New Safety Inspections Scheduled for Boeing 737s
Monday, April 26th, 2010On April 26, 2010, Federal Aviation Administration (FAA) safety regulators ordered speedy inspections to prevent potentially dangerous vibrations affecting certain flight-control surfaces on the tails of some of the latest Boeing 737 models, according to a Wall Street Journal article.
The safety directive scheduled to be issued by the Federal Aviation Administration requires inspections of mechanisms that help control part of the elevators on about 125 U.S. registered Boeing 737s. Elevators are movable panels located on the horizontal tails of aircraft, which help control a plane’s up and down pitch.
Reflecting the level of concern by the FAA and manufacturer Boeing Co., some of the inspections must be completed within six days. Based on various factors including the age of the plane, other inspections must be finished between 12 and 30 days The decision to enhance and expand inspections comes after an initial round of federally-mandated emergency checks in March proved inadequate, according to the FAA. Following the first round of inspections, one Boeing 737 suffered severe elevator vibrations and was forced to return to the airport from which it departed. The plane, which landed safely, had been inspected as required under the earlier safety directive. The FAA didn’t identify the airline.
The latest inspections are targeted partly at aircraft flying long-range routes over water, which makes such malfunctions particularly dangerous because planes can be cruising two hours or more from the nearest emergency landing strip.
Excessive vibration may cause “structural failure of the elevator or horizontal stabilizer” to which it is attached, and also “could result in loss of structural integrity and aircraft control,” according to the FAA directive posted on the Federal Register’s Web site.
