12152 Federal Register / Vol. 75, No. 49 / Monday, March 15, 2010 / Proposed Rules 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0223; Directorate 

Identifier 2009–NM–105–AD] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Model CL–600–2B19 (Regional Jet 

Series 100 & 440), CL–600–2C10 

(Regional Jet Series 700, 701 & 702), 

CL–600–2D15 (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 

products listed above. This proposed 

AD results from mandatory continuing 

airworthiness information (MCAI) 

originated by an aviation authority of 

another country to identify and correct 

an unsafe condition on an aviation 

product. The MCAI describes the unsafe 

condition as: 

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. 

The proposed AD would require actions 

that are intended to address the unsafe 

condition described in the MCAI. 

DATES: We must receive comments on 

this proposed AD by April 29, 2010. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: (202) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, 

M–30, West Building Ground Floor, 

Room W12–140, 1200 New Jersey 

Avenue, SE., Washington, DC 20590. 

• Hand Delivery: U.S. Department of 

Transportation, Docket Operations, 

M–30, West Building Ground Floor, 

Room W12–40, 1200 New Jersey 

Avenue, SE., Washington, DC, between 

9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this proposed AD, contact Bombardier, 

Inc., 400 Coˆte Vertu Road West, Dorval, 

Que ́bec H4S 1Y9, Canada; telephone 

514–855–5000; fax 514–855–7401; 

e-mail thd.crj@aero.bombardier.com; 

Internet http://www.bombardier.com. 

You may review copies of the 

referenced service information at the 

FAA, Transport Airplane Directorate, 

1601 Lind Avenue, SW., Renton, 

Washington. For information on the 

availability of this material at the FAA, 

call 425–227–1221 or 425–227–1152. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Operations office between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. The AD docket 

contains this proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Operations 

office (telephone (800) 647–5527) is in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Craig Yates, Aerospace Engineer, 

Airframe and Mechanical Systems 

Branch, ANE–171, FAA, New York 

Aircraft Certification Office, 1600 

Stewart Avenue, Suite 410, Westbury, 

New York 11590; telephone (516) 228– 

7355; fax (516) 794–5531. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposed AD. Send your comments 

to an address listed under the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2010–0223; Directorate Identifier 

2009–NM–105–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this proposed AD. We will 

consider all comments received by the 

closing date and may amend this 

proposed AD based on those comments. 

We have lengthened the 30-day 

comment period for proposed ADs that 

address MCAI originated by aviation 

authorities of other countries to provide 

adequate time for interested parties to 

submit comments. The comment period 

for these proposed ADs is now typically 

45 days, which is consistent with the 

comment period for domestic transport 

ADs. 

We will post all comments we 

receive, without change, to http:// 

www.regulations.gov, including any 

personal information you provide. We 

will also post a report summarizing each 

substantive verbal contact we receive 

about this proposed AD. 

Discussion 

Transport Canada Civil Aviation, 

which is the aviation authority for 

Canada, has issued Canadian 

Airworthiness Directive CF–2009–23, 

dated May 19, 2009 (referred to after 

this as ‘‘the MCAI’’), to correct an unsafe 

condition for the specified products. 

The MCAI states: 

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. The ramp, therefore, 

requires removal, both to prevent further 

corrosion and to allow full access to the door 

structure during future scheduled 

inspections. Corrosion left undetected could 

eventually affect the structural integrity of 

the door and surrounding structure. 

The required actions include a general 

visual inspection for corrosion and 

damage of the lower inner section of the 

door, repair if necessary, and 

application of corrosion inhibitor 

compound. You may obtain further 

information by examining the MCAI in 

the AD docket. 

Relevant Service Information 

Bombardier has issued the 

modification summary packages listed 

in the following table. The actions 

described in this service information are 

intended to correct the unsafe condition 

identified in the MCAI. 

SERVICE INFORMATION

Model Bombardier service information Revision Date 

CL-600–2B19 ................................................................... Bombardier Modification Summary IS601R52110030 ... A1 .......... April 24, 2009. 

CL–600–2C10, CL–600–2D15 and CL–600–2D24 ......... Bombardier Modification Summary IS67052110074 ..... A1 .......... April 24, 2009. 


emcdonald on DSK2BSOYB1PROD with PROPOSALS
Federal Register / Vol. 75, No. 49 / Monday, March 15, 2010 / Proposed Rules 12153 

FAA’s Determination and Requirements 

of This Proposed AD 

This product has been approved by 

the aviation authority of another 

country, and is approved for operation 

in the United States. Pursuant to our 

bilateral agreement with the State of 

Design Authority, we have been notified 

of the unsafe condition described in the 

MCAI and service information 

referenced above. We are proposing this 

AD because we evaluated all pertinent 

information and determined an unsafe 

condition exists and is likely to exist or 

develop on other products of the same 

type design. 

Differences Between This AD and the 

MCAI or Service Information 

We have reviewed the MCAI and 

related service information and, in 

general, agree with their substance. But 

we might have found it necessary to use 

different words from those in the MCAI 

to ensure the AD is clear for U.S. 

operators and is enforceable. In making 

these changes, we do not intend to differ 

substantively from the information 

provided in the MCAI and related 

service information. 

We might also have proposed 

different actions in this AD from those 

in the MCAI in order to follow FAA 

policies. Any such differences are 

highlighted in a NOTE within the 

proposed AD. 

Costs of Compliance 

Based on the service information, we 

estimate that this proposed AD would 

affect about 1,072 products of U.S. 

registry. We also estimate that it would 

take about 28 work-hours per product to 

comply with the basic requirements of 

this proposed AD. Required parts would 

cost about $0 per product. Where the 

service information lists required parts 

costs that are covered under warranty, 

we have assumed that there will be no 

charge for these costs. As we do not 

control warranty coverage for affected 

parties, some parties may incur costs 

higher than estimated here. The average 

labor rate is $85 per work-hour. Based 

on these figures, we estimate the cost of 

the proposed AD on U.S. operators to be 

$2,551,360, or $2,380 per product. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. ‘‘Subtitle VII: 

Aviation Programs,’’ describes in more 

detail the scope of the Agency’s 

authority. 

We are issuing this rulemaking under 

the authority described in ‘‘Subtitle VII, 

Part A, Subpart III, Section 44701: 

General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

Regulatory Findings 

We determined that this proposed AD 

would not have federalism implications 

under Executive Order 13132. This 

proposed AD would not have a 

substantial direct effect on the States, on 

the relationship between the national 

Government and the States, or on the 

distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify this proposed regulation: 

1. Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866; 

2. Is not a ‘‘significant rule’’ under the 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979); and 

3. Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this proposed AD and placed it in the 

AD docket. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

2. The FAA amends § 39.13 by adding 

the following new AD: 

Bombardier, Inc: Docket No. FAA–2010– 

0223; Directorate Identifier 2009–NM– 

105–AD. 

Comments Due Date 

(a) We must receive comments by April 29, 

2010. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to the Bombardier, Inc. 

airplanes identified in paragraphs (c)(1), 

(c)(2), and (c)(3) of this AD, certificated in 

any category. 

(1) Model CL–600–2B19 (Regional Jet 

Series 100 & 440) airplanes, serial numbers 

7003 through 8089 inclusive; 

(2) Model CL–600–2C10 (Regional Jet 

Series 700, 701 & 702) airplanes, serial 

numbers 10003 through 10265 inclusive; and 

(3) Model CL–600–2D15 (Regional Jet 

Series 705) and CL–600–2D24 (Regional Jet 

Series 900) airplanes, serial numbers 15001 

through 15173 inclusive. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 52: Doors. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

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. The ramp, therefore, 

requires removal, both to prevent further 

corrosion and to allow full access to the door 

structure during future scheduled 

inspections. Corrosion left undetected could 

eventually affect the structural integrity of 

the door and surrounding structure. 

The required actions include a general 

visual inspection for corrosion and damage of 

the lower inner section of the door, repair if 

necessary, and application of corrosion 

inhibitor compound. 

Compliance 

(f) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified, unless the 

actions have already been done. 

Actions 

(g) Before the accumulation of 15,000 total 

flight hours, or within 5,000 flight hours after 

the effective date of this AD, whichever 

occurs later, do the actions specified in 

paragraphs (g)(1), (g)(2), and (g)(3) of this AD. 

(1) Remove the lower passenger door ramp, 

in accordance with the applicable 

Bombardier modification summary package 

specified in Table 1 of this AD. 

(2) Do a general visual inspection for any 

damage and corrosion behind the drainage 

ramp in the lower portion of the passenger 

door. If any damage or corrosion is found, 

before further flight repair in accordance 

with a method approved by the Manager, 

New York Aircraft Certification Office, FAA; 

or Transport Canada Civil Aviation (TCCA) 

(or its delegated agent). 

(3) Remove the lower passenger door ramp 

and apply corrosion inhibitor compound, in 

accordance with the applicable Bombardier 

modification summary package specified in 

Table 1 of this AD. Applying corrosion 

inhibitor compound is a terminating action 

for the requirements of this AD. 


emcdonald on DSK2BSOYB1PROD with PROPOSALS
12154 Federal Register / Vol. 75, No. 49 / Monday, March 15, 2010 / Proposed Rules 

TABLE 1—SERVICE INFORMATION

Applicable airplanes Bombardier service information Revision Date 

Model CL–600–2B19 airplanes ....................................... Bombardier Modification Summary Package 

IS601R52110030.

A1 .......... April 24, 2009. 

Model CL–600–2C10, CL–600–2D15, and CL–600– 

2D24 airplanes.

Bombardier Modification Summary Package 

IS67052110074.

A1 .......... April 24, 2009. 

(4) Inspections and modifications 

accomplished before the effective date of this 

AD according to Bombardier Modification 

Summary Package IS601R52110030, Revision 

A, dated July 5, 2006; or IS67052110074, 

Revision A, dated July 5, 2006; as applicable; 

are considered acceptable for compliance 

with the corresponding inspection or 

modification specified in this AD. 

FAA AD Differences 

Note 1: This AD differs from the MCAI 

and/or service information as follows: 

The MCAI does not require an inspection 

or application of a corrosion inhibitor 

compound. This AD requires both actions. 

Other FAA AD Provisions 

(h) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York Aircraft 

Certification Office (ACO), ANE–170, FAA, 

has the authority to approve AMOCs for this 

AD, if requested using the procedures found 

in 14 CFR 39.19. Send information to ATTN: 

Program Manager, Continuing Operational 

Safety, FAA, New York ACO, 1600 Stewart 

Avenue, Suite 410, Westbury, New York, 

11590; telephone 516–228–7300; fax 516– 

794–5531. Before using any approved AMOC 

on any airplane to which the AMOC applies, 

notify your principal maintenance inspector 

(PMI) or principal avionics inspector (PAI), 

as appropriate, or lacking a principal 

inspector, your local Flight Standards District 

Office. The AMOC approval letter must 

specifically reference this AD. 

(2) Airworthy Product: For any requirement 

in this AD to obtain corrective actions from 

a manufacturer or other source, use these 

actions if they are FAA-approved. Corrective 

actions are considered FAA-approved if they 

are approved by the State of Design Authority 

(or their delegated agent). You are required 

to assure the product is airworthy before it 

is returned to service. 

(3) Reporting Requirements: For any 

reporting requirement in this AD, under the 

provisions of the Paperwork Reduction Act 

(44 U.S.C. 3501 et seq.), the Office of 

Management and Budget (OMB) has 

approved the information collection 

requirements and has assigned OMB Control 

Number 2120–0056. 

Related Information 

(i) Refer to MCAI Canadian Airworthiness 

Directive CF–2009–23, dated May 19, 2009, 

and the Bombardier modification summary 

packages listed in Table 1 of this AD, for 

related information. 

Issued in Renton, Washington on March 4, 

2010. 

Suzanne Masterson, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2010–5515 Filed 3–12–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0225; Directorate 

Identifier 2009–NM–203–AD] 

RIN 2120–AA64 

Airworthiness Directives; Short 

Brothers PLC Model SD3 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 that would 

supersede an existing AD. This 

proposed AD results from mandatory 

continuing airworthiness information 

(MCAI) originated by an aviation 

authority of another country to identify 

and correct an unsafe condition on an 

aviation product. The MCAI describes 

the unsafe condition as: 

Subsequent to accidents involving Fuel 

Tank System explosions in flight * * * and 

on ground, * * * Special Federal Aviation 

Regulation 88 (SFAR88) * * * required a 

safety review of the aircraft Fuel Tank 

System * * *. 

* * * * * 

Fuel Airworthiness Limitations are items 

arising from a systems safety analysis that 

have been shown to have failure mode(s) 

associated with an ‘unsafe condition’ * * *. 

These are identified in Failure Conditions for 

which an unacceptable probability of ignition 

risk could exist if specific tasks and/or 

practices are not performed in accordance 

with the manufacturers’ requirements. 

* * * * * 

The proposed AD would require 

actions that are intended to address the 

unsafe condition described in the MCAI. 

DATES: We must receive comments on 

this proposed AD by April 29, 2010. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: (202) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue, SE., 

Washington, DC 20590. 

• Hand Delivery: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–40, 1200 New Jersey Avenue, SE., 

Washington, DC, between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this proposed AD, contact Short 

Brothers PLC, Airworthiness, P.O. Box 

241, Airport Road, Belfast, BT3 9DZ 

Northern Ireland; telephone +44(0)2890

–462469; fax +44(0)2890–468444; e-mail 

michael.mulholland@aero.

bombardier.com; Internet http:// 

www.bombardier.com. You may review 

copies of the referenced service 

information at the FAA, Transport 

Airplane Directorate, 1601 Lind Avenue 

SW., Renton, Washington. For 

information on the availability of this 

material at the FAA, call 425–227–1221 

or 425–227–1152. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Operations office between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. The AD docket 

contains this proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Operations 

office (telephone (800) 647–5527) is in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Todd Thompson, Aerospace Engineer, 

International Branch, ANM–116, 

Transport Airplane Directorate, FAA, 

1601 Lind Avenue SW., Renton, 

Washington 98057–3356; telephone 

(425) 227–1175; fax (425) 227–1149. 

SUPPLEMENTARY INFORMATION: 


emcdonald on DSK2BSOYB1PROD with PROPOSALS