Federal Register / Vol. 76, No. 55 / Tuesday, March 22, 2011 / Rules and Regulations 15823 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0703; Directorate 

Identifier 2010–NM–040–AD; Amendment 

39–16633; AD 2011–06–08] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Model CL–600–2B19 (Regional Jet 

Series 100 & 440) Airplanes, CL–600– 

2C10 (Regional Jet Series 700, 701, & 

702) Airplanes, CL–600–2D15 

(Regional Jet Series 705) Airplanes, 

and CL–600–2D24 (Regional Jet Series 

900) Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for the 

products listed above. This 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: 

There have been failures of the harness 

assembly (power feeder wires) connecting the 

Air-Driven Generator (ADG) to the aeroplane 

electrical system, in the area close to the 

ADG cannon plug. Several electrical wires 

were found cut as a combined result of 

corrosion and bending stress from the 

harness mounting to the ADG. 

The ADG electrical wires are insulated 

with a silver-plating for corrosion protection. 

It has been determined that the silver-plating 

of wire strands in the area of tight bend is 

highly susceptible to breakdown. The plating 

layer may crack as a result of mechanical 

stress, and consequently lead to the onset of 

corrosion on all, or a majority, of the wire 

strands. 

In the event of a damaged harness 

assembly, the ADG may not be able to 

provide emergency electrical power to the 

aeroplane. * * * 

We are issuing this AD to require 

actions to correct the unsafe condition 

on these products. 

DATES: This AD becomes effective April 

26, 2011. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of April 26, 2011. 

ADDRESSES: You may examine the AD 

docket on the Internet at http:// 

www.regulations.gov or in person at the 

U.S. Department of Transportation, 

Docket Operations, M–30, West 

Building Ground Floor, Room W12–140, 

1200 New Jersey Avenue, SE., 

Washington, DC. 

FOR FURTHER INFORMATION CONTACT: 

Assata Dessaline, Aerospace Engineer, 

Avionics and Flight Test Branch, ANE– 

172, FAA, New York Aircraft 

Certification Office, 1600 Stewart 

Avenue, Suite 410, Westbury, New York 

11590; telephone (516) 228–7301; fax 

(516) 794–5531. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an AD that would 

apply to the specified products. That 

NPRM was published in the Federal 

Register on August 5, 2010 (75 FR 

47249). That NPRM proposed to correct 

an unsafe condition for the specified 

products. The MCAI states: 

There have been failures of the harness 

assembly (power feeder wires) connecting the 

Air-Driven Generator (ADG) to the aeroplane 

electrical system, in the area close to the 

ADG cannon plug. Several electrical wires 

were found cut as a combined result of 

corrosion and bending stress from the 

harness mounting to the ADG. 

The ADG electrical wires are insulated 

with a silver-plating for corrosion protection. 

It has been determined that the silver-plating 

of wire strands in the area of tight bend is 

highly susceptible to breakdown. The plating 

layer may crack as a result of mechanical 

stress, and consequently lead to the onset of 

corrosion on all, or a majority, of the wire 

strands. 

In the event of a damaged harness 

assembly, the ADG may not be able to 

provide emergency electrical power to the 

aeroplane. This directive is issued to correct 

the identified unsafe condition by requiring 

[the modification of the ADG, which 

includes] the replacement of the harness 

assembly with tin-plated electrical wires, [the 

replacement of the backshell,] and the reorientation of the ADG cannon plug to reduce 

bending stress. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Updated Relevant Service Information 

We have received Bombardier Service 

Bulletin 601R–24–128, Revision C, 

dated May 14, 2010. In the NPRM we 

referred to Bombardier Service Bulletin 

601R–24–128, Revision A, dated 

November 27, 2009, as the source of 

service information for doing the 

required actions on certain models 

affected by this AD. Revision C of that 

service bulletin makes certain editorial 

changes. We have revised paragraph 

(g)(1) of this AD to specify Revision C 

of that service bulletin, and revised 

paragraph (h) of this AD to give credit 

for having done Bombardier Service 

Bulletin 601R–24–128, Revision A, 

dated November 27, 2009, and Revision 

B, dated April 16, 2010, prior to the 

effective date of this AD. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

considered the comment received. 

Request To Shorten Compliance Time 

Air Line Pilots Association, 

International (ALPA) requested that the 

compliance time of 72 months be 

reduced to 36 months, because the 

corrective action only requires 8 workhours to complete and ALPA believes 

that 72 months is too long to comply 

with the AD based on the importance of 

this modification. 

We do not agree with the request for 

a shorter compliance time. In 

developing the compliance time, we 

determined that the compliance time of 

72 months or 6,000 flight hours, 

whichever occurs first, is appropriate in 

consideration of the safety implications, 

the average utilization rate of the 

affected fleet, the practical aspects of an 

orderly inspection of the fleet during 

regular maintenance periods, and the 

availability of required modification 

parts. In addition, our compliance time 

corresponds with the 72-month 

compliance time of the parallel AD 

issued by Transport Canada Civil 

Aviation (TCCA). We have not changed 

the AD in this regard. 

Change to Applicability in This Final 

Rule 

We received notice from Bombardier, 

Inc. and TCCA that certain airplanes 

identified in the NPRM have had the 

actions specified by this AD already 

incorporated in production, and 

therefore are not affected by the 

identified unsafe condition. 

Specifically, Model CL–600–2B19 

(Regional Jet Series 100 & 440) 

airplanes, serial numbers 8108 through 

8111 have had the actions incorporated. 

We have reduced the applicability in 

paragraph (c)(1) of this AD accordingly. 

Conclusion 

We reviewed the available data, 

including the comment received, and 

determined that air safety and the 

public interest require adopting the AD 

with the changes described previously. 

We determined that these changes will 

not increase the economic burden on 

any operator or increase the scope of the 

AD. 


Emcdonald on DSK2BSOYB1PROD with RULES
15824 Federal Register / Vol. 76, No. 55 / Tuesday, March 22, 2011 / Rules and Regulations 

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 required different 

actions in this AD from those in the 

MCAI in order to follow our FAA 

policies. Any such differences are 

highlighted in a NOTE within the AD. 

Costs of Compliance 

We estimate that this AD will affect 

920 products of U.S. registry. We also 

estimate that it will take 8 work-hours 

per product to comply with the basic 

requirements of this AD. The average 

labor rate is $85 per work-hour. 

Required parts will cost about $1,881 

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 parts. As we do not 

control warranty coverage for affected 

parties, some parties may incur costs 

higher than estimated here. Based on 

these figures, we estimate the cost of 

this AD to the U.S. operators to be 

$2,356,120, or $2,561 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 AD will not 

have federalism implications under 

Executive Order 13132. This AD will 

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 AD: 

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 AD and placed it in the AD docket. 

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 the NPRM, 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. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

Adoption of the Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 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: 

2011–06–08 Bombardier, Inc.: Amendment 

39–16633. Docket No. FAA–2010–0703; 

Directorate Identifier 2010–NM–040–AD. 

Effective Date 

(a) This airworthiness directive (AD) 

becomes effective April 26, 2011. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to the airplanes 

identified in paragraphs (c)(1), (c)(2), and 

(c)(3) of this AD, certificated in any category. 

(1) Bombardier, Inc. Model CL–600–2B19 

(Regional Jet Series 100 & 440) airplanes, 

serial numbers 7305 through 7990 inclusive, 

and 8000 through 8107 inclusive. 

(2) Bombardier, Inc. Model CL–600–2C10 

(Regional Jet Series 700, 701, & 702) 

airplanes, serial numbers 10003 through 

10302 inclusive. 

(3) Bombardier, Inc. Model CL–600–2D15 

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

(Regional Jet Series 900) airplanes, serial 

numbers 15001 through 15259 inclusive. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 24: Electrical power. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

There have been failures of the harness 

assembly (power feeder wires) connecting the 

Air-Driven Generator (ADG) to the aeroplane 

electrical system, in the area close to the 

ADG cannon plug. Several electrical wires 

were found cut as a combined result of 

corrosion and bending stress from the 

harness mounting to the ADG. 

The ADG electrical wires are insulated 

with a silver-plating for corrosion protection. 

It has been determined that the silver-plating 

of wire strands in the area of tight bend is 

highly susceptible to breakdown. The plating 

layer may crack as a result of mechanical 

stress, and consequently lead to the onset of 

corrosion on all, or a majority, of the wire 

strands. 

In the event of a damaged harness 

assembly, the ADG may not be able to 

provide emergency electrical power to the 

aeroplane. * * * 

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) Within 6,000 flight hours or 72 months 

after the effective date of this AD, whichever 

occurs first, do the applicable actions 

specified in paragraph (g)(1) or (g)(2) of this 

AD. 

(1) For Model CL–600–2B19 (Regional Jet 

Series 100 & 440) airplanes: Modify the airdriven generator (ADG) in accordance with 

the Accomplishment Instructions of 

Bombardier Service Bulletin 601R–24–128, 

Revision C, dated May 14, 2010. 

(2) For Model 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: Modify 

the ADG in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 670BA–24–027, dated 

September 17, 2009. 


Emcdonald on DSK2BSOYB1PROD with RULES
Federal Register / Vol. 76, No. 55 / Tuesday, March 22, 2011 / Rules and Regulations 15825 

Credit for Actions Accomplished in 

Accordance With Previous Service 

Information 

(h) Actions accomplished before the 

effective date of this AD in accordance with 

the Bombardier service bulletins identified in 

Table 1 of this AD are considered acceptable 

for compliance with the corresponding action 

specified in this AD. 

TABLE 1—CREDIT SERVICE BULLETINS

Bombardier Service Bulletin— Revision— Dated— 

601R–24–128 .................................................................................................................................. Original ...................... September 17, 2009. 

601R–24–128 .................................................................................................................................. A ................................ November 27, 2009. 

601R–24–128 .................................................................................................................................. B ................................ April 16, 2010. 

FAA AD Differences 

Note 1: This AD differs from the MCAI 

and/or service information as follows: The 

Canadian airworthiness directive includes 

Model CL–600–2B19 airplanes having serial 

numbers 8108 through 8111 in the 

applicability. This AD does not apply to 

those airplanes. 

Other FAA AD Provisions 

(i) 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, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding 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. 

Related Information 

(j) Refer to MCAI Canadian Airworthiness 

Directive CF–2009–47, dated December 14, 

2009; Bombardier Service Bulletin 601R–24– 

128, Revision C, dated May 14, 2010; and 

Bombardier Service Bulletin 670BA–24–027, 

dated September 17, 2009; for related 

information. 

Material Incorporated by Reference 

(k) You must use Bombardier Service 

Bulletin 601R–24–128, Revision C, dated 

May 14, 2010; or Bombardier Service Bulletin 

670BA–24–027, dated September 17, 2009; as 

applicable; to do the actions required by this 

AD, unless the AD specifies otherwise. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

this service information under 5 U.S.C. 

552(a) and 1 CFR part 51. 

(2) For service information identified in 

this AD, contact Bombardier, Inc., 400 CoˆteVertu 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. 

(3) You may review copies of the 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. 

(4) You may also review copies of the 

service information that is incorporated by 

reference at the National Archives and 

Records Administration (NARA). For 

information on the availability of this 

material at NARA, call 202–741–6030, or go 

to: http://www.archives.gov/federal_register/ 

code_of_federal_regulations/ 

ibr_locations.html. 

Issued in Renton, Washington, on March 4, 

2011. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2011–5771 Filed 3–21–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2010–1246; Airspace 

Docket No. 10–ANM–17] 

Amendment of Class E Airspace; 

Pueblo, CO 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: This action will amend 

existing Class E airspace at Pueblo 

Memorial Airport, Pueblo, CO, to 

facilitate vectoring of Instrument Flight 

Rules (IFR) traffic from en route airspace 

to Pueblo Memorial Airport. The FAA is 

taking this action to enhance the safety 

and management of aircraft operations 

at the airport. 

DATES: Effective date, 0901 UTC, June 

30, 2011. The Director of the Federal 

Register approves this incorporation by 

reference action under 1 CFR Part 51, 

subject to the annual revision of FAA 

Order 7400.9 and publication of 

conforming amendments. 

FOR FURTHER INFORMATION CONTACT: 

Eldon Taylor, Federal Aviation 

Administration, Operations Support 

Group, Western Service Center, 1601 

Lind Avenue, SW., Renton, WA 98057; 

telephone (425) 203–4537. 

SUPPLEMENTARY INFORMATION: 

History 

On January 14, 2011, the FAA 

published in the Federal Register a 

notice of proposed rulemaking to amend 

Class E airspace at Pueblo, CO (76 FR 

2609). Interested parties were invited to 

participate in this rulemaking effort by 

submitting written comments on the 

proposal to the FAA. No comments 

were received. 

Class E airspace designations are 

published in paragraph 6005 of FAA 

Order 7400.9U dated August 18, 2010, 

and effective September 15, 2010, which 

is incorporated by reference in 14 CFR 

Part 71.1. The Class E airspace 

designations listed in this document 

will be published subsequently in that 

Order. 

The Rule 

This action amends Title 14 Code of 

Federal Regulations (14 CFR) Part 71 by 

amending Class E airspace extending 

upward from 700 feet above the surface, 

at Pueblo Memorial Airport, to 

accommodate en route IFR aircraft at 

Pueblo Memorial Airport. The southern 

boundary of the 13,700 foot mean sea 

level section has a small gap of airspace 

associated with V–83–210 leaving over 

a .5 nautical mile gap of unprotected 

airspace in that area. This action will 

add the additional controlled airspace 

area necessary for the safety and 

management of IFR operations at Pueblo 

Memorial Airport. With the exception of 

editorial changes, this rule is the same 

as that proposed in the NPRM. 

The FAA has determined this 

regulation only involves an established 


Emcdonald on DSK2BSOYB1PROD with RULES