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DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14CFR Part 39

~ IDocket No. FAA-2007-2834aj Directorate Identifier 2007-NM-060-ADj



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- RIN 2120-AA64 Airworthiness Directives; Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes AGENCY: Federal Aviation Administration (FAA), Department ofTransportation (DOT). ACTION: Final rule. SUMMARY: The FAA is adopting anew airworthiness directive (AD) for certain Boeing Model 737-600, -700, -70De, -800 and -900 series airplanes. This AD requires sealing the fasteners on the front and rear spars inside the main fuel tank and on the low panel ofthe center fuel tank, inspecting the wire bundle support installation inthe equipment cooling system bays to identify the type ofclamp installed and determine whether{~ Tenon sleeve is installed, and doing related corrective actions ifnecessary. It-l:?J-iD ROlfrlNG SYMBOl 

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# C~ ATE This AD results from adesign review ofthe fuel tank systems. We arc issuing this AD t 

# ~»/it) prevent arcing atcertain fuel tank fasteners inthe event ofa lightning strike or fault current event, which, incombination with Oammable fuel vapors, could result in a fuel tank explosion and consequent loss ofthe airplane. DATES: This AD becomes effective [INSERT DATE 35 DAYS AFTER DATE OF PUBLICATION INTHE FEDERAL REGISTER]. The Director ofthe Federal Register approved the incorporation by reference of certain publication listed inthe AD as of [INSERT DATE 35 DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER]. OUTING sY"'SOl



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DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14CFR Part 39 IDocket No. FAA-2007-28345; Directorate Identifier 2007-NM-060-AD; Amendment 39-**; AD **] NlTlALSlS1G



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llo~ ATE ' • Mk( .)_ C.-I 0 AGENCY: Federal Aviation Administration (FAA), Department ofTransportation (DOT). ACTION: Final rule. SUMMARY: The FAA is adopting anew airworthiness directive (AD) forcertain 

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# ;(, equipment cooling system bays to identify the type ofclamp installed and determine whether4€ Teflon sleeve is installed, and doing related corrective actions ifnecessary. scaling the fasteners on the front and rear spars inside the main fuel tank and on the low ATE panel ofthe center fuel tank, inspecting the wire 'bundle support installation intbe

This AD resutts [rom adesign revie\v ofthe fuel t!IDk systems. We arc issuing this AD t prevent arcing atcertain fuel tank fasteners inthe event ofa lightning strike or fault current event, which, incombination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss ofthe airplane. DATES: This AD becomes effective [INSERT DATE 35 DAYS AFTER DATE OF PUBLICATION TN THE FEDERAL REGISTER]. NI11AlSIS1G The Director ofthe Federal Register approved the incorporation by reference of 

## '" certain publication listed inthe AD as of [INSERT DATE 35 DAYS AFTER DATE OF OVTItIG StMBOl PUBLICATION INTHE FEDERAL REGISTER].
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