(NYSE: BA) has spent the better part of the last year trying to rebuild its reputation after a series of engineering mishaps. In January, that challenge became a lot more difficult after the company's 737 MAX was involved in yet another issue.

An Alaska Air Group 737 MAX lost cabin pressure at 16,000 feet after a door plug released. The incident caused part of the global MAX fleet to be grounded.

Beleaguered investors headed for the emergency exits, sending Boeing shares down 19% for the month, according to data provided by S&P Global Market Intelligence.

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Source Fool.com