Squawk Box

January 2002 Issue

Dr. Leaky Lines

Lines to oil and fuel gauges can spell trouble if not maintained

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


The FAA is looking into a number of reports and safety recommendations that have arisen as a result of lines behind the instrument panel leaking flammable fluid. The problems are encountered in a variety of models, from old models of aircraft currently in production to out-of-production vintage models to current production models.

Part 23 certification rules require a means to minimize the ignition and resultant hazard of ignition associated with the installation of flammable fluid systems. However, many older models do not have to comply with current Part 23 rules....

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