[4910-13-P]



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ACTION: Final rule; request for comments. (DOT). SUIVIl\tIARY:We are adopting anew airworthiness directive (AD) for the products lis Airworthiness Directives; Bombardier, Inc. Model CL-600-2BI9 (Regional Jet Serie 

# 1;;:~ViBO(; 100&440) Airplanes AGENCY: Federal Aviation Administration (FAA), Department ofTransportation RlN 2120-AA64 

### DEPARTMENTOFTR~SPORTATION



# l03l {Docket No. FAA-2010-*****; Directorate Identifier 2010-NM-202-AD; Amendment

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## 02- 14CFR Part 39 Federal Aviation Administration

above. This AD results from mandatory continuing airworthiness information (MeAl) originated by an aviation authority of another country to identify and correct anunsafe ,HE condition on an aviation product. The 

### MeAl describes the unsafe condition as: UTlNGSYMlIOL Seven cases of on~ground hydraulic accumulator screw cap/end cap failure hav been experienced on CL-600-2B19 aeroplanes, resulting inthe loss ofthe associated hydraulic system andhigh-energy impact damage to adjacent system and structure. 

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## * * A detailed analysis ofthe calculated line oftrajectory ofa failed screw cap/end cap for each ofthe accumulators has been conducted, resulting inthe identification ofseveral areas where systems and/or structural components coul potentially be damaged. Although allofthe failures to date have occurred onth ground, anin-flight failure affecting such components could potentially have an adverse effect on the controllability oftheaeroplane. •:mALSIS", 

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## * O"TE[4910-13-P)



### DEPARTMENT OFTRANSPORTATION Federal Aviation Administration 14CFR Pal139 LGB-AEG 

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### ~,;;;o,m"'_"o"~=o,'" ANE-171 [Docket No. FAA~2010-*****; Directorate Identifier 2010-NM~202-AD~ Amendment 39_HH*; AD 2010-**-**] R1N 2120-AA64 AN&171 Airworthiness Directives; Bombardier, Inc. Model CIr600-2B19 (Regional Jet 

### Series 100 &440) Airplanes AGENCY: Federal Aviation Administration (FAA)! Department ofTransportation (DOT). ACTION: Final rule; request forcomments. AN£...J70 

### SUMMARY: We are adopting anew airworthiness directive (AD) for the products listed ,,,,,,, A 

### above. This AD results 

### frommandatory 

### continuing airworthiness infonnation (MeAl) originated by an aviation authority ofanother country to identify and correct an unsafe oondition on an a.viationproduct. The MeAl describes the lUlsafe condition as: Seven cases ofon-ground hydraulic accumulator screw cap/cnd cap failme have been experienced on CL~600-2B19 aeroplanes, resulting in the loss ofthe associated hydraulic system andhigh·energy impact damage to adjacent systems and structure, •. ,. '" ,,,mAC'''''' 

# • • • • 

# • • • A detailed analysis ofthe calculated line oftrajectory ofafailed screw cap/end cap for ea.ch of the accumulators has been conducted, resulting in 1.he identification of several areas where systems andlor structural components could potentially be damaged. Although all ofthe failures to date have occurred on the ground, anin-flight failure affecting such components could potentially have an 

### adverse effect on the controlJability ofthe aeroplane . 

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## • •RIN 2120-AA64 Federal Avintion Administration 14CFR Part 39 ",~n,".",,·,·, ";,,,,~r. ""'"J' LGB-:\EG
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# • • A detailed analysis of the calculated line of trajectory of a failed screw cap/end cap for each of the accumulators has been conducted, resulting Inthe identification of several areas where systems and/or structuralcomponcnts could potentially be damaged. Although all orthe failures to date have occurred on the ground, an in-flight failure affecting such components could potentially have an adverse effect on the controllability of the aeroplane . condition on an <lviation product. The MeAl describes the llnS,lfe condition as: Seven cases OfO~-grOUnd hydraulic accumulator screw cap/end C'-1p J~lilurehave been experiencedlon CL-600-2B 19 aeroplanes, resulling in the [ass ofthe associated hydraulic system and high~cnergy impact damage to adjacent systems and structure. 

### * 

### * i* originated by an aviation authority of another country to identify and correct 3nunsafe above. This AD results from mandatory continuing airworthiness information (MeAl) 

### 14910-13-PI

ACTION: Final rule; request for comments. AGENCY: Federal Aviation Administration (FAA), Department ofTranspor!mion 100 & 440) Airplanes AinvorthinC5S Directives; Bombardier, Inc. Model CL-600-2B 19 (Regional Jet Series DEPARTl'vfENT OF TRANSPORTATION

IDocket No. FAA-201 0_*****; DircclOI'"atc Identifier 2010-NM-202-AO;

(DO'I),
SllMMA RY: We are adopting a new airworthiness directive (AD) for the products listed



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