Squawk Box

June 2011 Issue

Chafed, Corroded, Failed

The following information is derived from the FAA’s Service Difficulty Reports and Aviation Maintenance Alerts.

Out of concerns about chafing or corrosion, a technician was motivated to closely inspect the right fuel-flow pressure gauge line where it crosses the defrost duct. He was right, finding extensive corrosion at the point of contact. After the line was removed, slight bending pressure cracked the area wide open and it was seen that the corrosion had actually penetrated to the inside of the line, yet the line was not leaking. If a leak started, the only way to stop it would be to shut down the right engine.

To continue reading this entire article you must be a paid subscriber.

Subscribe to Aviation Safety

The monthly journal of risk management and accident prevention, is packed with useful, timely information on basic and advanced technique, accident analysis and, most important, practical articles on how you can develop the judgment that will keep you in the air and out of the NTSB's files.

Already subscribe but haven't registered for all the benefits of the website? Click here.

Subscriber Log In

Forgot your password? Click Here.