To comply with these actions, the US authority estimates that 68 airplanes will need to have multiple flight deck panels modified. The FAA says that 71 737-8 and 737-9 planes with US registration are affected by this AD, but sources have said to Reuters that it actually impacts more than 300 planes in Boeing’s inventory. In order to address this issue, the AD requires modifying the electrical bonding of certain support panel assemblies these panels are installed to provide sufficient electrical grounding for the equipment in the flight deck.īoeing is currently developing service information for a modification that will address this unsafe condition. During testing the electrical power systems did not perform as expected this behaviour was also observed in two other places, including the mounting tray for the standby power control unit (SPCU), which is located behind the first officer, and the main instrument panel (MIP) assembly, which is located in front of and between the captain and first officer.įAA Concerned About Boeing 737 MAX Electrical Grounding Issue Required Actions The FAA has explained that this issue was discovered during testing of a newly manufactured Boeing Model 737-8 airplane. “We continue to work closely with the FAA and our customers to address the ground path issue in affected 737s.” a Boeing spokeswoman said to Reuters Degradation of bonds essential for the electrical grounding of equipment could affect the operation of certain systems, including engine ice protection. The design changes resulted in poor bonding of the panel assemblies, consequently leading to insufficient electrical grounding in the installed equipment. The FAA was advised by the manufacturer “that its design changes to the referenced panel assemblies had created an urgent safety issue”.Īccording to the FAA, this new AD was prompted by manufacturing design changes to certain metallic support panel assemblies installed in the flight deck. Electrical Grounding IssueĪt the beginning of April airlines pulled dozens of 737 MAX aircraft from service this was after Boeing warned of a production-related electrical grounding problem in a backup power control unit, situated in the cockpit on some recently built airplanes. The rule meets a requirement of the 2018 FAA Reauthorization Act.The Federal Aviation Administration (FAA) has issued two new airworthiness directives (AD) regarding the Boeing 737 MAX, one for an electrical grounding issue and one for LEAP-1B engine corrosion reports. In 2022, the FAA proposed the rule after seeking recommendations from aircraft manufacturers and labour partners. The Biden-Harris Administration made this rule a priority in 2021. “ No pilot should have to worry about an intrusion on the flight deck,” said Acting FAA Associate Administrator for Safety David Boulter. Transportation Secretary Pete Buttigieg.Īircraft manufacturers are required to install secondary barriers on commercial aircraft produced after the rule goes into effect. “E very day, pilots and flight crews transport millions of Americans safely – and today we are taking another important step to make sure they have the physical protections they deserve,” said U.S. The final rule mandating the additional barrier will protect flight decks from intrusion when the flight deck door is open. The Federal Aviation Administration (FAA) will require a secondary barrier on the flight deck of new commercial aeroplanes to ensure the safety of aircraft, flight crew and air passengers.
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