12170 Federal Register / Vol. 77, No. 40 / Wednesday, February 29, 2012 / Rules and Regulations 

(n) Related Information 

For more information about this AD, 

contact Marie Hogestad, Aerospace Engineer, 

Systems and Equipment Branch, ANM–130S, 

FAA, Seattle Aircraft Certification Office 

(ACO), 1601 Lind Avenue SW., Renton, 

Washington 98057–3356; phone: 425–917– 

6418; fax: 425–917–6590; email: 

marie.hogestad@faa.gov. 

(o) Material Incorporated by Reference 

(1) You must use the following service 

information to do the actions required by this 

AD, unless the AD specifies otherwise. The 

Director of the Federal Register approved the 

incorporation by reference (IBR) under 5 

U.S.C. 552(a) and 1 CFR part 51 of the 

following service information on the date 

specified: 

(i) Boeing Special Attention Service 

Bulletin 757–24–0105, Revision 5, dated July 

30, 2009, approved for IBR April 4, 2012. 

(ii) Boeing Special Attention Service 

Bulletin 757–24–0106, Revision 5, dated July 

30, 2009, approved for IBR April 4, 2012. 

(2) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Data & Services 

Management, P.O. Box 3707, MC 2H–65, 

Seattle, Washington 98124–2207; phone: 

206–544–5000, extension 1; fax: 206–766– 

5680; email: me.boecom@boeing.com; 

Internet https://www.myboeingfleet.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 an NARA facility, 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 January 

18, 2012. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2012–4428 Filed 2–28–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0030; Directorate 

Identifier 2009–NM–135–AD; Amendment 

39–16940; AD 2012–02–17] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for all 

Model 757 airplanes. This AD was 

prompted reports that several operators 

have found cracking in the front spar 

lower chord at the fastener locations 

common to the side link support fitting 

at wing station (WS) 292. This AD 

requires repetitive inspections for 

corrosion and cracking in this area, and 

corrective actions if necessary. We are 

issuing this AD to detect and correct 

such corrosion and cracking, which, if 

not corrected, could grow and result in 

structural failure of the spar. 

DATES: This AD is effective April 4, 

2012. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of April 4, 2012. 

ADDRESSES: For service information 

identified in this AD, contact Boeing 

Commercial Airplanes, Attention: Data 

& Services Management, P.O. Box 3707, 

MC 2H–65, Seattle, Washington 98124– 

2207; telephone 206–544–5000, 

extension 1; fax 206–766–5680; email 

me.boecom@boeing.com; Internet 

https://www.myboeingfleet.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. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Management Facility 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 address for the 

Docket Office (phone: 800–647–5527) is 

Document Management Facility, U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue SE., Washington, 

DC 20590. 

FOR FURTHER INFORMATION CONTACT: 

Nancy Marsh, Aerospace Engineer, 

Airframe Branch, ANM–120S, FAA, 

Seattle Aircraft Certification Office, 

1601 Lind Avenue SW., Renton, 

Washington 98057–3356; phone: 425– 

917–6440; fax: 425–917–6590; email: 

nancy.marsh@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an airworthiness 

directive (AD) that would apply to the 

specified products. That NPRM 

published in the Federal Register on 

January 22, 2010 (75 FR 3660). That 

NPRM proposed to require repetitive 

inspections for corrosion and cracking 

in the front spar lower chord at the 

fastener locations common to the side 

link support fitting at wing station (WS) 

292, and corrective actions if necessary. 

Actions Since Issuance of NPRM (75 FR 

3660, January 22, 2010) 

The NPRM (75 FR 3660, January 22, 

2010) referred to Boeing Special 

Attention Service Bulletin 757–57– 

0065, dated May 14, 2009, as the 

appropriate source of service 

information for accomplishing the 

actions. Since issuance of the NPRM, 

Boeing has issued Special Attention 

Service Bulletin 757–57–0065, Revision 

1, dated August 1, 2011. No more work 

is necessary for airplanes on which the 

original issue was used to accomplish 

the actions. Certain procedures 

specified in Revision 1 of this service 

bulletin have been clarified to provide 

additional instructions. 

We have revised this AD to refer to 

Boeing Special Attention Service 

Bulletin 757–57–0065, Revision 1, dated 

August 1, 2011, as the appropriate 

source of service information for 

accomplishing the actions. In addition, 

we added a new paragraph (i) to this AD 

(and reidentified subsequent paragraphs 

accordingly) to give credit for using 

Boeing Special Attention Service 

Bulletin 757–57–0065, dated May 14, 

2009, for accomplishing the actions. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. The 

following presents the comments 

received on the proposal and the FAA’s 

response to each comment. 

Supportive Comment 

Boeing concurred with the content of 

the NPRM (75 FR 3660, January 22, 

2010). 

Request To Include Instructions for 

Airplanes With Unmodified 

Configurations at the Side Link Fitting 

FedEx stated that Figures 2 and 3 of 

the Boeing Special Attention Service 

Bulletin 757–57–0065, dated May 14, 

2009, show a configuration of the 

airplane with the modification of the 

side link fitting accomplished. FedEx 

added that the procedures in that 

service information replace the side link 


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fitting and install additional fasteners 

attaching the fitting to the lower chord. 

FedEx noted that it is possible to 

perform the proposed inspections prior 

to incorporation of the service 

information; however, for airplanes on 

which the configuration may not match 

that provided in the service information, 

and on which the inspection has not 

been accomplished, the inspection steps 

provided may not match the 

configuration. 

We agree that Figures 2 and 3 of 

Boeing Special Attention Service 

Bulletin 757–57–0065, dated May 14, 

2009, do not include diagrams of 

different configurations of the side link 

fitting for airplanes that may currently 

be in service. However, as specified 

under ‘‘Actions Since Issuance of 

NPRM,’’ (75 FR 3660, January 22, 2010) 

Boeing has issued Special Attention 

Service Bulletin 757–57–0065, Revision 

1, dated August 1, 2011, which clarifies 

the steps in those figures. In addition, 

the number of fastener locations 

specified in the figures was incorrect 

and they now identify either three or 

four fastener locations; therefore, we 

have removed the number ‘‘four’’ 

preceding the phrase ‘‘fastener 

locations’’ throughout this AD. 

Request To Include FAA-Approved 

Repair Data 

Continental Airlines (CAL) asked that 

the NPRM (75 FR 3660, January 22, 

2010) include a requirement that any 

repairs must be approved either by the 

aircraft certification office (ACO) or an 

FAA-authorized Boeing Organization 

Designation Authority (ODA) using data 

that meets the certification basis of the 

airplane. FedEx stated that if cracks and 

corrosion are found, the airplane must 

be repaired prior to further flight; 

however, the NPRM and the referenced 

service information do not give repair 

instructions. FedEx asked that repair 

instructions be included in or referred 

to in the proposed AD requirements. 

FedEx also noted that in the event of 

findings, Boeing must be contacted for 

a repair prior to further flight. CAL also 

stated that if any corrosion or cracking 

is found, it is required to submit damage 

data to Boeing and await disposition 

and proper approval before 

accomplishing the repair and releasing 

the airplane. CAL added that this has 

the possibility of grounding airplanes 

beyond an acceptable time for 

operational requirements while the 

repair parts are obtained. 

We agree that if repair data were 

available as part of the service 

information, it would allow a quicker 

return to service for airplanes on which 

damage is found during the inspections. 

However, at this time the repair data are 

not currently available; therefore, the 

data cannot be included in the AD. We 

have made no change to the AD in this 

regard. 

Request To Include Repair and 

Corrosion Limitations 

CAL stated that the referenced service 

information does not include any 

specified limits for the repair, and 

added that corrosion limitations and 

related actions should be included for 

existing approved crack repairs. CAL 

noted that Boeing Special Attention 

Service Bulletin 757–57–0065, dated 

May 14, 2009, states that several repairs 

have been accomplished addressing 

crack lengths to 0.080 inch, and the 

service history table in the Background 

section of this service information lists 

six instances of cracking with preexisting, pre-approved repairs from 

Boeing. CAL added that all but one 

reported instance included oversizing of 

the discrepant holes and freeze plug 

installation. CAL believes that these 

existing repairs should be included 

either in the service information or the 

structural repair manual, and 

subsequently added as repair actions in 

the proposed AD prior to issuance. 

We do not agree that the corrosion 

limitations and related actions should 

be included in this AD for existing 

approved crack repairs. Boeing 

maintains information related to preexisting, pre-approved repairs. We have 

delegated authority to make findings 

concerning repairs related to this AD to 

the Boeing Commercial Airplanes ODA. 

Under the provisions of paragraph (j) of 

this AD, we will consider requests to 

accept the use of standard repairs 

developed by Boeing or the operator if 

sufficient data are submitted to 

substantiate that the repair would 

provide an acceptable level of safety. 

We have made no change to the AD in 

this regard. 

Request To Extend Compliance Time 

European Air Transport and DHL 

asked that we extend the interval for the 

repetitive inspections in the NPRM (75 

FR 3660, January 22, 2010) to the next 

4C check or 12,000 flight cycles from 

the date of the referenced service 

information, whichever occurs first. 

These commenters stated that they are 

already performing the inspection at the 

next 4C check and at intervals of 12,000 

flight cycles. These commenters added 

that the fuel tanks are only purged 

during a 4C check, which has an 

interval of 12,000 flight cycles, 24,000 

flight hours, and 72 months, whichever 

occurs first. The commenters noted that, 

if the proposed interval is maintained, 

the fuel tanks will need to be purged 

during a 1C or 2C check, and this will 

create additional downtime and costs 

for the inspection. 

We do not agree with the commenters’ 

request. The repetitive inspection 

interval was determined using a damage 

tolerance analysis and is appropriate to 

adequately address the unsafe 

condition. Under the provisions of 

paragraph (j) of this AD, operators may 

request approval of an alternative 

method of compliance (AMOC) if 

sufficient data are submitted to 

substantiate that the request would 

provide an acceptable level of safety. 

We have not changed the AD in this 

regard. 

Request To Supersede Related ADs 

FedEx asked that we supersede 

related AD 2003–18–05, Amendment 

39–13296 (68 FR 53496, September 11, 

2003); and AD 2004–12–07, 

Amendment 39–13666 (69 FR 33561, 

June 16, 2004). FedEx stated that the 

NPRM (75 FR 3660, January 22, 2010) 

should be approved as ancillary 

inspections to these ADs. FedEx added 

that this would maintain current AD 

maintenance documents and prevent 

future misinterpretation of the AD 

modification and inspection 

requirements. 

We agree that the subject inspections 

are in the same area as the modifications 

required by AD 2003–18–05 (68 FR 

53496, September 11, 2003) and AD 

2004–12–07 (69 FR 33561, June 16, 

2004). We also agree that accomplishing 

the inspections required by this AD 

could be cited as related actions to the 

actions included in AD 2003–18–05 and 

AD 2004–12–07. In the event that those 

ADs are superseded, this AD could be 

included as related rulemaking. 

The actions required by those ADs 

(mandating strut modifications) are 

complex and require compliance times 

which would not correlate with the 

compliance times in this AD. Therefore, 

we do not agree that this AD should 

supersede AD 2003–18–05 (68 FR 

53496, September 11, 2003) and AD 

2004–12–07 (69 FR 33561, June 16, 

2004). We have not changed the AD in 

this regard. 

Additional Change Made to This Final 

Rule 

We have revised the heading for and 

wording in paragraph (i) of this AD; this 

change has not changed the intent of 

that paragraph. 

Conclusion 

We reviewed the relevant data, 

considered the comments received, and 

determined that air safety and the 


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12172 Federal Register / Vol. 77, No. 40 / Wednesday, February 29, 2012 / Rules and Regulations 

public interest require adopting the AD 

with the changes described previously— 

and minor editorial changes. We have 

determined that these minor changes: 

• Are consistent with the intent that 

was proposed in the NPRM (75 FR 3660, 

January 22, 2010) for correcting the 

unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM (75 FR 3660, 

January 22, 2010). 

We also determined that these 

changes will not increase the economic 

burden on any operator or increase the 

scope of the AD. 

Explanation of Change to Costs of 

Compliance 

Since issuance of the NPRM (75 FR 

3660, January 22, 2010), we have 

increased the labor rate used in the 

Costs of Compliance from $80 per workhour to $85 per work-hour. The Costs of 

Compliance information, below, reflects 

this increase in the specified labor rate. 

Costs of Compliance 

We estimate that this AD affects 668 

airplanes of U.S. registry. We also 

estimate that it will take about 6 workhours per airplane to comply with this 

AD. The average labor rate is $85 per 

work-hour. Based on these figures, we 

estimate the cost of this AD to the U.S. 

operators to be $340,680 per inspection 

cycle, or $510 per airplane, per 

inspection cycle. 

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 

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 that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Is not a ‘‘significant rule’’ under 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979), 

(3) Will not affect intrastate aviation 

in Alaska, and 

(4) 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. 

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 airworthiness 

directive (AD): 

2012–02–17 The Boeing Company: 

Amendment 39–16940; Docket No. 

FAA–2010–0030; Directorate Identifier 

2009–NM–135–AD. 

(a) Effective Date 

This AD is effective April 4, 2012. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to all The Boeing 

Company Model 757–200, –200PF, –200CB, 

and –300 series airplanes, certificated in any 

category. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 57: Wings. 

(e) Unsafe Condition 

This AD results from reports of cracking at 

the front spar lower chord at the fastener 

locations common to the side link support 

fitting at wing station (WS) 292. The Federal 

Aviation Administration is issuing this AD to 

detect and correct such cracking and 

corrosion, which, if not corrected, could 

grow and result in structural failure of the 

spar. 

(f) Compliance 

You are responsible for having the actions 

required by this AD performed within the 

compliance times specified, unless the 

actions have already been done. 

(g) Inspect for Cracking and Corrosion 

At the later of the times in paragraphs 

(g)(1) and (g)(2) of this AD, do ultrasonic and 

general visual inspections for cracking and 

corrosion of the front spar lower chord at the 

fastener locations common to the side link 

support fitting at WS 292, in accordance with 

the Accomplishment Instructions of Boeing 

Special Attention Service Bulletin 757–57– 

0065, Revision 1, dated August 1, 2011. 

Where Boeing Special Attention Service 

Bulletin 757–57–0065, Revision 1, dated 

August 1, 2011, specifies a compliance time 

‘‘after the date on this service bulletin,’’ this 

AD requires compliance at the specified time 

after the effective date of this AD. Repeat the 

inspection thereafter at intervals not to 

exceed 12,000 flight cycles. 

(1) At the applicable time specified in 

paragraph 1.E., ‘‘Compliance,’’ of Boeing 

Special Attention Service Bulletin 757–57– 

0065, Revision 1, dated August 1, 2011. 

(2) Within 12,000 flight cycles after doing 

the modification of the nacelle and wing 

structure specified in Boeing Service Bulletin 

757–54–0034 or Boeing Service Bulletin 757– 

54–0035. 

(h) Corrective Action 

If any cracking or corrosion is found during 

any inspection required by this AD: Before 

further flight, repair the cracking or corrosion 

using a method approved in accordance with 

the procedures specified in paragraph (j) of 

this AD. 

(i) Credit for Previous Actions 

This paragraph provides credit for actions 

required by this AD if those actions were 

performed before the effective date of this AD 

using Boeing Special Attention Service 

Bulletin 757–57–0065, dated May 14, 2009. 

(j) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Seattle 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. In accordance with 14 CFR 

39.19, send your request to your principal 

inspector or local Flight Standards District 

Office, as appropriate. Send information to 

ATTN: Nancy Marsh, Aerospace Engineer, 

Airframe Branch, ANM–120S, FAA, Seattle 

Aircraft Certification Office, 1601 Lind 

Avenue SW., Renton, Washington 98057– 

3356; phone: 425–917–6440; fax: 425–917– 

6590; email: nancy.marsh@faa.gov. 

(2) 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. 

(3) An AMOC that provides an acceptable 

level of safety may be used for any repair 

required by this AD if it is approved by the 

Boeing Commercial Airplanes Organization 

Designation Authorization (ODA) that has 

been authorized by the Manager, Seattle 


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ACO, to make those findings. For a repair 

method to be approved, the repair must meet 

the certification basis of the airplane. 

(k) Material Incorporated by Reference 

(1) You must use the following service 

information to do the actions required by this 

AD, unless the AD specifies otherwise. The 

Director of the Federal Register approved the 

incorporation by reference (IBR) under 

5 U.S.C. 552(a) and 1 CFR part 51 of the 

following service information 

(i) You must use Boeing Special Attention 

Service Bulletin 757–57–0065, Revision 1, 

dated August 1, 2011; to do the actions 

required by this AD, unless the AD specifies 

otherwise. 

(2) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Data & Services 

Management, P.O. Box 3707, MC 2H–65, 

Seattle, WA 98124–2207; telephone 206– 

544–5000, extension 1; fax 206–766–5680; 

email me.boecom@boeing.com; Internet 

https://www.myboeingfleet.com. 

(3) You may review copies of the service 

information at the FAA, Transport Airplane 

Directorate, 1601 Lind Avenue SW., Renton, 

Washington 98057–3356. 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 an NARA facility, 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 January 

24, 2012. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2012–4429 Filed 2–28–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–1227; Directorate 

Identifier 2011–NM–100–AD; Amendment 

39–16957; AD 2012–04–02] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for all 

Bombardier, Inc. Model CL–600–2C10 

(Regional Jet Series 700, 701, & 702) 

airplanes; Model CL–600–2D15 

(Regional Jet Series 705) airplanes; and 

Model CL–600–2D24 (Regional Jet 

Series 900) airplanes. This AD was 

prompted by reports of aileron control 

stiffness. This AD requires revising the 

maintenance program to incorporate the 

discard task for outboard wing aileron 

pulleys. We are issuing this AD to 

prevent aileron control stiffness during 

flight, which could result in reduced 

controllability of the airplane. 

DATES: This AD becomes effective April 

4, 2012. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of April 4, 2012. 

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: 

Cesar Gomez, 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– 

7318; 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 November 8, 2011 

(76 FR 69161). That NPRM proposed to 

correct an unsafe condition for the 

specified products. The MCAI states: 

A number of reports of aileron control 

stiffness have been received on Bombardier 

Regional Jet aeroplanes. Bombardier has 

reviewed the current maintenance tasks for 

the aileron control system and determined 

that an additional maintenance task is 

required. 

This directive mandates revision of the 

approved maintenance schedule to 

incorporate the discard task for outboard 

wing aileron pulleys to prevent aileron 

control stiffness during flight which could 

result in reduced controllability of the 

aeroplane. 

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 

considered the comment received. The 

commenter, Air Line Pilots Association, 

International, supports the NPRM (76 

FR 69161, November 8, 2011). 

Conclusion 

We reviewed the available data, 

including the comment received, and 

determined that air safety and the 

public interest require adopting the AD 

as proposed, except for minor editorial 

changes. We have determined that these 

minor changes: 

• Are consistent with the intent that 

was proposed in the NPRM (76 FR 

69161, November 8, 2011) for correcting 

the unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM (76 FR 69161, 

November 8, 2011). 

Costs of Compliance 

We estimate that this AD will affect 

398 products of U.S. registry. We also 

estimate that it will take about 1 workhour per product to comply with the 

basic requirements of this AD. The 

average labor rate is $85 per work-hour. 

Based on these figures, we estimate the 

cost of this AD to the U.S. operators to 

be $33,830, or $85 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 proposed regulation: 

1. Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866; 


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