Boeing 737 MAX planes at Urumqi Airport in China.
Boeing announced Friday that it had asked 16 companies operating 737 MAX, whose return in flight was authorized after 22 months of immobilization following two accidents, to solve a "potential electrical problem" before remaking their devices.
"The recommendation is made to allow verification of the existence of a sufficient earth connection for a component of the electrical supply system", explains the American aircraft manufacturer in a press release.
The 737 MAX plunged the aircraft manufacturer into a deep crisis
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.
Boeing indicates that it is warning its customers of the precisely affected planes.
"We will provide them with instructions on the appropriate corrective measures," he adds, without mentioning a deadline.
He also says he is working "closely" with the US air force, the FAA, on the problem.
The 737 MAX plunged the aircraft manufacturer into a deep crisis.
The plane was banned from flying in March 2019 after two accidents that left 346 dead, 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, then in most parts of the world, after modifications to this software, repositioning of some cables and re-training of the pilots.
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