Boeing still working on fix for 106 737 MAX planes on the ground: FAA by Reuters

© Reuters. FILE PHOTO: A Boeing 737 MAX 8 sits outside the hangar during a media tour of the Boeing 737 MAX at the Boeing plant in Renton, Washington

By David Shepardson

WASHINGTON (Reuters) – The Federal Aviation Administration (FAA) said Thursday that 106 Boeing (NYSE 🙂 737 MAX planes around the world were grounded by an electrical problem and the U.S. planner was still working on a fix.

Boeing revealed a problem with the power supply system on April 7 and recommended that operators temporarily remove these planes from service.

The problem was with the electrical ground – or connections designed to maintain safety in the event of a surge – inside a backup power control system. The FAA said Thursday that “subsequent analysis and testing showed the problem could involve additional systems.”

The FAA said in a notice to international air regulators that 106 planes are covered by the advisory, including 71 registered in the United States. “All of these planes remain on the ground while Boeing continues to develop a proposed fix. The FAA is in contact with the airlines and the manufacturer,” the agency added.

The FAA said Boeing’s investigation showed the issue could impact the emergency power control unit, a circuit breaker panel and the main instrument panel.

The advisory stated that “the FAA expects to issue an airworthiness directive requiring corrective action before continuing flight for all affected aircraft.”

Boeing did not immediately comment.

The three main US operators of the 737 MAX – Southwest Airlines (NYSE :), American Airlines (NASDAQ 🙂 and United Airlines – have decommissioned more than 60 planes following Boeing’s advice.

The FAA said other carriers affected include Cayman Airways, Copa Airlines, GOL Linhas Aereas, Iceland Air, Minsheng Leasing, Neos Air, Shanding Airlines, SilkAir, Spice Jet, Sunwing Airlines, TUI, Turkish Airlines, Valla Jets Limited, WestJet Airlines and Xiamen. Airlines companies.

The FAA said it had “verified that all operators with affected aircraft have voluntarily taken these aircraft out of service.”

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