78522 Federal Register / Vol. 76, No. 243 / Monday, December 19, 2011 / Rules and Regulations 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–0916; Directorate 

Identifier 2011–NM–127–AD; Amendment 

39–16895; AD 2011–26–05] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: We are superseding an 

existing airworthiness directive (AD) 

that applies to certain Bombardier, Inc. 

Model DHC–8–300 series airplanes. 

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: 

Several cases of aileron terminal quadrant 

support brackets that were manufactured 

using sheet metal have been found cracked 

on DHC–8 Series 300 aircraft. Investigation 

revealed that the failure of the support 

bracket was due to fatigue. Failure of the 

aileron terminal quadrant support bracket 

could result in an adverse reduction of 

aircraft roll control. 

* * * * * 

These conditions could result in loss of 

control of the airplane. We are issuing 

this AD to require actions to correct the 

unsafe condition on these products. 

DATES: This AD becomes effective 

January 23, 2012. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of February 1, 2011 (75 FR 81420, 

December 28, 2010). 

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: Aziz 

Ahmed, Aerospace Engineer, Airframe 

and Mechanical Systems Branch, ANE– 

171, FAA, New York Aircraft 

Certification Office (ACO), 1600 Stewart 

Avenue, Suite 410, Westbury, New York 

11590; telephone (516) 228–7329; 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 September 7, 2011 (76 FR 

55296), and proposed to supersede AD 

2010–26–13, Amendment 39–16553 (75 

FR 81420, December 28, 2010). That 

NPRM proposed to revise the existing 

compliance time to include a 33,000 

total flight hours compliance time. That 

NPRM proposed to correct an unsafe 

condition for the specified products. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

received no comments on the NPRM (76 

FR 55296, September 7, 2011) or on the 

determination of the cost to the public. 

Conclusion 

We reviewed the available data and 

determined that air safety and the 

public interest require adopting the AD 

as proposed. 

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 

about 13 products of U.S. registry. 

The actions that are required by AD 

2010–26–13, Amendment 39–16553 (75 

FR 81420, December 28, 2010), and 

retained in this AD take about 72 workhours per product, at an average labor 

rate of $85 per work-hour. Required 

parts cost about $1,080 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, the estimated 

cost of the currently required actions is 

$93,600, or $7,200 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 (76 FR 55296, 

September 7, 2011), 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. 


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Federal Register / Vol. 76, No. 243 / Monday, December 19, 2011 / Rules and Regulations 78523 

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 

removing Amendment 39–16553 (75 FR 

81420, December 28, 2010) and adding 

the following new AD: 

2011–26–05 Bombardier, Inc.: Amendment 

39–16895. Docket No. FAA–2011–0916; 

Directorate Identifier 2011–NM–127–AD. 

Effective Date 

(a) This airworthiness directive (AD) 

becomes effective January 23, 2012. 

Affected ADs 

(b) This AD supersedes AD 2010–26–13, 

Amendment 39–16553 (75 FR 81420, 

December 28, 2010). 

Applicability 

(c) This AD applies to Bombardier, Inc. 

Model DHC–8–301, –311, and –315 

airplanes, certificated in any category; having 

serial numbers 100 through 530 inclusive. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 57: Wings. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

Several cases of aileron terminal quadrant 

support brackets that were manufactured 

using sheet metal have been found cracked 

on DHC–8 Series 300 aircraft. Investigation 

revealed that the failure of the support 

bracket was due to fatigue. Failure of the 

aileron terminal quadrant support bracket 

could result in an adverse reduction of 

aircraft roll control. 

* * * * * 

These conditions could result in loss of 

control of the airplane. 

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. 

Restatement of Requirements of AD 2010– 

26–13, Amendment 39–16553, (75 FR 81420, 

December 28, 2010) With Reduced 

Compliance Time and no New Service 

Information 

Actions 

(g) For airplanes with an aileron terminal 

quadrant support bracket having part number 

(P/N) 85711569: At the applicable times 

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

AD, install a new aileron input quadrant 

support bracket by incorporating MODSUM 

8Q101250, in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 8–57–43, Revision B, dated 

October 7, 2009. 

(1) For airplanes that have accumulated 

30,000 total flight hours or more as of 

February 1, 2011 (the effective date of AD 

2010–26–13, Amendment 39–16553 (75 FR 

81420, December 28, 2010)): Within 3,000 

flight hours after February 1, 2011. 

(2) For airplanes that have accumulated 

less than 30,000 total flight hours as of 

February 1, 2011: At the earlier of the times 

of paragraphs (g)(2)(i) and (g)(2)(ii). 

(i) Before the accumulation of 33,000 total 

flight cycles or within 6,000 flight hours after 

February 1, 2011, whichever occurs first. 

(ii) Before the accumulation of 33,000 total 

flight hours or within 6,000 flight hours after 

the effective date of this AD, whichever 

occurs first. 

Credit for Actions Accomplished in 

Accordance With Previous Service 

Information 

(h) Doing the installation by incorporating 

MODSUM 8Q101250 is also acceptable for 

compliance with the requirements of 

paragraph (g) of this AD if done before 

February 1, 2011, in accordance with 

Bombardier Service Bulletin 8–57–43, dated 

August 9, 2002; or Bombardier Service 

Bulletin 8–57–43, Revision A, dated January 

17, 2003. 

FAA AD Differences 

Note 1: This AD differs from the MCAI 

and/or service information as follows: No 

differences. 

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. In accordance with 14 CFR 

39.19, send your request to your principal 

inspector or local Flight Standards District 

Office, as appropriate. If sending information 

directly to the New York ACO, send it 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–2009–45, dated December 11, 

2009; and Bombardier Service Bulletin 8–57– 

43, Revision B, dated October 7, 2009; for 

related information. 

Material Incorporated by Reference 

(k) You must use Bombardier Service 

Bulletin 8–57–43, Revision B, dated October 

7, 2009, to do the actions required by this 

AD, unless the AD specifies otherwise. 

(1) The Director of the Federal Register 

previously approved the incorporation by 

reference of Bombardier Service Bulletin 8– 

57–43, Revision B, dated October 7, 2009, on 

February 1, 2011 (75 FR 81420, December 28, 

2010), under 5 U.S.C. 552(a) and 1 CFR part 

51. 

(2) For service information identified in 

this AD, contact Bombardier, Inc., Q–Series 

Technical Help Desk, 123 Garratt Boulevard, 

Toronto, Ontario M3K 1Y5, Canada; 

telephone (416) 375–4000; fax (416) 375– 

4539; email 

thd.qseries@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 

December 6, 2011. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–32019 Filed 12–16–11; 8:45 am] 

BILLING CODE 4910–13–P 


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