US regulator orders 9,300 Boeing 737 reviews for possible switch failures

By David Shepardson

WASHINGTON, Jul 15 (Reuters) – The United States Federal Aviation Administration (FAA) on Thursday issued a directive to operators of all Boeing Co 737 series aircraft to conduct inspections to address potential fuel switch failures. cabin altitude pressure.

The guideline requires operators to repeatedly test the switches and replace them if necessary. The provision covers 2,502 aircraft registered in the United States and 9,315 aircraft worldwide.

The measure was requested after an operator reported in September that both pressure switches failed the functional test on the wing on three different 737 models.

The FAA said the failure of the switches could cause the cabin altitude warning system to not activate if the cabin altitude exceeds 10,000 feet (3,050 meters), at which point oxygen levels could turn dangerously low.

(Reporting by David Shepardson. Edited in Spanish by Rodrigo Charme)

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