The top US aviation regulator plans to test-fly Boeing’s grounded 737 Max on Wednesday in an attempt to show an antsy public that proposed fixes will be safe, according to a notification sent to Congress. Federal Aviation Administration chief Steve Dickson, who is licensed to fly the 737 along with several other jetliners from his time as a pilot at Delta Air Lines, will be at the controls of a Max that has been updated with a variety of fixes the agency has proposed and may soon make mandatory. The announcement of the flight comes after the FAA and the other three leading aviation regulators elsewhere in the world this week completed assessments of new pilot training requirements for the Max, the agency told lawmakers. The flight and the completion of training reviews are strong signals that the FAA is confident in Boeing’s best-selling plane and closing in on the final approvals needed before it can return to airline service after 18 months. Several critical hurdles remain, such as finalising the training requirements after giving the public a chance to provide input. The FAA’s Flight Standardisation Board plans to release the training proposal “in the near future”, the agency said in the notice seen by Bloomberg. Boeing's share price extended gains on the news, closing at $156.03 in New York on Friday, up 6.8 per cent. Prior to making the flight, Mr Dickson along with his top deputy, Daniel Elwell, will also complete a training course that Boeing and regulators have proposed for all Max pilots. The Max was grounded on March 13, 2019, after the second fatal crash involving an automated safety system that went haywire during malfunctions, repeatedly attempting to drive down the jets’ noses until pilots lost control. The crashes off the coast of Indonesia and in Ethiopia killed 346 people. The system, known as Manoeuvering Characteristics Augmentation System, has been altered to prevent repeated activations and to limit how sharply it can dive. The plane’s flight control computer has also been redesigned. Boeing has said it expects to get approval for the plane this autumn. It will still take weeks or months after the grounding order is lifted for flights to resume as airlines perform maintenance on a fleet that has sat on the ground and trains flight crews. Mr Dickson, who had been senior vice president for flight operations at Delta before retiring, announced a few weeks after taking the helm of the agency in August 2019 that he would fly the Max before the agency signed off on its return. Mr Elwell, the FAA’s deputy administrator, was also a pilot at American Airlines. A group known as the Joint Operations Evaluation Board – which is made up of representatives from the FAA, Transport Canada, the European Aviation Safety Agency and the National Civil Aviation Agency of Brazil – conducted multiple exercises in simulators to evaluate what training is needed for the plane. The group’s work went well, Patrick Ky, executive director of EASA, said on Friday in Europe.