(4910-13-P)

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0223

[Docket No. FAA-2010-*****; Directorate Identifier 2009-NM-IOS-AD)

R1N 2120-AA64

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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

14 CFR 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 of proposed rulemaking (NPRM).

SUMMARY: We propose to adopt a new airworthiness directive (AD) for the product

listed above. This proposed AD results from mandatory continuing airworthiness

information (MeAl) originated by an aviation authority of another country to identify

and correct an unsafe condition on an aviation product. The MeAl describes the unsafe ATE

condition as:

urING SYMBOL

Several cases of corrosion in lower structural members of the passenger

door have been reported. It was subsequently determined that 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 surrounding structure.

rNfTlALS.'SIG

SVMBOL

The proposed AD would require actions that are intended to address the unsafe 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].

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ANt-171

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR 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 of proposed rulemaking (NPRM).

ANE-171

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DATE

1/21 10

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ANE-171

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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 of tile 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

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INlrlALS'SiG

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The proposed AD would require actions that are intended to address the unsafe condition

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described in the MCAI.

DATES: We must receive comments on this proposed AD by (insct1 date 45 days after

date of publication in the FEDERAL REGISTER].