35622 Federal Register / Vol. 75, No. 120 / Wednesday, June 23, 2010 / Rules and Regulations 

Actions Compliance Procedures 

(1) Replace V-band exhaust couplings, part 

number (P/N) Lycoming 40D21162–340M or 

Eaton/Aeroquip 55677–340M with an improved design Eaton/Aeroquip P/N 

NH1009399–10 or Lycoming P/N 40D23255– 

340M.

At the next regularly scheduled maintenance 

event after July 28, 2010 (the effective date 

of this AD) or within the next 25 hours timein-service (TIS) after July 28, 2010 (the effective date of this AD), whichever occurs 

first.

Remove the spot welded V-band clamp(s) 

and discard. Then, do either of the following 

actions: 

(i) Install the new riveted clamp(s) and tighten 

to an initial torque of 40 in. lbs. Tap the Vband clamp(s) around its circumference 

with a rubber mallet to equalize band tension. Retorque the clamp(s) to 60 in. lbs. 

and again tap the clamp(s) around its circumference. Retorque the clamp(s) to a 60 

in. lbs. final torque and re-safety wire the Vband coupling(s); or 

(ii) Install the new riveted clamp(s) follow 

Lycoming Service Instruction No. 1238B, 

dated January 6, 2010, and re-safety wire 

the V-band coupling(s). 

(2) Do not install any Eaton/Aeroquip P/N 

55677–340M or Lycoming P/N 40D21162– 

340M.

As of July 28, 2010 (the effective date of this 

AD).

Not applicable. 

Alternative Methods of Compliance 

(AMOCs) 

(f) The Manager, Atlanta Aircraft 

Certification Office (ACO), 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: Darby 

Mirocha, Aerospace Engineer, FAA, Atlanta 

ACO, 1701 Columbia Avenue, College Park, 

Georgia 30337; telephone: (404) 474–5573; 

fax: (404) 474–5606. Before using any 

approved AMOC on any airplane to which 

the AMOC applies, notify your appropriate 

principal inspector (PI) in the FAA Flight 

Standards District Office (FSDO), or lacking 

a PI, your local FSDO. 

Material Incorporated by Reference 

(g) You must use Lycoming Service 

Instruction No. 1238B, dated January 6, 2010, 

or the procedures specified in paragraph 

(e)(1) of this AD 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 Lycoming, 652 Oliver Street, 

Williamsport, PA 17701; telephone: (570) 

323–6181; fax: (570) 327–7101; Internet: 

http://www.lycoming.com. 

(3) You may review copies of the service 

information incorporated by reference for 

this AD at the FAA, Central Region, Office of 

the Regional Counsel, 901 Locust, Kansas 

City, Missouri 64106. For information on the 

availability of this material at the Central 

Region, call (816) 329–3768. 

(4) You may also review copies of the 

service information incorporated by reference 

for this AD 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 Kansas City, Missouri, on June 

14, 2010. 

Sandra J. Campbell, 

Acting Manager, Small Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2010–14991 Filed 6–22–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0273; Directorate 

Identifier 2009–NM–134–AD; Amendment 

39–16335; AD 2010–13–04] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Model DHC–8–400 Series 

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: 

Two in-service incidents have been 

reported on DHC–8 Series 400 aircraft in 

which the nose landing gear (NLG) trailing 

arm pivot pin retention bolt (part number 

NAS6204–13D) was damaged. One incident 

involved the left hand NLG tire which 

ruptured on take-off. Investigation 

determined that the retention bolt failure was 

due to repeated contact of the castellated nut 

with the towing device including both the 

towbar and the towbarless rigs. The loss of 

the retention bolt allowed the pivot pin to 

migrate from its normal position and resulted 

in contact with and rupture of the tire. The 

loss of the pivot pin could compromise 

retention of the trailing arm and could result 

in a loss of directional control due to loss of 

nose wheel steering. The loss of an NLG tire 

or the loss of directional control could 

adversely affect the aircraft during take off or 

landing. 

* * * * * 

We are issuing this AD to require 

actions to correct the unsafe condition 

on these products. 

DATES: This AD becomes effective July 

28, 2010. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of July 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: 

Richard Beckwith, 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– 

7302; 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 March 23, 2010 (75 FR 

13682). That NPRM proposed to correct 


jlentini on DSKJ8SOYB1PROD with RULES
Federal Register / Vol. 75, No. 120 / Wednesday, June 23, 2010 / Rules and Regulations 35623 

an unsafe condition for the specified 

products. The MCAI states: 

Two in-service incidents have been 

reported on DHC–8 Series 400 aircraft in 

which the nose landing gear (NLG) trailing 

arm pivot pin retention bolt (part number 

NAS6204–13D) was damaged. One incident 

involved the left hand NLG tire which 

ruptured on take-off. Investigation 

determined that the retention bolt failure was 

due to repeated contact of the castellated nut 

with the towing device including both the 

towbar and the towbarless rigs. The loss of 

the retention bolt allowed the pivot pin to 

migrate from its normal position and resulted 

in contact with and rupture of the tire. The 

loss of the pivot pin could compromise 

retention of the trailing arm and could result 

in a loss of directional control due to loss of 

nose wheel steering. The loss of an NLG tire 

or the loss of directional control could 

adversely affect the aircraft during take off or 

landing. 

To prevent the potential failure of the pivot 

pin retention bolt, Bombardier Aerospace has 

developed a modification which includes a 

new retention bolt, a reverse orientation of 

the retention bolt and a rework of the weight 

on wheel (WOW) proximity sensor cover to 

provide clearance for the re-oriented 

retention bolt. 

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 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 

63 products of U.S. registry. We also 

estimate that it will take about 3 workhours 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 $100 per 

product. Based on these figures, we 

estimate the cost of this AD on U.S. 

operators to be $22,365, or $355 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: 

2010–13–04 Bombardier, Inc.: Amendment 

39–16335. Docket No. FAA–2010–0273; 

Directorate Identifier 2009–NM–134–AD. 

Effective Date 

(a) This airworthiness directive (AD) 

becomes effective July 28, 2010. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Bombardier, Inc. 

Model DHC–8–400, DHC–8–401, and DHC– 

8–402 series airplanes, certificated in any 

category; serial numbers 4001, 4003, 4004, 

4006, and 4008 through 4238 inclusive. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 32: Landing gear. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

Two in-service incidents have been 

reported on DHC–8 Series 400 aircraft in 

which the nose landing gear (NLG) trailing 

arm pivot pin retention bolt (part number 

NAS6204–13D) was damaged. One incident 

involved the left hand NLG tire which 

ruptured on take-off. Investigation 

determined that the retention bolt failure was 

due to repeated contact of the castellated nut 

with the towing device including both the 

towbar and the towbarless rigs. The loss of 

the retention bolt allowed the pivot pin to 

migrate from its normal position and resulted 

in contact with and rupture of the tire. The 

loss of the pivot pin could compromise 

retention of the trailing arm and could result 

in a loss of directional control due to loss of 

nose wheel steering. The loss of an NLG tire 

or the loss of directional control could 

adversely affect the aircraft during take off or 

landing. 


jlentini on DSKJ8SOYB1PROD with RULES
35624 Federal Register / Vol. 75, No. 120 / Wednesday, June 23, 2010 / Rules and Regulations 

To prevent the potential failure of the pivot 

pin retention bolt, Bombardier Aerospace has 

developed a modification which includes a 

new retention bolt, a reverse orientation of 

the retention bolt and a rework of the weight 

on wheel (WOW) proximity sensor cover to 

provide clearance for the re-oriented 

retention bolt. 

Actions and Compliance 

(f) Unless already done, do the following 

actions. 

(1) Within 2,000 flight hours after the 

effective date of this AD: Modify the NLG 

trailing arm by incorporating Bombardier 

Modification Summary 4–113599, in 

accordance with the Accomplishment 

Instructions of Bombardier Service Bulletin 

84–32–65, Revision A, dated March 2, 2009. 

(2) Incorporating Bombardier Modification 

Summary 4–113599 in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 84–32–65, dated December 

17, 2008, is also acceptable for compliance 

with the requirements of paragraph (f)(1) of 

this AD if done before the effective date of 

this AD. 

FAA AD Differences 

Note 1: This AD differs from the MCAI 

and/or service information as follows: No 

differences. 

Other FAA AD Provisions 

(g) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York Aircraft 

Certification Office, 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 FAAapproved 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 

(h) Refer to MCAI Canadian Airworthiness 

Directive CF–2009–29, dated June 29, 2009; 

and Bombardier Service Bulletin 84–32–65, 

Revision A, dated March 2, 2009; for related 

information. 

Material Incorporated by Reference 

(i) You must use Bombardier Service 

Bulletin 84–32–65, Revision A, dated March 

2, 2009, 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.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 June 10, 

2010. 

Jeffrey E. Duven, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2010–14984 Filed 6–22–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0551; Directorate 

Identifier 2009–NM–202–AD; Amendment 

39–16333; AD 2010–13–02] 

RIN 2120–AA64 

Airworthiness Directives; Fokker 

Services B.V. Model F.27 Mark 500 and 

600 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule; request for 

comments. 

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: 

A Fokker 50 operator reported an 

overextended MLG [main landing gear] 

sliding member after landing. During 

subsequent investigation it was found that an 

end stop had unscrewed itself to a certain 

extent. This caused the MLG torque links to 

move into an overcentre position against the 

MLG sliding member. Investigation learned 

that there was no lockwiring present on the 

two lockbolts, which hold the end stop. This 

condition, if not corrected, could lead to 

structural damage of the main gear and loss 

of control of the aeroplanes during the 

landing roll. 

This AD requires actions that are 

intended to address the unsafe 

condition described in the MCAI. 

DATES: This AD becomes effective July 

8, 2010. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of July 8, 2010. 

We must receive comments on this 

AD by August 9, 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. 

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 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: Tom 

Rodriguez, Aerospace Engineer, 

International Branch, ANM–116, 

Transport Airplane Directorate, FAA, 

1601 Lind Avenue SW., Renton, 

Washington 98057–3356; telephone 

(425) 227–1137; fax (425) 227–1149. 

SUPPLEMENTARY INFORMATION: 


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