Two poorly drilled holes will delay some Boeing 737 Max aircraft deliveries. Boeing has been in crisis mode since a panel covering a gap that in other configurations is used as an emergency door detached from an Alaska Airlines plane in mid-flight.

The company is taking steps to strengthen quality in the 737 program, including additional inspections at its factory and at major suppliers and greater oversight by airlines. The 737 program continues to deliver aircraft and its production rate is now 38 per month, although it may be slowed in the short term.