46428 Federal Register / Vol. 83, No. 178 / Thursday, September 13, 2018 / Proposed Rules 

(d) Comments Due Date 

We must receive comments by November 

13, 2018. 

(e) Compliance 

You are responsible for performing each 

action required by this AD within the 

specified compliance time unless it has 

already been accomplished prior to that time. 

(f) Required Actions 

(1) Before further flight, and thereafter at 

intervals not to exceed 100 hours time-inservice, visually inspect the flange in the 

ribbed area for cracks using a 5-power or 

higher magnifying glass in accordance with 

paragraphs 2.A.1 and 2.A.2 of the 

Accomplishment Instructions in Airbus 

Helicopters Alert Service Bulletin No. ASB– 

MBB–BK 117–10–114, Revision 1, dated July 

28, 2017. 

(2) If a crack is found as a result of the 

inspections specified in paragraph (f)(1) of 

this AD, remove the cracked M/R mast and 

replace it with an airworthy M/R mast. 

(g) Credit for Previous Actions 

Actions accomplished before the effective 

date of this AD in accordance with the 

procedures specified in AD 97–26–03, dated 

December 16, 1997, are acceptable for 

compliance with the corresponding actions 

specified in paragraphs (f)(1) and (f)(2) of this 

AD. 

(h) Special Flight Permit 

A special flight permit will not be 

permitted. 

(i) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Safety Management 

Section, Rotorcraft Standards Branch, FAA, 

may approve AMOCs for this AD. Send your 

proposal to: Matt Fuller, Senior Aviation 

Safety Engineer, Safety Management Section, 

Rotorcraft Standards Branch, FAA, 10101 

Hillwood Pkwy., Fort Worth, TX 76177; 

telephone (817) 222–5110; email 9-ASWFTW-AMOC-Requests@faa.gov. 

(2) For operations conducted under a 14 

CFR part 119 operating certificate or under 

14 CFR part 91, subpart K, we suggest that 

you notify your principal inspector, or 

lacking a principal inspector, the manager of 

the local flight standards district office or 

certificate holding district office before 

operating any aircraft complying with this 

AD through an AMOC. 

(j) Additional Information 

(1) Airbus Helicopters Alert Service 

Bulletin No. ASB MBB–BK 117–10–114, 

dated August 27, 1997, which is not 

incorporated by reference, contains 

additional information about the subject of 

this AD. For service information identified in 

this AD, contact Airbus Helicopters, 2701 N. 

Forum Drive, Grand Prairie, TX 75052; 

telephone (972) 641–0000 or (800) 232–0323; 

fax (972) 641–3775; or at http://

www.helicopters.airbus.com/website/en/ref/ 

Technical-Support_73.html. You may review 

a copy of the service information at the FAA, 

Office of the Regional Counsel, Southwest 

Region, 10101 Hillwood Pkwy, Room 6N– 

321, Fort Worth, TX 76177. 

(2) The subject of this AD is addressed in 

European Aviation Safety Agency (EASA) AD 

No. 2017–0193, dated September 29, 2017. 

You may view the EASA AD on the internet 

at http://www.regulations.gov in the AD 

Docket. 

(k) Subject 

Joint Aircraft Service Component (JASC) 

Code: 6300, Main Rotor Drive System. 

Issued in Fort Worth, Texas, on August 29, 

2018. 

Scott A. Horn, 

Deputy Director for Regulatory Operations, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2018–19737 Filed 9–12–18; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2018–0794; Product 

Identifier 2017–NM–175–AD] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to supersede 

Airworthiness Directive (AD) 2012–25– 

02, which applies to certain 

Bombardier, Inc. Model CL–600–2B19 

(Regional Jet Series 100 & 440) 

airplanes. AD 2012–25–02 requires 

revising the airworthiness limitations 

section (AWL) of the instructions for 

continued airworthiness (ICA) of the 

maintenance requirements manual by 

incorporating new procedures for 

repetitive inspections for cracking of the 

rear pressure bulkhead (RPB). AD 2012– 

25–02 also requires revising the 

maintenance program to incorporate a 

revised task which requires an 

improved non-destructive inspection 

procedure. Since we issued AD 2012– 

25–02, additional in-service crack 

findings resulted in the development of 

a structural modification to the RPB. 

This proposed AD would mandate 

modification of the RPB and would add 

repetitive inspections for cracking of the 

RPB web, which would terminate 

certain actions in this proposed AD. We 

are proposing this AD to address the 

unsafe condition on these products. 

DATES: We must receive comments on 

this proposed AD by October 29, 2018. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, 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: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this NPRM, contact Bombardier, Inc., 

400 Coˆte-Vertu Road West, Dorval, 

Que ́bec H4S 1Y9, Canada; Widebody 

Customer Response Center North 

America toll-free telephone 1–866–538– 

1247 or direct-dial telephone 514–855– 

5000; fax 514–855–7401; email ac.yul@

aero.bombardier.com; internet http://

www.bombardier.com. You may view 

this referenced service information at 

the FAA, Transport Standards Branch, 

2200 South 216th St., Des Moines, WA. 

For information on the availability of 

this material at the FAA, call 206–231– 

3195. 

Examining the AD Docket 

You may examine the AD docket on 

the internet at http://

www.regulations.gov by searching for 

and locating Docket No. FAA–2018– 

0794; 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 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. 

FOR FURTHER INFORMATION CONTACT: Aziz 

Ahmed, Aerospace Engineer, Airframe 

and Mechanical Systems Section, FAA, 

New York ACO Branch, 1600 Stewart 

Avenue, Suite 410, Westbury, NY 

11590; telephone 516–228–7329; fax 

516–794–5531. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposal. Send your comments to 

an address listed under the ADDRESSES

section. Include ‘‘Docket No. FAA– 

2018–0794; Product Identifier 2017– 

NM–175–AD’’ at the beginning of your 

comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 


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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 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 

We issued AD 2012–25–02, 

Amendment 39–17283 (77 FR 73902, 

December 12, 2012) (‘‘AD 2012–25– 

02’’), for certain Bombardier, Inc. Model 

CL–600–2B19 (Regional Jet Series 100 & 

440) airplanes. AD 2012–25–02 requires 

revising the AWL of the ICA of the 

Canadair Regional Jet Maintenance 

Requirements Manual by incorporating 

new procedures for repetitive detailed 

and special detailed inspections for 

cracking of the RPB. AD 2012–25–02 

also requires revising the maintenance 

program to incorporate a revised task 

specified in a certain temporary 

revision, which requires an improved 

non-destructive inspection procedure; 

and adds airplanes to the applicability. 

AD 2012–25–02 resulted from multiple 

reports of cracks on the forward face of 

the RPB web. We issued AD 2012–25– 

02 to detect and correct cracking in the 

RPB, which could result in reduced 

structural integrity and rapid 

decompression of the airplane. 

Actions Since AD 2012–25–02 Was 

Issued 

Since we issued AD 2012–25–02, 

additional in-service crack findings 

resulted in the development of a 

structural modification to the RPB. 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued Canadian 

Airworthiness Directive CF–2011–30R2, 

dated June 12, 2017 (referred to after 

this as the Mandatory Continuing 

Airworthiness Information, or ‘‘the 

MCAI’’), to correct an unsafe condition 

for certain Bombardier, Inc. Model CL– 

600–2B19 (Regional Jet Series 100 & 

440) airplanes. The MCAI states: 

Cracks on the forward face of the Rear 

Pressure Bulkhead (RPB) web have been 

discovered on three CL–600–2B19 aeroplanes 

in-service. 

A Temporary Revision has been made to 

Part 2 of the Maintenance Requirements 

Manual (MRM) to revise the existing AWL 

task by introducing an improved NonDestructive Inspection (NDI) procedure to 

ensure that fatigue cracking of the RPB is 

detected and corrected. 

The original issue of this [TCCA] AD 

[which corresponds to FAA AD 2012–25–02] 

mandated the incorporation of a new NDI 

procedure for AWL task number 53–61–153. 

Additional in-service findings have 

resulted in the issue of revision 1 of this 

[TCCA] AD, which mandates a structural 

modification to the rear pressure bulkhead 

with revised threshold and repeat inspection 

intervals. This modification is intended to 

preclude the onset of multiple site fatigue 

damage for the remaining service life of the 

aeroplane. If not corrected, a failure of the 

RPB could result in loss of structural 

integrity of the aeroplane. 

Revision 2 of this [TCCA] AD requires an 

inspection to be carried out prior to 

modification of the RPB. This revision also 

requires an additional modification to be 

completed on the RPB prior to terminating 

AWL task number 53–61–153. It also 

includes provisions to account for certain 

repairs as well as [alternative methods of 

compliance] AMOCs issued to earlier 

revisions of this [TCCA] AD. 

You may examine the MCAI in the 

AD docket on the internet at http://

www.regulations.gov by searching for 

and locating Docket No. FAA–2018– 

0794. 

Related Service Information Under 1 

CFR Part 51 

Bombardier, Inc., has issued the 

following service information. 

• Bombardier Repair Engineering 

Order (REO) 601R–53–61–1230, 

Revision F, dated November 7, 2011. 

This service information describes 

procedures for a repair to the pressure 

bulkhead web frame station (FS) 621.00, 

lintel installation. 

• Bombardier REO 601R–53–61– 

1240, Revision D, dated October 31, 

2016. This service information describes 

procedures for a repair and modification 

to FS 621.00 pressure bulkhead web. 

• Bombardier REO 601R–53–61– 

5828, Revision A, dated March 16, 2017. 

This service information describes 

procedures for a repair to FS 621.00 

pressure bulkhead web at left buttock 

line (LBL) 27.5. 

This service information is reasonably 

available because the interested parties 

have access to it through their normal 

course of business or by the means 

identified in the ADDRESSES section. 

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. 

This AD requires revisions to certain 

operator maintenance documents to 

include new actions (e.g., inspections). 

Compliance with these actions is 

required by 14 CFR 91.403(c). For 

airplanes that have been previously 

modified, altered, or repaired in the 

areas addressed by this proposed AD, 

the operator may not be able to 

accomplish the actions described in the 

revisions. In this situation, to comply 

with 14 CFR 91.403(c), the operator 

must request approval for an alternative 

method of compliance according to 

paragraph (p)(1) of this proposed AD. 

The request should include a 

description of changes to the required 

actions that will ensure the continued 

damage tolerance of the affected 

structure. 

Differences Between This Proposed AD 

and the Service Information 

The MCAI includes the following 

statement: ‘‘If it is not possible to 

complete all of the instructions in the 

SBs [service bulletins] . . . due to the 

configuration of the aircraft, contact 

Bombardier Inc. for approved 

instructions.’’ This issue is addressed in 

14 CFR 39.17, which states that ‘‘If a 

change in a product affects your ability 

to accomplish the actions required by 

the AD in any way, you must request 

FAA approval of an alternative method 

of compliance . . .’’ Since we do not 

currently have the authority to delegate 

AMOC approvals to foreign civil 

aviation authorities, the FAA is 

responsible for these approvals. 

Costs of Compliance 

We estimate that this proposed AD 

affects 457 airplanes of U.S. registry. We 

estimate the following costs to comply 

with this proposed AD: 


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ESTIMATED COSTS FOR REQUIRED ACTIONS

Labor cost Parts cost Cost per product Cost on U.S. operators 

Up to 917 work-hours × $85 per hour = Up to $77,945 Up to $6,000 ...................... Up to $83,945 .................... Up to $38,362,865. 

We have determined that revising the 

maintenance or inspection program 

takes an average of 90 work-hours per 

operator, although we recognize that 

this number may vary from operator to 

operator. In the past, we have estimated 

that this action takes 1 work-hour per 

airplane. Since operators incorporate 

maintenance or inspection program 

changes for their affected fleet(s), we 

have determined that a per-operator 

estimate is more accurate than a perairplane estimate. Therefore, we 

estimate the total cost per operator to be 

$7,650 (90 work-hours × $85 per workhour). 

We have received no definitive data 

that would enable us to provide cost 

estimates for the on-condition actions 

specified in this proposed AD. 

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. 

This proposed AD is issued in 

accordance with authority delegated by 

the Executive Director, Aircraft 

Certification Service, as authorized by 

FAA Order 8000.51C. In accordance 

with that order, issuance of ADs is 

normally a function of the Compliance 

and Airworthiness Division, but during 

this transition period, the Executive 

Director has delegated the authority to 

issue ADs applicable to transport 

category airplanes to the Director of the 

System Oversight Division. 

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), 

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. 

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 

removing Airworthiness Directive (AD) 

2012–25–02, Amendment 39–17283 (77 

FR 73902, December 12, 2012), and 

adding the following new AD: 

Bombardier Inc.: Docket No. FAA–2018– 

0794; Product Identifier 2017–NM–175– 

AD. 

(a) Comments Due Date 

We must receive comments by October 29, 

2018. 

(b) Affected ADs 

This AD replaces AD 2012–25–02, 

Amendment 39–17283 (77 FR 73902, 

December 12, 2012) (‘‘AD 2012–25–02’’). 

(c) Applicability 

This AD applies to Bombardier, Inc. Model 

CL–600–2B19 (Regional Jet Series 100 & 440) 

airplanes, certificated in any category, serial 

numbers 7002 through 8025 inclusive, 8030, 

and 8034. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 53, Fuselage. 

(e) Reason 

This AD was prompted by multiple reports 

of cracks on the forward face of the rear 

pressure bulkhead (RPB) web, and additional 

in-service crack findings which resulted in 

the development of a structural modification 

to the RPB. We are issuing this AD to address 

cracking in the RPB, which could result in 

reduced structural integrity and rapid 

decompression of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Retained Revision of the Maintenance 

Program With New Terminating Action 

This paragraph restates the requirements of 

paragraph (i) of AD 2012–25–02, with a new 

terminating action. Except for the airplane 

having serial number 7002, within 60 days 

after January 16, 2013 (the effective date of 

AD 2012–25–02): Revise the maintenance 

program by incorporating the revised 

inspection requirements specified in 

airworthiness limitation section (AWL) 53– 

61–153 of Bombardier temporary revision 

(TR) 2B–2187, dated June 22, 2011, to 

Appendix B-Airworthiness Limitations, of 

Part 2 of the Bombardier CL–600–2B19 

Maintenance Requirements Manual (MRM). 

The initial compliance times for the task are 

at the applicable time specified in paragraph 

(g)(1) or (g)(2) of this AD. Doing the actions 

required by paragraph (j) or (l) of this AD 

terminates the requirements of this 

paragraph, for the repaired area only. 

Accomplishment of the actions required by 

paragraph (m) of this AD terminates the 

requirements of this paragraph. 

(1) For airplanes on which the special 

detailed inspection specified in AWL 53–61– 

153 of Bombardier TR 2B–2187, dated June 

22, 2011; or Canadair Regional Jet TR 2B– 

2109, dated October 13, 2005; has not been 

done as of January 16, 2013 (the effective 

date of AD 2012–25–02): The initial 

compliance time for AWL 53–61–153 is at 

the applicable time specified in paragraph 

(g)(1)(i) or (g)(1)(ii) of this AD. 

(i) For airplanes that have accumulated 

10,500 total flight cycles or less as of January 

16, 2013: Before the accumulation of 12,000 

total flight cycles. 

(ii) For airplanes that have accumulated 

more than 10,500 total flight cycles as of 

January 16, 2013: Within 1,500 flight cycles 

after January 16, 2013 (the effective date of 

AD 2012–25–02). 

(2) For airplanes on which the special 

detailed inspection specified in AWL 53–61– 


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153 of Bombardier TR 2B–2187, dated June 

22, 2011; or Canadair Regional Jet TR 2B– 

2109, dated October 13, 2005; has been done 

as of January 16, 2013 (the effective date of 

AD 2012–25–02): The initial compliance time 

for AWL 53–61–153 is within 4,360 flight 

cycles after accomplishing the most recent 

special detailed inspection, or within 1,500 

flight cycles after accomplishing the most 

recent detailed inspection as specified in 

AWL 53–61–153 of Canadair Regional Jet TR 

2B–2109, dated October 13, 2005, whichever 

occurs later. 

(h) Retained No Alternative Actions or 

Intervals With New Exception 

This paragraph restates the requirements of 

paragraph (j) of AD 2012–25–02, with a new 

exception. Except as required by paragraphs 

(j)(3), (l)(2), and (m) of this AD, after 

accomplishing the revisions required by 

paragraph (g) of this AD, no alternative 

actions (e.g., inspections) or intervals may be 

used other than those specified in 

Bombardier TR 2B–2187, dated June 22, 

2011, to Appendix B-Airworthiness 

Limitations, of Part 2 of the Bombardier CL– 

600–2B19 MRM, unless the actions and 

intervals are approved as an alternative 

method of compliance (AMOC) in 

accordance with the procedures specified in 

paragraph (p)(1) of this AD. 

(i) Retained General Revision of the MRM 

With No Changes 

This paragraph restates the requirements of 

paragraph (k) of AD 2012–25–02, with no 

changes. The maintenance program revision 

required by paragraph (g) of this AD may be 

done by inserting a copy of Bombardier TR 

2B–2187, dated June 22, 2011, into Appendix 

B-Airworthiness Limitations, of Part 2 of the 

Bombardier CL–600–2B19 MRM. When this 

TR has been included in general revisions of 

the MRM, the general revisions may be 

inserted in the MRM, provided the relevant 

information in the general revision is 

identical to that in this TR. 

(j) New Requirements of This AD: 

Inspections, Modification, and Maintenance 

or Inspection Program Revision 

Accomplish the actions required by 

paragraphs (j)(1), (j)(2), and (j)(3) of this AD 

at the time specified, except as provided by 

paragraphs (l) and (m) of this AD. 

(1) At the applicable time specified in 

figure 1 to paragraph (j) of this AD: Do a 

nondestructive inspection for cracking of the 

forward face of the fuselage station (FS) 621 

pressure bulkhead, in accordance with AWL 

53–61–153 of Bombardier TR 2B–2187, dated 

June 22, 2011, to Appendix B-Airworthiness 

Limitations, of Part 2 of the Bombardier CL– 

600–2B19 MRM. 

(2) At the applicable time specified in 

figure 1 to paragraph (j) of this AD: Modify 

the RPB and do a nondestructive inspection 

for cracking of the FS 621 pressure bulkhead 

web, in accordance with Bombardier Repair 

Engineering Order (REO) 601R–53–61–1240, 

Revision D, dated October 31, 2016. 

(3) Before further flight after accomplishing 

the modification required by paragraph (j)(2) 

of this AD: Revise the maintenance or 

inspection program, as applicable, by 

incorporating the inspection requirements at 

the threshold and repetitive inspection times 

specified in the in-service deviation 

inspection requirements (SDIR) of 

Bombardier REO 601R–53–61–1240, Revision 

D, dated October 31, 2016. 

(k) Corrective Action 

(1) If any crack is found during any 

inspection required by paragraph (j)(2), (l)(1), 

or (m) of this AD: Before further flight, repair 

using a method approved by the Manager, 

New York ACO Branch, FAA; Transport 

Canada Civil Aviation (TCCA); or 

Bombardier, Inc.’s TCCA Design Approval 

Organization (DAO). If approved by the DAO, 

the approval must include the DAOauthorized signature. 

(2) If any crack is found during any 

inspection required by paragraph (j)(1) of this 

AD: Before further flight, repair in 

accordance with Bombardier REO 601R–53– 

61–1230, Revision F, dated November 7, 

2011, or Bombardier REO 601R–53–61–1240, 

Revision D, dated October 31, 2016, as 

applicable, or using a method approved by 

the Manager, New York ACO Branch, FAA; 

TCCA; or Bombardier, Inc.’s TCCA DAO. If 

approved by the DAO, the approval must 

include the DAO-authorized signature. 

(l) Alternative Actions for Certain Airplanes 

For airplanes on which the actions 

required by paragraphs (j)(1) and (j)(2) of this 

AD were performed before the effective date 

of this AD using the REOs identified in figure 

2 to paragraph (l) of this AD: In lieu of 

accomplishing the actions required by 

paragraph (j) of this AD, accomplish the 

actions required by paragraphs (l)(1) and 

(l)(2) of this AD within 6,000 flight cycles 

after the effective date of this AD. 

(1) Perform a special detailed inspection 

for cracking of Zone B of the RPB web, in 

accordance with Part B of Bombardier REO 

601R–53–61–1240, Revision D, dated October 

31, 2016. 

(2) Revise the maintenance or inspection 

program, as applicable, by incorporating the 

inspection requirements at the threshold and 

repetitive inspection times specified in Part 

B of the SDIR of Bombardier REO 601R–53– 

61–1240, Revision D, dated October 31, 2016. 

The inspection threshold is measured from 

the time of incorporation of the applicable 

REO specified in figure 2 to paragraph (l) of 

this AD. 

BILLING CODE 4910–13–P 


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Figure 2 to Paragraph (I) of this AD -

REOs Equivalent to Part A of REO 601R-53-61-1240 

Serial N urn ber 

7029 

7033 

7054 

7058 

7060 

7206 

7212 

7312 

7424 

7430 

7433 

7452 

7463 

7466 

7468 

7476 

Bombardier REO 

601R-53-61-3032, Revision D, dated May 6, 2014 

601R-53-61-3059, Revision D, dated November 1, 

2011 

601R-53-61-5220, Revision A, dated March 20, 2014 

601R-53-61-4391, dated February 6, 2012 

601R-53-61-4405, dated February 16, 2012 

601R-53-61-4398, Revision A, dated August 23, 

2016 

601R-53-61-5801, dated August 23, 2016 

601R-53-61-5480, dated May 22, 2015 

601R-53-61-4385, Revision A, dated August 25, 2016 

601R-53-61-4750, dated January 15, 2013 

601R-53-61-5137, Revision A, dated August 25, 2016 

601R-53-61-5738, dated June 23, 2016 

601R-53-61-5295, Revision A, dated July 2, 2014 

601R-53-61-4950, dated June 28, 2013 

601R-53-61-2039, Revision A, dated August 24, 2016 

601R-53-61-4821, Revision A, dated February 28, 

2013 

601R-53-61-4572, Revision C, dated February 27, 

2013 

601R-53-61-4584, Revision A, dated February 27, 

2013 

601R-53-61-4712, dated November 15, 2012 

601R-53-61-5369, dated October 14, 2014 

601R-53-61-4884, dated April25, 2013 

601R-53-61-5779, Revision A, dated August 16, 2016 

601R-53-61-5727, Revision B, dated June 8, 2016 
Federal Register / Vol. 83, No. 178 / Thursday, September 13, 2018 / Proposed Rules 46433 

BILLING CODE 4910–13–C 

(m) Alternative Actions for Airplane Serial 

Number 7610 

For any airplane having serial number 

7610: In lieu of accomplishing the actions 

required by paragraph (j) of this AD; within 

6,000 flight cycles after the effective date of 

this AD, do a reinforcement of K601R36010— 

A at left buttock line (LBL) 27.5 and perform 

a special detailed inspection for cracking of 

the FS 621 pressure bulkhead web at LBL 

27.5, in accordance with Bombardier REO 

601R–53–61–5828, Revision A, dated March 

16, 2017. Before further flight after 

accomplishing the reinforcement, or within 

60 days after the effective date of this AD, 

whichever occurs later: Revise the 

maintenance or inspection program, as 

applicable, by incorporating the inspection 

requirements that include threshold and 

repetitive inspection times as specified in the 

SDIR of Bombardier REO 601R–53–61–5828, 

Revision A, dated March 16, 2017. 

(n) No Alternative Actions or Intervals 

After the maintenance or inspection 

program has been revised as required by 

paragraph (j)(3), (l)(2), or (m) of this AD, no 

alternative actions (e.g., inspections) or 

intervals may be used unless the actions or 

intervals are approved as an AMOC in 

accordance with the procedures specified in 

paragraph (p)(1) of this AD. 

(o) Terminating Actions for Paragraph (g) of 

This AD 

(1) Accomplishment of the actions required 

by paragraph (j) or (l) of this AD terminates 

the requirements of paragraph (g) of this AD, 

for the repaired area only. 

(2) Accomplishment of the actions required 

by paragraph (m) of this AD terminates the 

requirements of paragraph (g) of this AD. 

(3) For airplanes on which the actions 

required by paragraph (j) or (l) of this AD 

have been done and on which the 

modification and inspection specified in REO 

601R–53–61–1230 Revision F, dated 

November 7, 2011, have been done and there 

were no inspection findings: The actions 

required by paragraph (g) of this AD are 

terminated. 

(p) Other FAA AD Provisions 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York ACO 

Branch, 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 


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46434 Federal Register / Vol. 83, No. 178 / Thursday, September 13, 2018 / Proposed Rules 

request to your principal inspector or local 

Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the certification office, 

send it to ATTN: Program Manager, 

Continuing Operational Safety, FAA, New 

York ACO Branch, 1600 Stewart Avenue, 

Suite 410, Westbury, New York 11590; 

telephone: (516) 228–7300; fax: (516) 794– 

5531. 

(i) 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. 

(ii) AMOCs approved previously for AD 

2012–25–02, are approved as AMOCs for the 

corresponding provisions in paragraphs (g), 

(k), and (l) of this AD. 

(2) Contacting the Manufacturer: For any 

requirement in this AD to obtain corrective 

actions from a manufacturer, the action must 

be accomplished using a method approved 

by the Manager, New York ACO Branch, 

FAA; or TCCA; or Bombardier Inc.’s TCCA 

DAO. If approved by the DAO, the approval 

must include the DAO-authorized signature. 

(q) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) Canadian 

Airworthiness Directive CF–2011–30R2, 

dated June 12, 2017, for related information. 

This MCAI may be found in the AD docket 

on the internet at http://www.regulations.gov 

by searching for and locating Docket No. 

FAA–2018–0794. 

(2) For more information about this AD, 

contact Aziz Ahmed, Aerospace Engineer, 

Airframe and Mechanical Systems Section, 

FAA, New York ACO Branch, 1600 Stewart 

Avenue, Suite 410, Westbury, NY 11590; 

telephone 516–228–7329; fax 516–794–5531. 

(3) For service information identified in 

this AD, contact Bombardier, Inc., 400 CoˆteVertu Road West, Dorval, Que ́bec H4S 1Y9, 

Canada; Widebody Customer Response 

Center North America toll-free telephone 

514–855–5000; fax 514–855–7401; email 

ac.yul@aero.bombardier.com; internet http:// 

www.bombardier.com; internet http://

www.bombardier.com. You may view this 

service information at the FAA, Transport 

Standards Branch, 2200 South 216th St., Des 

Moines, WA. For information on the 

availability of this material at the FAA, call 

206–231–3195. 

Issued in Des Moines, Washington, on 

August 24, 2018. 

James Cashdollar, 

Acting Director, System Oversight Division, 

Aircraft Certification Service. 

[FR Doc. 2018–19735 Filed 9–12–18; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2018–0577; Airspace 

Docket No. 18–AAL–9] 

RIN 2120–AA66 

Proposed Modification of Class E 

Airspace; Atqasuk, AK 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: This action proposes to 

modify Class E airspace extending 

upward from 1,200 feet above the 

surface at Atqasuk Edward Burnell Sr. 

Memorial Airport, Atqasuk, AK. This 

proposal would add exclusionary 

language to the legal description of the 

airport to ensure the safety and 

management of aircraft within the 

National Airspace System. Also, the 

geographic coordinates of the airport 

would be adjusted. 

DATES: Comments must be received on 

or before October 29, 2018. 

ADDRESSES: Send comments on this 

proposal to the U.S. Department of 

Transportation, Docket Operations, 1200 

New Jersey Avenue SE, West Building 

Ground Floor, Room W12–140, 

Washington, DC 20590; telephone: (800) 

647–5527, or (202) 366–9826. You must 

identify FAA Docket No. FAA–2018– 

0577; Airspace Docket No. 18–AAL–9, 

at the beginning of your comments. You 

may also submit comments through the 

internet at http://www.regulations.gov. 

FAA Order 7400.11B, Airspace 

Designations and Reporting Points, and 

subsequent amendments can be viewed 

online at http://www.faa.gov/air_traffic/ 

publications/. For further information, 

you can contact the Airspace Policy 

Group, Federal Aviation 

Administration, 800 Independence 

Avenue SW, Washington, DC 20591; 

telephone: (202) 267–8783. The Order is 

also available for inspection at the 

National Archives and Records 

Administration (NARA). For 

information on the availability of FAA 

Order 7400.11B at NARA, call (202) 

741–6030, or go to https://

www.archives.gov/federal-register/cfr/ 

ibr-locations.html. 

FAA Order 7400.11, Airspace 

Designations and Reporting Points, is 

published yearly and effective on 

September 15. 

FOR FURTHER INFORMATION CONTACT: 

Richard Roberts, Federal Aviation 

Administration, Operations Support 

Group, Western Service Center, 2200 S 

216th St., Des Moines, WA 98198–6547; 

telephone (206) 231–2244. 

SUPPLEMENTARY INFORMATION: 

Authority for This Rulemaking 

The FAA’s authority to issue rules 

regarding aviation safety is found in 

Title 49 of the United States Code. 

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. This rulemaking is 

promulgated under the authority 

described in Subtitle VII, Part A, 

Subpart I, Section 40103. Under that 

section, the FAA is charged with 

prescribing regulations to assign the use 

of airspace necessary to ensure the 

safety of aircraft and the efficient use of 

airspace. This regulation is within the 

scope of that authority as it would 

amend Class E airspace extending 

upward from 1,200 feet above the 

surface at Atqasuk Edward Burnell Sr. 

Memorial Airport, AK, to support IFR 

operations in standard instrument 

approach and departure procedures at 

the airport. 

Comments Invited 

Interested parties are invited to 

participate in this proposed rulemaking 

by submitting such written data, views, 

or arguments, as they may desire. 

Comments that provide the factual basis 

supporting the views and suggestions 

presented are particularly helpful in 

developing reasoned regulatory 

decisions on the proposal. Comments 

are specifically invited on the overall 

regulatory, aeronautical, economic, 

environmental, and energy-related 

aspects of the proposal. 

Communications should identify both 

docket numbers and be submitted in 

triplicate to the address listed above. 

Persons wishing the FAA to 

acknowledge receipt of their comments 

on this notice must submit with those 

comments a self-addressed, stamped 

postcard on which the following 

statement is made: ‘‘Comments to 

Docket No. FAA–2018–0577; Airspace 

Docket No. 18–AAL–9’’. The postcard 

will be date/time stamped and returned 

to the commenter. 

All communications received before 

the specified closing date for comments 

will be considered before taking action 

on the proposed rule. The proposal 

contained in this notice may be changed 

in light of the comments received. A 

report summarizing each substantive 

public contact with FAA personnel 

concerned with this rulemaking will be 

filed in the docket. 


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