This section of the FEDERAL REGISTER

contains regulatory documents having general

applicability and legal effect, most of which

are keyed to and codified in the Code of

Federal Regulations, which is published under

50 titles pursuant to 44 U.S.C. 1510.

The Code of Federal Regulations is sold by

the Superintendent of Documents.

Rules and Regulations Federal Register

31643 

Vol. 83, No. 131 

Monday, July 9, 2018 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2018–0275; Product 

Identifier 2018–NM–011–AD; Amendment 

39–19323; AD 2018–14–03] 

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–600–2C10 

(Regional Jet Series 700, 701, & 702) 

airplanes; Model CL–600–2D15 

(Regional Jet Series 705) airplanes; 

Model CL–600–2D24 (Regional Jet 

Series 900) airplanes; and Model CL– 

600–2E25 (Regional Jet Series 1000) 

airplanes. This AD was prompted by 

reports indicating that corrosion was 

found on the main landing gear (MLG) 

retraction actuator brackets and their 

associated pins. This AD requires an 

inspection of the retraction actuator 

brackets, their associated pins and 

hardware, and the mating lugs on the 

MLG outer cylinder for any corrosion, 

and replacement if necessary. We are 

issuing this AD to address the unsafe 

condition on these products. 

DATES: This AD is effective August 13, 

2018. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of August 13, 2018. 

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 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. It is also available 

on the internet at http://

www.regulations.gov by searching for 

and locating Docket No. FAA–2018– 

0275. 

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– 

0275; or in person at Docket Operations 

between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

The AD docket contains this final rule, 

the regulatory evaluation, any 

comments received, and other 

information. The address for Docket 

Operations (phone: 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: 

Discussion 

We issued an NPRM to amend 14 CFR 

part 39 by adding an AD that would 

apply to certain Bombardier, Inc., Model 

CL–600–2C10 (Regional Jet Series 700, 

701, & 702) airplanes; Model CL–600– 

2D15 (Regional Jet Series 705) airplanes; 

Model CL–600–2D24 (Regional Jet 

Series 900) airplanes; and Model CL– 

600–2E25 (Regional Jet Series 1000) 

airplanes. The NPRM published in the 

Federal Register on April 13, 2018 (83 

FR 16015). The NPRM was prompted by 

reports indicating that corrosion was 

found on the MLG retraction actuator 

brackets and their associated pins. The 

NPRM proposed to require inspection of 

the retraction actuator brackets, their 

associated pins and hardware, and the 

mating lugs on the MLG outer cylinder 

for any corrosion, and replacement if 

necessary. 

We are issuing this AD to address 

undetected corrosion on the MLG 

retraction actuator brackets and their 

associated pins, which could lead to a 

MLG collapse. 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued Canadian AD 

CF–2017–34, dated October 19, 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–600–2C10 (Regional Jet 

Series 700, 701, & 702) airplanes; Model 

CL–600–2D15 (Regional Jet Series 705) 

airplanes; Model CL–600–2D24 

(Regional Jet Series 900) airplanes; and 

Model CL–600–2E25 (Regional Jet Series 

1000) airplanes. The MCAI states: 

There have been in-service reports of 

corrosion on the main landing gear (MLG) 

retraction actuator bracket and its associated 

pins. Bombardier’s investigation determined 

that the corrosion is the consequence of 

inadequate corrosion protection being 

applied during production. Undetected 

corrosion on the MLG retraction actuator 

bracket and its associated pins could result 

in a MLG collapse. 

This [Canadian] AD mandates the 

inspection of the MLG retraction actuator 

bracket, its associated pins and hardware, 

and the mating lugs on the MLG outer 

cylinder for corrosion. This [Canadian] AD 

also mandates the replacement of corroded 

MLG parts and the application of corrosion 

protection in order to mitigate the risk of 

MLG collapse. 

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– 

0275. 

Comments 

We gave the public the opportunity to 

participate in developing this final rule. 

We received no comments on the NPRM 

or on the determination of the cost to 

the public. 

Conclusion 

We reviewed the relevant data and 

determined that air safety and the 

public interest require adopting this 

final rule 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 for 

addressing the unsafe condition; and 


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31644 Federal Register / Vol. 83, No. 131 / Monday, July 9, 2018 / Rules and Regulations 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM. 

Related Service Information Under 1 

CFR part 51 

Bombardier has issued Service 

Bulletin 670BA–32–060, Revision B, 

dated November 10, 2017. The service 

information describes a detailed visual 

inspection of the retraction actuator 

brackets, their associated pins and 

hardware, and the mating lugs on the 

MLG outer cylinder for any corrosion, 

and replacement if necessary. 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. 

Costs of Compliance 

We estimate that this AD affects 541 

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 

Inspection ............................. 16 work-hours × $85 per hour = $1,360 ............................ $0 $1,360 $735,760 

We estimate the following costs to do 

any necessary replacements that would 

be required based on the results of the 

inspection. We have no way of 

determining the number of aircraft that 

might need these replacements: 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per product 

Replacement .......................... 1 work-hour × $85 per hour = $85 ...................................... Up to $75,790 ....................... Up to $75,875 

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 and associated appliances to 

the Director of the System Oversight 

Division. 

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 

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): 

2018–14–03 Bombardier, Inc.: Amendment 

39–19323; Docket No. FAA–2018–0275; 

Product Identifier 2018–NM–011–AD. 

(a) Effective Date 

This AD is effective August 13, 2018. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Bombardier, Inc., 

Model airplanes, certificated in any category, 

identified in paragraphs (c)(1), (c)(2), and 

(c)(3) of this AD. 

(1) Model CL–600–2C10 (Regional Jet 

Series 700, 701, & 702) airplanes, serial 

numbers 10002 and subsequent. 

(2) Model CL–600–2D15 (Regional Jet 

Series 705) airplanes and Model CL–600– 

2D24 (Regional Jet Series 900) airplanes, 

serial numbers 15001 and subsequent. 

(3) Model CL–600–2E25 (Regional Jet 

Series 1000) airplanes, serial numbers 19001 

and subsequent. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 32, Landing gear. 

(e) Reason 

This AD was prompted by reports 

indicating that corrosion was found on the 

main landing gear (MLG) retraction actuator 

brackets and their associated pins. We are 

issuing this AD to address undetected 

corrosion on the MLG retraction actuator 

brackets and their associated pins, which 

could lead to a MLG collapse. 


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Federal Register / Vol. 83, No. 131 / Monday, July 9, 2018 / Rules and Regulations 31645 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspection and Replacement 

For any MLG dressed shock strut assembly 

with part numbers and serial numbers 

specified in paragraph 1.A., ‘‘Effectivity,’’ of 

Bombardier Service Bulletin 670BA–32–060, 

Revision B, dated November 10, 2017, at the 

applicable compliance times specified in 

paragraphs (g)(1), (g)(2), or (g)(3) of this AD, 

do a detailed visual inspection of the 

retraction actuator brackets, their associated 

pins and hardware, and the mating lugs on 

the MLG outer cylinder for any corrosion, 

and do all applicable replacements, in 

accordance with the Accomplishment 

Instructions of Bombardier Service Bulletin 

670BA–32–060, Revision B, dated November 

10, 2017. Do all applicable replacements 

before further flight. 

(1) For any MLG dressed shock strut 

assembly that has accumulated less than 

10,000 total flight hours on the MLG dressed 

shock strut assembly and has been in service 

for less than 60 months since its first 

installation on an airplane: Within 6,600 

flight hours or 39 months, whichever occurs 

first, after the effective date of this AD. 

(2) For any MLG dressed shock strut 

assembly that has accumulated less than or 

equal to 14,000 total flight hours on the MLG 

dressed shock strut assembly, and has been 

in service for less than 84 months since its 

first installation on an airplane, and does not 

meet the criteria in paragraph (g)(1) of this 

AD: Within 4,400 flight hours or 26 months, 

whichever occurs first, after the effective date 

of this AD, but not to exceed 16,600 total 

flight hours on the MLG dressed shock strut 

assembly or 99 months since its first 

installation on an airplane, whichever occurs 

first. 

(3) For any MLG dressed shock strut 

assembly that has accumulated more than 

14,000 total flight hours on the MLG dressed 

shock strut assembly or 84 months or more 

since its first installation on an airplane: 

Within 2,600 flight hours or 15 months, 

whichever occurs first, after the effective date 

of this AD. 

(h) Parts Exempted From This AD 

For any MLG dressed shock strut assembly 

with part numbers and serial numbers 

specified in paragraph 1.A., ‘‘Effectivity,’’ of 

Bombardier Service Bulletin 670BA–32–060, 

Revision B, dated November 10, 2017: The 

actions specified in paragraph (g) of this AD 

are not required provided that the actions in 

paragraphs (h)(1), (h)(2), or (h)(3) of this AD 

have been done. 

(1) The actions in paragraphs (h)(1)(i), 

(h)(1)(ii), (h)(1)(iii), and (h)(1)(iv) of this AD, 

as applicable, have been done on the MLG 

dressed shock strut assembly since its entryinto-service date. 

(i) Airplane Maintenance Manual (AMM) 

Task 32–32–05–400–803, Installation of the 

Outboard MLG Retraction Actuator Bracket 

Pin, or equivalent task in Component 

Maintenance Manual (CMM) 32–11–05 (for 

Model CL–600–2C10 (Regional Jet Series 700, 

701, & 702) airplanes), or CMM 32–11–06 (for 

Model CL–600–2D15 (Regional Jet Series 

705) airplanes and Model CL–600–2D24 

(Regional Jet Series 900) airplanes), or CMM 

32–11–34 (for Model CL–600–2E25 (Regional 

Jet Series 1000) airplanes); and 

(ii) AMM Task 32–32–05–400–804, 

Installation of the Inboard MLG RetractionActuator Bracket Pin, or equivalent task in 

CMM 32–11–05 (for Model CL–600–2C10 

(Regional Jet Series 700, 701, & 702) 

airplanes), or CMM 32–11–06 (for Model CL– 

600–2D15 (Regional Jet Series 705) airplanes 

and Model CL–600–2D24 (Regional Jet Series 

900) airplanes), or CMM 32–11–34 (for Model 

CL–600–2E25 (Regional Jet Series 1000) 

airplanes); and 

(iii) AMM Task 32–32–05–400–805, 

Installation of the Inboard-MLG RetractionActuator Pin, or AMM Task 32–32–05–400– 

801, Installation of the MLG RetractionActuator, or AMM Task 32–11–05–400–801, 

Installation of the MLG Shock-Strut 

Assembly; and 

(iv) For 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 equipped with MLG auxiliary 

actuators: AMM Task 32–32–03–400–801, 

Installation of the MLG Auxiliary Actuator, 

or AMM Task 32–11–05–400–801, 

Installation of the MLG Shock-Strut 

Assembly. 

(2) AMM Task 32–32–05–400–806, 

Installation of the MLG Retraction-Actuator 

Bracket has been accomplished on the MLG 

dressed shock strut assembly since its entryinto-service date. 

(3) AMM Task 32–11–00–610–801, 

Restoration (Overhaul) of the MLG Assembly 

has been accomplished on the MLG dressed 

shock strut assembly since its entry-intoservice date. 

(i) Credit for Previous Actions 

This paragraph provides credit for actions 

required by paragraph (g) of this AD, if those 

actions were performed before the effective 

date of this AD using Bombardier Service 

Bulletin 670BA–32–060, dated May 2, 2017, 

or Bombardier Service Bulletin 670BA–32– 

060, Revision A, dated June 22, 2017. 

(j) 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. 

(k) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) Canadian 

AD CF–2017–34, dated October 19, 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–2018–0275. 

(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) Service information identified in this 

AD that is not incorporated by reference is 

available at the addresses specified in 

paragraphs (l)(3) and (l)(4) of this AD. 

(l) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless this AD specifies otherwise. 

(i) Bombardier Service Bulletin 670BA–32– 

060, Revision B, dated November 10, 2017. 

(ii) Reserved. 

(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 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. 

(4) 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. 

(5) You may view this 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/cfr/ibrlocations.html. 

Issued in Des Moines, Washington, on June 

26, 2018. 

Jeffrey E. Duven, 

Director, System Oversight Division, Aircraft 

Certification Service. 

[FR Doc. 2018–14501 Filed 7–6–18; 8:45 am] 

BILLING CODE 4910–13–P 


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