FAA Phase 4A Clears Boeing 777‑19 for Extended Testing, Turns 2027 EIS into a Scheduling Race
FAA Phase 4A approval authorises Boeing's 777‑19 to begin intensive 'for‑score' ground and flight testing, shifting the programme's 2027 entry‑into‑service from a technical unknown to a scheduling race. The move reduces technical uncertainty but puts pressure on test throughput, supplier readiness and delivery sequencing ahead of 2027.