But government inaction may have been at least partially to blame for the crash of an Ethiopian Airlines 737 MAX on March 10—the US government shutdown reportedly pushed back a fix to the aircraft's software for more than a month.
On March 11, Boeing announced that the company "has been developing a flight control software enhancement for the 737 MAX, designed to make an already safe aircraft even safer." The shutdown of non-essential operations at the FAA caused work on the fix to be suspended for five weeks, according to unnamed US officials cited by the Wall Street Journal. The fix is expected to be mandated for installation by the FAA by the end of April.
The update seeks to correct what may have been the root cause of the crash of Lion Air Flight 610 in Indonesia last October—the Maneuvering Characteristics Augmentation System's (MCAS') reliance on a single sensor to determine whether the aircraft is entering a stall. But according to a WSJ report, that fix was delayed because the FAA shutdown interrupted the approval process.