their words, unchanged

These special conditions are issued for The Boeing Company (Boeing) Model 777-9 airplane. This airplane will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport-category airplanes. This design feature is an electronic flight-control system requiring control-surface-position awareness. 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.