AD NUMBER: 2008-12-10
SUBJECT: Airworthiness Directive 2008-12-10 SUMMARY: We are adopting a
new airworthiness directive (AD) for the products listed above.
This AD results from mandatory continuing airworthiness
information (MCAI) originated by an aviation authority of another
country to identify and correct an unsafe condition on an aviation
The MCAI describes the unsafe condition as: This assessment
showed that the electrical harness of the Fuel Quantity Gauging
System (FQGS) is installed in the same routing as the 28 Volts AC,
28 Volts DC, and 115 Volts AC electrical harnesses.
A chafing condition between these electrical harnesses and the
FQGS harness could increase the surface temperatures of fuel
quantity probes and high level sensors inside the fuel tank,
resulting in potential ignition source[s] and consequent fuel tank