O~CURRE~CE';

~OUTING SYMBOL

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[491O-I3-Pj

RlN 2120-AA64

AGENCY: Federal Aviation Administration (FAA), DOT.

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

Ainvorthiness Directives; Bombardier, Inc. Model DHC-8-400 Series Airplanes

listed above. This proposed AD results from mandatory continuing airwor1hiness OImNG YM"O'-

14 CFR Part 39 O't"Y:P

?-O{/-

fDocket No. FAA_mtf-''dd<Hj Directorate Identifier 2010-NM-230-AD]

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY: We propose to adopt a new airworthiness directive (AD) for the prod V'l11

information (MeAl) originated by an aviation authority of another country to identi 'lTIAl5ISIG

and correct an w1safe condition on an aviation product. The MeAl describes the UDS -"E

condition as:

RO\fTINGSH'"OL

Bombardier Aerospace has completed a system safety review of the

aeroplanes fuel system against fuel tank safety standards introduced in

Chapter 525 of the Airworthiness Manual through Notice of Proposed

Amendment (NPA) 2002-043 [which corresponds with the FAA's Special

Federal Aviation Regulation (SFAR) 88]. The identified non-compliances

were then assessed using Transport Canada Policy Letter No. 525-001, to

determine if mandatory corrective action is required.

The assessment showed that a number of modifications to the fuel system

are required to mitigate unsafe conditions that could result in potential

ignition source within the fuel system.

DATE

ROUl1~GSY"FJOL

ROUTING SYMBOL

DATE

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

described in the MCAI.

OATES: We must receive comments on this proposed AD by [INSERT DATE 45
14910-13-]')

DEPARTMENT OF TRANSPORTA nON

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2010-*"'***; Directorate Identifier 2010-NM-230-AD]

RlN 2120-AA64

Ainvorthincss Directives; Bombardier, Inc. Model DHC-8-400 Series 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 products

listed above. This proposed AD results from mandatory continuing airworthiness

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

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

condition as:

Bombardier Aerospace has completed a system safety revie\v of the

aeroplanes fuel system against fuel tank safety standards introduced in

Chapter 525 or the Aif\vorthiness Manual through Notice of Proposed

Amendment (NPA) 2002-043 [which corresponds with the FAA '5 Special

Federal Aviation Regulation (SF AR) 88]. -nlC identified non-compliances

were then assessed using Tnmsport Canada Policy Letter No. 525-001, to

determine if mandatory corrective fiction is required.

The assessment shov,ied that a number of modifications to the fuel system

are required to mitigate unsafe conditions that could result in potential

ignition source within the fuel system.

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

described In the MeAl.

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[4910-13-P]

DEPARTMENT OF TRANSPORT AnON

Federal Aviation Administration

14 CFR Part 39

!Docket No. FAA-2010-***,aj Directorate Identifier lOlO-NM-230-ADJ

RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc. Model DHC-8-400 Series Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

SUl\1MARY: We propose to adopt a new airworthiness directive (AD) for the products

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

condition as:

Bombardier Aerospace has completed a system safety review of the

aeroplanes fuel system against fuel tank safety standards introduced in

Chapter 525 of the Airworthiness Manual through Notice of Proposed

Amendment (NPA) 2002-043 [which corresponds with the FAA's Special

Federal Aviation Regulation (SFAR) 88]. The identified non-compliances

were then assessed using Transport Canada Policy Letter No. 525-00 I, to

determine if mandatory corrective action is required.

The assessment showed that a number of modifications to the fuel system

are required to mitigate unsafe conditions that could result in potential

ignition source within the fuel system.

CONCURl<DIC£S

ROIJTlJ<a S\'l.IIlOL

AN&173

-K. Dowling

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ANE-171

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D. ParriUo

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

described in the MCAl.