Two U.S. pilots' unions say the potential risks of a safety feature on Boeing Co.'s 737 Max aircraft that has been linked to a deadly crash in Indonesia weren't sufficiently spelled out in their manuals or training.
Boeing and the Federal Aviation Administration issued directives last week telling flight crews about the system, which is designed to provide extra protection against pilots losing control. That prompted aviators, unions and training departments to realize that none of the documentation for the Max aircraft included an explanation of the system, the union leaders said.
"We don't like that we weren't notified," said Jon Weaks, president of the Southwest Airlines Pilots Association. Dennis Tajer, a 737 captain and spokesman for the Allied Pilots Association at American Airlines Group Inc., said his union's members were also concerned.
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