MCAS CONCEALMENT: In November 2016, Forkner discovered during simulator testing that MCAS was behaving far more aggressively than he had represented to the FAA. He messaged colleague Patrik Gustavsson: "So I basically lied to the regulators (unknowingly)." He did not formally update his prior representations to the FAA about MCAS authority limits.

FAA COMMUNICATION: Forkner was Boeing's primary point of contact with the FAA for 737 MAX pilot training requirements. He successfully argued that MCAS was a minor enough modification that pilots would not need new simulator training, saving airlines millions but leaving pilots unaware of the system that could override their control inputs.

TRAINING MANUAL OMISSION: Under Forkner's oversight, MCAS was removed from the 737 MAX flight crew operations manual and pilot training materials. Pilots worldwide flew the aircraft without knowing MCAS existed until after Lion Air Flight 610 crashed, killing 189 people.

ONLY INDIVIDUAL CHARGED: Despite the systemic nature of the fraud, Forkner was the sole person indicted in connection with 346 deaths across two crashes. His defense argued he was a scapegoat for institutional failures by both Boeing management and the FAA. The jury agreed.

INTERNAL MESSAGES: Beyond the "lied to the regulators" message, other internal Boeing communications showed Forkner and colleagues joking about the aircraft's handling: "MCAS is now active down to M .2" and discussing how to minimize pilot training to save airlines money.