SC 25-505-SC
Current · Effective 11/26/2013 · FR pub 11/26/2013 · FAA DRS
Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Aircraft Electronic System Security Protection From Unauthorized External Access. PDF on drs.faa.gov ↗
The PDF on drs.faa.gov is the authoritative document.