MAX 10 Held Up Over Crew Alerting System

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Key Takeaways:

  • A prominent lawmaker is urging a delay in the certification of the Boeing 737 MAX 10 until its outdated 1960s-era crew alerting system is updated to meet current safety standards.
  • The current 737 system, unlike modern airliners, provides only a general master caution warning, requiring pilots to manually identify the specific malfunction, and does not comply with regulations enacted two years ago.
  • While Boeing estimates a $10 billion cost for a full upgrade, another lawmaker supports a less disruptive, "watered-down" version that could be retrofitted to existing MAX models, pending FAA approval.
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The Seattle Times is reporting a prominent lawmaker wants the certification of the latest models of the Boeing 737 MAX delayed until Boeing can bring the crew alerting system up to current standards. The 737 is the only Boeing product that has a decentralized malfunction warning system designed in the 1960s and it doesn’t meet certification requirements enacted two years ago. The system alerts pilots to a problem by activating a master caution warning. Pilots then have to hunt through various switch panels to figure out why the caution light came on. For more than 40 years, other airliners have used a system that uses a text message on a cockpit screen to tell pilots precisely what is wrong. The MAX 8 and 9 versions use the old system thanks to an exemption. If the 10 has a new setup then separate training will be required. Boeing says the upgrade could cost as much as $10 billion.

Rep. Peter DeFazio, D-Ore., chairman of the House Transportation Committee, says the MAX 10 should have the new system. “The FAA should side with safety and establish a high bar for the certification of the 737 MAX-10,” he said in a statement issued last week. Meanwhile, the Senate Commerce Committee, chaired by Sen. Maria Cantwell, D-Wash., has sent a proposal for a watered-down version of the up-to-date system, which its authors say could be employed on the 10 and be retrofitted on the models already flying, to the FAA and NTSB for review. They say it will cost less and create less disruption. The Times says Cantwell has said she will support the revised system if the FAA approves it.

Russ Niles

Russ Niles is Editor-in-Chief of AVweb. He has been a pilot for 30 years and joined AVweb 22 years ago. He and his wife Marni live in southern British Columbia where they also operate a small winery.
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