55040 Federal Register / Vol. 82, No. 222 / Monday, November 20, 2017 / Rules and Regulations 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2017–0338; Product 

Identifier 2016–NM–153–AD; Amendment 

39–19103; AD 2017–23–09] 

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 certain 

Bombardier, Inc., Model CL–600–2A12 

(CL–601 Variant) and CL–600–2B16 

(CL–601–3A, CL–601–3R, and CL–604 

Variants) airplanes. This AD was 

prompted by a determination that the 

bushing holes on the engine mount rib 

might not conform to the engineering 

drawings and that certain inspections of 

the engine mount rib must be included 

in the airworthiness limitations section 

(ALS) of the Instructions for Continued 

Airworthiness (ICA). This AD requires 

revising the maintenance or inspection 

program to incorporate certain 

airworthiness limitation items (ALIs). 

We are issuing this AD to address the 

unsafe condition on these products. 

DATES: This AD is effective December 

26, 2017. 

ADDRESSES: For service information 

identified in this final rule, 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 

1–514–855–2999; 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, 1601 Lind Avenue 

SW., Renton, WA. For information on 

the availability of this material at the 

FAA, call 425–227–1221. It is also 

available on the Internet at http://

www.regulations.gov by searching for 

and locating Docket No. FAA–2017– 

0338. 

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–2017– 

0338; 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 street address for 

the Docket Office (telephone 800–647– 

5527) is Docket 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: Aziz 

Ahmed, Aerospace Engineer, Airframe 

and Mechanical Systems Section, New 

York Aircraft ACO Branch, FAA, 1600 

Stewart Avenue, Suite 410, Westbury, 

NY 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 by adding an AD that would 

apply to certain Bombardier, Inc., Model 

CL–600–2A12 (CL–601 Variant) and 

CL–600–2B16 (CL–601–3A, CL–601–3R, 

and CL–604 Variants) airplanes. The 

NPRM published in the Federal 

Register on June 14, 2017 (82 FR 27219) 

(‘‘the NPRM’’). The NPRM was 

prompted by a determination that the 

bushing holes on the engine mount rib 

might not conform to the engineering 

drawings and that certain inspections of 

the engine mount rib must be included 

in the ALS of the ICA. The NPRM 

proposed to require revising the 

maintenance or inspection program to 

incorporate certain ALIs. We are issuing 

this AD to detect and correct failure of 

an engine mount rib. Failure of an 

engine mount rib could compromise the 

structural integrity of the engine mount 

and could lead to subsequent 

detachment of an engine. 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued Canadian 

Airworthiness Directive CF–2015–09R1, 

dated June 29, 2015 (referred to after 

this as the Mandatory Continuing 

Airworthiness Information, or ‘‘the 

MCAI’’), to correct an unsafe condition 

for certain Bombardier, Inc., Model CL– 

600–2A12 (CL–601 Variant) and CL– 

600–2B16 (CL–601–3A, CL–601–3R, and 

CL–604 Variants) airplanes. The MCAI 

states: 

The aeroplane manufacturer has 

determined that the bushing holes on the 

engine mount rib may not conform to the 

engineering drawings. Non-conforming 

bushing holes could increase loading on 

adjacent fasteners, resulting in premature 

fatigue cracking of the engine mount rib. 

In addition, it was also discovered that the 

inspection requirements for the engine 

mount rib were not listed in the 

Airworthiness Limitations Section of the 

Instructions for Continued Airworthiness. 

Failure of the engine mount rib could 

compromise the structural integrity of the 

engine mount and could lead to subsequent 

detachment of an engine. 

A new Time Limits/Maintenance Checks 

(TLMC) Airworthiness Limitations (AWL) 

task is introduced to ensure that any fatigue 

cracking of the engine mount rib is detected 

and corrected. 

The original issue of this [Canadian] AD 

mandated the incorporation of a new TLMC 

AWL task [into the maintenance or 

inspection program, as applicable]. 

Revision 1 of this [Canadian] AD is issued 

to remove model CL–600–1A11 (600) 

aeroplanes from the Applicability section of 

the [Canadian] AD since this model was 

incorrectly included in the original issue. 

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–2017– 

0338. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. The 

following presents the comments 

received on the NPRM and the FAA’s 

response to each comment. 

Requests To Revise Applicability 

Bombardier, Inc. (Bombardier) and 

NetJets Inc. (NetJets) requested that we 

revise paragraph (c)(3) of the proposed 

AD. The commenters explained that the 

Applicability should specify Model CL– 

600–2B16 (CL–604 Variant) airplanes 

having serial numbers (S/Ns) 5301 

through 5665 inclusive, and S/Ns 5701 

through 5990 inclusive; instead of 

Model CL–600–2B16 (CL–604 Variant) 

airplanes, having S/Ns 5301 through 

5665 inclusive, and S/Ns 5701 and 

subsequent. 

Bombardier stated that ‘‘Challenger 

650’’ is a marketing designation for 

Model CL–600–2B16 (604 Variant) 

airplanes starting at S/N 6050, and 

‘‘Challenger 605’’ is a marketing 

designation for Model CL–600–2B16 

(604 Variant) airplanes having S/Ns 

5701 to 5990. Bombardier and NetJets 

stated that future Model CL–600–2B16 

(CL–604 Variant) airplanes having serial 

numbers subsequent to S/N 5990 do not 

require the proposed actions, explaining 

that task 54–50–00–103 (inspections of 

the engine mount rib) was first 

incorporated into the Time Limits/ 

Maintenance Checks (TLMC) manual for 

Challenger 650 airplanes. Therefore, 

Bombardier asserts that operators of 

Challenger 650 airplanes should not be 

required to comply with the AD. 

We agree with the commenters’ 

requests. We have coordinated with 

TCCA and have verified that Model CL– 


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Federal Register / Vol. 82, No. 222 / Monday, November 20, 2017 / Rules and Regulations 55041 

600–2B16 (CL–604 Variant) airplanes 

having serial numbers subsequent to S/ 

N 5990 should not be subject to the 

required actions. We have changed 

paragraph (c)(3) of this AD accordingly. 

Requests To Clarify Method of 

Compliance (MOC) for Maintenance/ 

Inspection Program Revision 

Bombardier requested that more 

details be provided on how to meet the 

intent of paragraph (g) of the proposed 

AD, which specifies contacting the FAA 

for a MOC for revising the maintenance 

or inspection program to incorporate 

maintenance tasks. Bombardier 

suggested that the AD should specify 

the revisions in which the tasks were 

incorporated into the TLMC manual. 

Bombardier also suggested that this 

would prevent operators with a proper 

TLMC from being subject to a future AD. 

Bombardier stated that the AD should 

specify the tasks to be incorporated in 

the maintenance schedule, in order to 

provide operators with a sufficient level 

of detail on the revisions to be made to 

their maintenance or inspection 

program. 

NetJets requested that we identify the 

specific tasks that are to be incorporated 

into the maintenance or inspection 

program. NetJets noted that the MCAI 

provides the specific task numbers. 

We partially agree. We agree that 

operators need to know which actions 

must be incorporated into their 

maintenance or inspection programs. 

Therefore, we have revised paragraph 

(g) of this AD to identify the actions that 

must be incorporated. 

We do not agree to identify specific 

TLMC revisions in this AD. The service 

information specified in Note 1 to 

paragraph (g) of this AD provides 

guidance on the required actions. 

However, to specify the service 

information in paragraph (g) of this AD 

would require it to be incorporated by 

reference in this AD. The service 

information identified in this AD does 

not meet the Office of the Federal 

Register’s criteria for materials 

incorporated by reference. Therefore, we 

have not changed this AD in this regard. 

Conclusion 

We reviewed the relevant data, 

considered the comments received, and 

determined that air safety and the 

public interest require adopting this 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 for 

correcting the unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM. 

We also determined that these 

changes will not increase the economic 

burden on any operator or increase the 

scope of this AD. 

Costs of Compliance 

We estimate that this AD affects 129 

airplanes of U.S. registry. We estimate 

the following costs to comply with this 

AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Revision of maintenance or inspection program.1 work-hour × $85 per hour = $85 ................. $0 $85 $10,965 

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 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 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 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. 

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): 

2017–23–09 Bombardier, Inc.: Amendment 

39–19103; Docket No. FAA–2017–0338; 

Product Identifier 2016–NM–153–AD. 

(a) Effective Date 

This AD is effective December 26, 2017. 

(b) Affected ADs 

None. 


sradovich on DSK3GMQ082PROD with RULES
55042 Federal Register / Vol. 82, No. 222 / Monday, November 20, 2017 / Rules and Regulations 

(c) Applicability 

This AD applies to the Bombardier, Inc., 

airplanes identified in paragraphs (c)(1), 

(c)(2), and (c)(3) of this AD, certificated in 

any category. 

(1) Bombardier, Inc., Model CL–600–2A12 

(CL–601) airplanes, having serial numbers (S/ 

Ns) 3001 through 3066 inclusive. 

(2) Bombardier, Inc., Model CL–600–2B16 

(CL–601–3A and CL–601–3R Variants) 

airplanes, having S/Ns 5001 through 5194 

inclusive. 

(3) Bombardier, Inc., Model CL–600–2B16 

(CL–604 Variant) airplanes having S/Ns 5301 

through 5665 inclusive, and S/Ns 5701 

through 5990 inclusive. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 05, Periodic inspections. 

(e) Reason 

This AD was prompted by a determination 

that the bushing holes on the engine mount 

rib may not conform to the engineering 

drawings and that certain inspections of the 

engine mount rib must be included in the 

airworthiness limitations section (ALS) of the 

Instructions for Continued Airworthiness 

(ICA). We are issuing this AD to detect and 

correct failure of an engine mount rib. Failure 

of an engine mount rib could compromise the 

structural integrity of the engine mount and 

could lead to subsequent detachment of an 

engine. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Maintenance or Inspection Program 

Revision 

Within 60 days after the effective date of 

this AD: Revise the maintenance or 

inspection program, as applicable, to 

incorporate inspections for fatigue cracking 

of the engine mount rib and corrective 

actions, as applicable, in accordance with a 

method approved by the Manager, New York 

ACO Branch, FAA. 

Note 1 to paragraph (g) of this AD: 

Guidance can be found in Tasks 54–10–00– 

106 and 54–50–00–103 of Chapter 5 of the 

Bombardier Time Limits/Maintenance 

Checks (TLMC) Manual PSP 601–5 (for 

Model CL–600–2A12 (CL–601 Variant) 

airplanes); Bombardier TLMC Manual PSP 

601A–5 (for CL–600–2B16 (CL–601–3A and 

CL–601–3R Variants) airplanes); Bombardier 

TLMC Manual CL–604 (for Model CL–600– 

2B16 (CL–604 Variant) airplanes, S/Ns 5301 

through 5665 inclusive); and Bombardier 

TLMC Manual CL–605 (for Model CL–600– 

2B16 (CL–604 Variant) airplanes, S/Ns 5701 

through 5990). 

(h) No Alternative Actions and/or Intervals 

After the maintenance or inspection 

program has been revised as required by 

paragraph (g) of this AD, no alternative 

actions (e.g., inspections) and/or intervals 

may be used, unless the actions and/or 

intervals are approved as an AMOC in 

accordance with the procedures specified in 

paragraph (i)(1) of this AD. 

(i) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(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 

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, NY 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. 

(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 Transport Canada Civil Aviation 

(TCCA); or Bombardier, Inc.’s TCCA Design 

Approval Organization (DAO). If approved by 

the DAO, the approval must include the 

DAO-authorized signature. 

(j) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) Canadian 

Airworthiness Directive CF–2015–09R1, 

dated June 29, 2015, 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–2017–0338. 

(2) For more information about this AD, 

contact Aziz Ahmed, Aerospace Engineer, 

Airframe and Mechanical Systems Section, 

New York Aircraft ACO Branch, FAA, 1600 

Stewart Avenue, Suite 410, Westbury, NY 

11590; telephone 516–228–7329; fax 516– 

794–5531. 

(k) Material Incorporated by Reference 

None. 

Issued in Renton, Washington, on 

November 7, 2017. 

Dionne Palermo, 

Acting Director, System Oversight Division, 

Aircraft Certification Service. 

[FR Doc. 2017–24737 Filed 11–17–17; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2017–0649; Airspace 

Docket No. 17–ASW–11] 

Establishment of Class E Airspace; 

Boothville, LA 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: This action establishes Class 

E airspace extending upward from 700 

feet above the surface at Boothville 

Heliport, Boothville, LA. Controlled 

airspace is necessary to accommodate 

new special instrument approach 

procedures developed at Boothville 

Heliport, for the safety and management 

of instrument flight rules (IFR) 

operations at the heliport. 

DATES: Effective 0901 UTC, February 1, 

2018. The Director of the Federal 

Register approves this incorporation by 

reference action under Title 1, Code of 

Federal Regulations, part 51, subject to 

the annual revision of FAA Order 

7400.11 and publication of conforming 

amendments. 

ADDRESSES: 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: 

Walter Tweedy, Federal Aviation 

Administration, Operations Support 

Group, Central Service Center, 10101 

Hillwood Parkway, Fort Worth, TX 

76177; telephone (817) 222–5900. 

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 


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