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Mon, Apr 25, 2011

AD: Boeing

AD NUMBER: 2011-09-05

MANUFACTURER: The Boeing Company Model 777-200, -300, and -300ER Series Airplanes
SUBJECT: Airworthiness Directive 2011-09-05

SUMMARY: This AD requires installing an auto shutoff feature for the center override/jettison fuel pumps, and installing power control circuitry for the center override/jettison and main jettison fuel pumps. This AD also requires installing new software in the electrical load management system (ELMS) electronics units in certain power management panels; installing airplane information management system 2 (AIMS-2) software in the AIMS-2 hardware; and making certain wiring changes. This AD was prompted by results from fuel system reviews conducted by the manufacturer. The FAA is issuing this AD to prevent potential ignition sources inside fuel tanks, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.

FMI: http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/5108698741F40AC8862578790051C933?OpenDocument

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