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Boeing said on Monday that he had not "intentionally disabled or otherwise" warned of disagreement on his 737 Max jets.
The statement follows reports that the planner failed to tell Southwest Airlines and the Federal Aviation Administration that the safety function had been disabled before the recent accidents.
Southwest said to be unaware of the deactivation of the disagreement alert, which warns pilots of the malfunction of the sensors, until after the plane crash in Indonesia, and that Boeing said in his manual that the fires of disagreement were functional.
"Boeing has included the Disagreement Alert as a standard feature of the Max, although this alert has not been considered a safety feature on aircraft and that it is not necessary for safe operation of the aircraft, "said the company. "Boeing did not intentionally deactivate or otherwise warn of disagreement over its Max airplanes."
The function is an alert that lights up in the cockpit if the attack angle sensors of an aircraft transmit incorrect data regarding the pitch of his nose. The attack angle indicator displays the readings of both sensors, and the detune indicator is activated if these sensors are not correctly aligned.
"The Disagreement Alert was supposed to be a standard standard feature of Max airplanes. However, the Disagreement Alert was not operational in all planes because the feature was not enabled." as expected, "said the company.
Boeing is working on an update of the aircraft's anti-stall software, dubbed MCAS, and plans to make the light standard of disagreement on all new 737 Max jet aircraft.
The MCAS software was involved in accidents in Ethiopia and Indonesia, which claimed the lives of 346 people. The grounding of jets since March has forced the major airlines to cancel thousands of flights during the summer.
The situation was an excess for Boeing's business and weighed on his stock. At the Boeing shareholders' meeting on Monday, President and CEO Dennis Muilenburg dismissed criticisms of how the company designed the Max flight control system, calling it "in-depth" and "disciplined".
"We have followed exactly the steps of our design and certification processes that systematically produce safe planes," he said at a press conference following the meeting.
Earlier, Boeing's shareholders had rejected a proposal to split the roles of chairman and chief executive officer. If passed, Muilenberg could have been stripped of one of his titles.
The Federal Aviation Administration has not received the Boeing hotfix, but said at a first review in April that its upgrade was "operationally appropriate".
On Monday, erroneous reports briefly circulated that Boeing had submitted the patch for review, but the FAA confirmed that this was not the case.
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