14910-13-Uj

DEPARTMENT OF TRANSPORT AnON

Federal Aviation Administration

'14CFR Part39 \'tG7

IDocket No. FAA-2009-++j++; Directorate Identifier 2009-NM-080-AD]

RIN 2120-AA64

Senes Airplanes

AGENCY: Federal Aviation Administration (FAA), Department or Transportation

(DOT).

ACTION: Notice of proposed ru!cmaking (NPR1v1).

SUMMARY: The FAA proposes to supersede an existing airworthiness directive (AD

that applies to all Boeing Model 737-600, -700, -700e, -800, -900, and -900ER series

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airplanes. The e-xisting AD cun'cntly requires repetitive detailed inspections of the slat

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track downstop assemblies to verify that proper hardware is Il1stalled, one-time torquin~

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orthe nul and bolt, and con-ective actions if necessary_ This proposed AD would also

require replacing the hardware of the down stop assembly with new hardware of the

down stop assembly, doing a detailed inspection or a borcscope inspection of tile slat

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cans on each wing and the lower rail ortlle slat main tracks for debris, replacing the bol s

"ATE oftlle aft side guide with new bolts, and removing any debris found in the slat can_ Thi

proposed AD also would remove airplanes ham the applicability_ This proposed .W

results from reports of parts coming off the main slat track downstop assemblies. We a '6,nl'.',">iJ';

proposing this AD 10 prevent loose or missing pmis from the main slat track dowllstop 'M'"

assembhes from falling into the slat can and causing a puncture, which could result in a ""Lrn~(;>,",lIJ()L

fuel leak and consequent fire. I.,m,\,s:""

DATES: We must receive cOl11ments all this proposed AD by [mseli date 45 days atlc 'M,".

dule of publication tll tbe FEDERAL REGISTER].
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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Pa,'t 39

(Docket No, FAA-2009-+++++; Directorate Identifier 2009-NM-U80-AD(

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RIN 212U-AA64

AGENCY: Federal Aviation Administration (FAA), Department of Transportation

(DOT).

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Airworthiness Directives; Boeing Model 737-600, -700, -70De, -800, -900, and -900E ~~~r;J;Sl

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date of publication in tbe FEDERAL REGISTER].

slat track downstop assemblies, which could result in a fuel leak and consequent fire.

assemblies. We arc proposing th.is AD to prevent loose or lllissing part's from the main

necessary. This proposed AD also removes ailplanes from the applicability. This 1\

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proposed AD results from reports of parts coming off the main slat track downstop

of the aft side guide with new bolts, and removing any debris found in the slat can if

require replacing the hardware of the down stop assembly with a new hardware of the

of the nut and bolt, and corrective actions if necessary. This proposed AD would also

track downstop assemblies to verify that proper hardware is installed, onc-time torquing [>AT~

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dOW11stop assembly, doing a detailed inspection or a borescope inspection of the slat

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cans of each vving and the lower rail of the slat main tracks for debris, replacing the bolt 7 ,"'U· J '!"

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ACTION: Notice of proposed fulcmaking (NPRM). lNmM.5iS;u

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SUMMA.RV: The FAA proposes to supersede an existing airw0l1l1incss directive (AD) P':.."// ._,,",

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that applies to all Boeing Model 737-600, -700, -70De, -800, -900, and -900ER series Rou"ng 5y,,;IIo'

. 1 TI .. AD I . .. d ·1d· . f h 1 - I '2.-0:' alrp anes. ]e eXisting current y reqUIres repetltlVe etal e inspectIOns 0 t e s at H;IAL5/SIG

DATES: We must receive comments on this proposed AD by [insert date 45 days after

ADDRESSES: You may send comments by any of the following methods:

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14910-13-U]

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39 t"1i\Jl'1m'-II

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RIN 2120-AA64

[Docket No, FAA-2009-' , , , '; Directorate Identifier 2009-NM-080-ADI

AGENCY: Federal Aviation Administration (FAA), Department of Transportation

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Ain ••'orthincss Directives; Boeing Model 737~~OO,-700, -70De, -800, -900, and -900E k:lri~~SL

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that applies to all Boeing Model 737-600, -700, -700C, -800, -900, and -900ER series

ACTION: Notice of proposed rulemaking (NPRM),

airplanes. The existing AD currently requires repetitive detailed inspections of the slat

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SUMMARY: The FAA proposes to supersede an existing ainvorthiness directive (AD o.o.TE -

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track downstop assemblies to verify that proper hardware is installed, one-time torquing

of the nut and bolt, and corrective actions if necessary. This proposed AD would also

require replacing the hard'\.vare of the do\\'Jl stop assembly with a new hardware of the

down stop assembly, doing a detailed inspection or a borescope inspection of the slat

cans of eac.h wing and the lower rail of the slat main tracks for debris, replacing the bolt

of the aft side guide with new bolts, aTJdremoving any debris found in the slat can if

necessary. This proposed AD also removes airplanes from the applicability. This

proposed AD results from reports of parts coming off the main slat track downstop

assemblies. We arc proposing this AD to prevent loose or missing parts from the main

slat track dO\~"'nstopassemblies, which could result in a fuel leak and consequent fire.

DATES; Wc must receive comments oft thlS proposed AD by [insert date 45 days after

date of publication in tbc FEDERAL REGISTER].

ADDRESSES: You may send comments by any of the following methods: