Boeing is under scrutiny due to quality issues in its 737 aircraft and faces potential delivery delays. A worker at Spirit AeroSystems discovered two fuselage holes not drilled as per requirements. Meanwhile, Boeing is also facing an impending strike from the International Association of Machinists and Aerospace Workers (IAM), demanding a 40% pay rise. The manufacturer believes there's a path to a new contract, but the IAM is angered by a 2014 deal. Amidst this, Boeing announced the inspection of around 50 undelivered 737 Max planes over drilling concerns.