### (4910-13-P)



## 1f1J!\~- 10 

# 0223 [Docket No. FAA-2010-*****; Directorate Identifier 2009-NM-IOS-AD) R1N 2120-AA64 '/\'\ -II 

# 7!Jh1M>-- Airworthiness Directives; Bombardier, lnc. Model CL-600-2B19 (Regional Jet Series

# '3f

# '2/10

OOVT'NG SYMBOL 

### 100&440), CL-600-2CI0 (Regional Jet Series 700, 701 &702), CL-600-2Dl5 Federal Aviation Administration 14CFR Part 39 DEPARTMENT OF TRANSPORTATION

NITIALSISIG 

### (Regional Jet Series 705), and CL-600-2D24 (Regional Jet Series 900) Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice ofproposed rulemaking (NPRM). SUMMARY: We propose to adopt anew airworthiness directive (AD) fortheproduct listed above. This proposed AD results from mandatory continuing airworthiness information (MeAl) originated byanaviation authority ofanother country to identify and correct anunsafe condition on an aviation product. The MeAl describes theunsafe ATE condition as: urING SYMBOL 

### Several cases ofcorrosion in lower structural members ofthe passenger door have been reported. Itwas subsequently determined that adrainage ramp (constructed fromresin) had deteriorated with time andwas retaining moisture. 

## *** Corrosion leftundetected could eventually affect the structural integrity ofthe door and surrounding structure. rNfTlALS.'SIG

SVMBOL 

### The proposed AD would require actions that are intended to address theunsafe conditi m 

### described in the MeAl. DATES: We must receive comments on this proposed AD by [insert date 45 days after ~1TlAl.S'S1G 

### date ofpnbhcation in the FEDERAL REGISTER]. 

## '"

### (4910-13-PI CO"CU""FNC"~ ROUTING ~\'''PKIL ANt-171 

### DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 

### 14CFR Part 39 LGB-AEG (Dockct No. FAA·2010·*****; Directorate Identifier 2009-NM-105-ADl IUN 2120-AA64
Ainvorthiness Directives; Bombardier, Inc. Model CL·600-2B 19 (Regional Jet Series 100 

### &440), CL-600-2CIO (Regional Jet Series 700, 701 

### & 702), CL-600-2D 15 (Regional Jet Series 705), and CL-600-2D24 (Regional Jet Series 900) Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice ofproposed rulemaking (NPRM). ANE-171 INntA",,,SIG 'JjI~cill
DATE 

### 1/21 10 ROlfTJNG>Y","OL ANE-171

I('llfflN(:SYMllL1l SUMMARY: We propose to adopt a new airworthiness directive (AD) for the products ANE-170 li~ted above. This proposed AD results from mandatory continuing airworthiness infonnation (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAl describes tbe unsafe condition as: Several cases of corrosion in lower structural members oftile passenger door have been reported. 1twas subsequently dete1111inedthat a drainage ramp (constructed from resin) had deteriorated with time and was retaining moisture. 

## *** Corrosion left undetected could eventually affect the structural integrity of the door and sun·ounding structure. A Socills

RQ,nIN'; ~Y"'HuL

INlrlALS'SiG 

## h"~"",--- The proposed AD would require actions that are intended to address the unsafe condition b~~- described inthe MCAI. DATES: We must receive comments on this proposed AD by (insct1 date 45 days after date of publication inthe FEDERAL REGISTER].