The U.S. Department of Transportation will review whether security and hiring standards are stringent enough to prevent similar tragedy of the Germanwings plane crash that killed 150 people.
A pilot who suffered from severe depression is believed to have locked the cockpit and deliberately steered the aircraft into the French Alps causing the crash.
The audit was requested by Sen. Dianne Feinstein, a Democrat representing California, the department said in a letter to the Federal Aviation Administration.
The audit will also examine "what steps FAA takes to evaluate the psychological health of pilots," according to the letter.
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