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- Certification of aircraft (en)
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- Executive-summary – Special Committee to Review the FAA's Aircraft Certification Process (en)
- Official report – Special Committee to Review the FAA's Aircraft Certification Process (en)
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- Talk:Boeing 737 MAX certification#Proposed split of contents to Return to service of the Boeing 737 MAX (en)
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- Executive-summary - Special Committee to Review the FAA’s Aircraft Certification Process 01.svg (en)
- Official report - Special Committee to Review the FAA’s Aircraft Certification Process 02.svg (en)
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- Return to service of the Boeing 737 MAX (en)
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- To address the unsafe conditions that led to the grounding of the Boeing 737 MAX, the FAA issued an Airworthiness Directive that requires four design changes:
# Installing new flight control computer software. This change is intended to prevent erroneous MCAS activation, among other safeguards.
# Installing updated cockpit display system software to generate an AOA disagree alert. This will alert the pilots that the airplane's two AOA sensors are disagreeing by a certain amount indicating a potential AOA sensor failure.
# Incorporating new and revised operating procedures into the Airplane Flight Manual. This change is intended to ensure the flight crew has the means to recognize and respond to erroneous stabilizer movement and the effects of a potential AOA sensor failure.
# Changing the routing of horizontal stabilizer trim wires. This is intended to bring the airplane into full compliance with the FAA's wire-separation safety standards.
In addition to these four design changes, the FAA also will require operators to conduct an AOA sensor system test and perform an operational readiness flight prior to returning each airplane to service. (en)
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- Airworthiness Directive Summary (en)
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- Boeing 737 MAX certification (en)
- Return to service of the Boeing 737 MAX (en)
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