### [4910-13-Pj

L'O(iSYMllOt NCURRFJ'iCES Our,,,,, SVM!lO~ Federal Aviation Administration



### RIN 2120-AA64

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### 700,701, & 702) Airplanes, Model CL-600-2DI5 (Regional Jet Series 705) Airplanes, 

## ~VJ). and Model CL-600-2D24 (Regional Jet Series 900) Airplanes DEPARTMENT OF TRANSPORTATION

Airworthiness Directives; Bombardier, Inc. Model CL-600-2ClO (Regional Jet Seri (Docket No. FAA-2009-1033; Directorate Identifier 2009-NM-I04-AD; Ameudme 

# Iln?2b i2-C6 39-*'f~*; AD2010-**-**} s 14CFR Part 39



### AGENCY: Federal Aviation Administration (FAA), Department ofTransportation (DOT). ACTION: Final rule. R(l1]T11'G sl"MOOt 

### SUMMARY: We are superseding an existing airworthiness directive (AD) forthe INI'IIACS"'"G 

### products listed above. This AD results from mandatory continuing airworthiness information (MeAl) originated by an aviation authority ofanother country to identify and COITect

an unsafe condition on an aviation product. The MeAldescribes the unsaf INlTIAI..'l."G

IlATE 

### condition as: Following in-flight test deployments on CL-600-2B 19aircraft, several Air-DJiven generators (ADGs) failed tocome on-line. Investigation revealed that, as aresult ofawiring anomaly that had nOl 

### been detected during ADG manufacture, a short circuit was possible between certain internal wires and their metallic over-braided shields, which could result inthe ADG not providing power when deployed. 

## *'"'" SITIAl$S'G

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### The unsafe condition is failure ofthe ADG, which could lead to loss ofseveral funerio I~ 

### essential forsafe flight. We are issuing this AD to require actions to correct the unsafe

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### 14910-13-T" ~~'~~~~;~"""'~ OEI)ARTI\'II?NT OF THANSPORTATION Federal Aviation AdOlillistJ-alioll 14CFR Part 39 jDockct No. EAA-200,9-1033; Directorate ldentine.· 2009-N]\1-104·AD; Amelldment

RfN 2120-AA64 Ainvol-tbiucss Oircctjvcs; Bombardier, Inc. Model CL-600-2Cl 0 (Regional Jet Scrie.c; 700, 701, &702) Airplanes, Model CL-600-2D15 (Regional Jet Series 705) Airplanes, <lndModel CL-600-2D24 (Regional Jet Series 900) Airplanes ACF.NCY: Federnl Aviation Administration (FAA), Department ofTransportation (DOT). ACTION: Final rule. SUNfMARV: We arc superseding an eXlsting airworthiness directive (AD) for the products listed above. This .ADresulLc; from mandatory continuing airw0I1hincss informlltion (MeAl) originated by an avi::..tionaulhority of another country to identify and c.oncet an unsale condition on all aviation product. The MeAl describes the unsafe condilioll as: Following in-llight test deploymenls on ClAjOO-2B 19aircraft, several Air-Oriven gCllefHtors (ADGs) failed to COI1l~oll-lin<:_ investigation revealed that, as aresult ofa wiring anolllaly that had not been detected c1ming ADG ll1i:lnUfacllll'c, a ~hort cirCUli was possible belween ccrlain inlCnllll wires ,Hlldtheir metallic over·braidcd shields, wl1ich could rCSllll ill the AD(t 110t providing jmwer when deployed. '"

### *'* The ullsafo condition is failure ofthe ADG, which could leud to loss of several functions 

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