September 16, 2021 7:47 pm

Boeing asks 16 737 MAX customers to correct “potential” electrical problem

The plane was banned from flying in March 2019 after two accidents that killed 346 people. By January, he had been re-authorized to fly in most parts of the world.

Boeing 737 Max planes on the tarmac at Urumqi Airport in China's Xinjiang region June 5, 2019 (GREG BAKER / AFP)

After twenty months of immobilization following two accidents, the Boeing’s 737 MAX were able to fly again. But on some planes, all the problems may not be solved: the American manufacturer announced on Friday April 9 that it had asked 16 companies operating these devices to resolve a “Potential electrical problem” before making them fly again.

“The recommendation is made to allow verification of the existence of a sufficient earth connection for a component of the power supply system”, explains the aircraft manufacturer in a press release. The number of affected devices or the identity of customers has not been specified.

Some 450 Boeing 737 MAX have been delivered to 49 airlines and lessors since this model entered service. However, in this press release, Boeing indicates that it is warning its customers about which planes were precisely concerned. “We will provide them with instructions on the appropriate corrective actions”, he adds, without mentioning a deadline. The builder also says it works “in close collaboration” with the US Air Force, the FAA, on the issue.

A defect in the flight control software that has already been corrected

The 737 MAX plunged the aircraft manufacturer into a deep crisis. The plane was banned from flying in March 2019 after two accidents that killed 346, Lion Air in Indonesia in October 2018 (189 dead) and Ethiopian Airlines in March 2019 in Ethiopia (157 dead).

The accidents highlighted a flaw in the MCAS flight control software. The device was cleared for flight again in November in the United States, and then in most parts of the world, after modifications to this software, repositioning of some cables and re-training of the pilots.