Special Conditions: The Boeing Company, Boeing Model 747-8 Series Airplane; Short-Term Occupancy of Lower Lobe During Flight and Installation of Stairway Between Main Deck and Lower-Lobe

What is a Special Condition?

When an aircraft design includes a novel feature not addressed by the existing 14 CFR airworthiness standards, the FAA imposes Special Conditions — additional requirements specific to that design. They're project-specific, not type-applicable.