Document ID: FAA-2018-0161-0004
Agency: faa
Document Type: Rule
Title: Airworthiness Directives: Bombardier, Inc. Airplanes
Posted Date: 2018-10-18T04:00Z

[Federal Register Volume 83, Number 202 (Thursday, October 18, 2018)]
[Rules and Regulations]
[Pages 52756-52760]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2018-22137]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0161; Product Identifier 2017-NM-088-AD; Amendment 

39-19450; AD 2018-20-16]

RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc., Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of 

Transportation (DOT).

ACTION: Final rule.

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SUMMARY: We are superseding Airworthiness Directive (AD) 2013-11-12, 

which applied to certain Bombardier, Inc., Model BD-100-1A10 airplanes. 

AD 2013-11-12 required inspecting for the correct serial number of a 

certain hydraulic system accumulator, and replacing affected hydraulic 

system accumulators with new or serviceable accumulators. This AD 

expands the applicability and requires modifying or replacing certain 

hydraulic brake system accumulators. This AD also requires revising the 

maintenance or inspection program to add life limits for the 

accumulators. This AD was prompted by a determination that certain 

other hydraulic system accumulators must be modified or replaced and 

life limits must be added. We are issuing this AD to address the unsafe 

condition on these products.

DATES: This AD is effective November 23, 2018.

    The Director of the Federal Register approved the incorporation by 

reference of certain publications listed in this AD as of November 23, 

2018.

    The Director of the Federal Register approved the incorporation by 

reference of a certain other publication listed in this AD as of July 

9, 2013 (78 FR 33206, June 4, 2013).

ADDRESSES: For service information identified in this final rule, 

contact Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, 

Qu[eacute]bec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-

7401; email [email protected]; 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. It is also available on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-

0161.

[[Page 52757]]

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-

0161; 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 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: Cesar Gomez, Aerospace Engineer, 

Airframe and Mechanical Systems Section, FAA, New York ACO Branch, 1600 

Stewart Avenue, Suite 410, Westbury, NY 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 supersede AD 2013-11-12, Amendment 39-17472 (78 FR 33206, 

June 4, 2013) (``AD 2013-11-12''). AD 2013-11-12 applied to certain 

Bombardier, Inc., Model BD-100-1A10 airplanes. The NPRM published in 

the Federal Register on March 9, 2018 (83 FR 10415). The NPRM was 

prompted by a determination that certain other hydraulic system 

accumulators must be modified or replaced and life limits must be 

added. The NPRM proposed to continue to require inspecting for the 

correct serial number of a certain hydraulic system accumulator, and 

replacing affected hydraulic system accumulators with new or 

serviceable accumulators. The NPRM also proposed to expand the 

applicability and require modifying or replacing certain hydraulic 

brake system accumulators. The NPRM also proposed to require revising 

the maintenance or inspection program to add life limits for the 

accumulators. We are issuing this AD to prevent failure of a screw cap 

or end cap and loss of the related hydraulic system, which could result 

in damage to airplane structure and consequent reduced controllability 

of the airplane.

    Transport Canada Civil Aviation (TCCA), which is the aviation 

authority for Canada, has issued Canadian Airworthiness Directive CF-

2011-41R1, dated March 27, 2017 (referred to after this as the 

Mandatory Continuing Airworthiness Information, or ``the MCAI''), to 

correct an unsafe condition for certain Bombardier, Inc. Model BD-100-

1A10 airplanes. The MCAI states:

    Seven cases of on-ground hydraulic accumulator screw cap/end cap 

failure have been experienced on CL-600-2B19 aeroplanes, resulting 

in loss of the associated hydraulic system and high-energy impact 

damage to adjacent systems and structure. To date, the lowest number 

of flight cycles accumulated at the time of failure has been 6991.

    Although there have been no failures to date on any BD-100-1A10 

aeroplanes, accumulators similar to those installed on the CL-600-

2B19 are installed on the BD-100-1A10. The affected part numbers (P/

Ns) of the accumulators installed on BD-100-1A10 are 900095-1 

(Auxiliary Hydraulic System accumulator), 33-155500 (Inboard Brake 

accumulator), and 33-147500 (Outboard Brake accumulator).

    A detailed analysis of the calculated line of trajectory of a 

failed screw cap/end cap for the accumulators has been conducted, 

resulting in the identification of areas where systems and/or 

structural components could potentially be damaged. Although all of 

the failures on the CL-600-2B19 to date have occurred on the ground, 

an in-flight failure affecting such components could potentially 

have an adverse effect on the controllability of the aeroplane.

    Revision 1 of this [Canadian] AD is issued to mandate the 

[inspection and] replacement [of] Brake System Hydraulic 

accumulators that are not identified by the letter ``E'' or ``NAE'' 

after the serial number on the identification plate. Revision 1 also 

mandates the re-orientation of the brake accumulators P/N 33-147500 

and P/N 33-155500 and the insertion of three discard tasks in the 

Challenger 300 Time Limits/Maintenance Checks (TLMC) Manual.

    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-

0161.

Comments

    We gave the public the opportunity to participate in developing 

this final rule. The following presents the comment received on the 

NPRM and the FAA's response.

Request To Add Maintenance Manual

    NetJets Aviation stated that paragraph (n) of the proposed AD, 

which requires revising the maintenance or inspection program to 

incorporate certain life limit tasks, does not reference the Bombardier 

Challenger 350 Time Limits/Maintenance Check (TLMC) Manual. NetJets 

Aviation noted that only the Bombardier Challenger 300 TLMC Manual is 

referenced.

    We infer that the commenter is asking that the Bombardier 

Challenger 350 TLMC Manual be added as another source of service 

information for accomplishing the actions required by paragraph (n) of 

this AD. We agree with the commenter's request and have changed 

paragraph (n) accordingly. Although the tasks identified in the 

Bombardier Challenger 300 TLMC Manual also apply to Bombardier 

Challenger 350 airplanes, we have included the Bombardier Challenger 

350 TLMC in this AD for clarity.

Conclusion

    We reviewed the relevant data, considered the comment received, and 

determined that air safety and the public interest require adopting 

this final rule with the change 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 addressing the unsafe condition; and

     Do not add any additional burden upon the public than was 

already proposed in the NPRM.

    We also determined that this change will not increase the economic 

burden on any operator or increase the scope of this final rule.

Related Service Information Under 1 CFR Part 51

    Bombardier has issued the following service information:

     Service Bulletin 100-32-20, Revision 02, dated April 14, 

2015, which describes procedures for modifying (e.g., re-orienting) the 

installation of the hydraulic brake accumulators.

     Service Bulletin 100-32-21, dated May 24, 2012, which 

describes procedures for replacing the hydraulic brake system 

accumulators.

     Task 29-21-13-101 Discard the Auxiliary Hydraulic System 

Accumulator, Part No. 900095-1, of Section 5-10-11 of Part 2, 

``Airworthiness Limitations,'' of Bombardier Challenger 300 BD-100 Time 

Limits/Maintenance Checks Manual, Revision 17, dated December 15, 2016; 

and Bombardier Challenger 350, BD-100 Time Limits/Maintenance Checks 

Manual, Revision 9, dated December 18, 2017, which describes procedures 

for removal and installation of the hydraulic brake system 

accumulators. These tasks are distinct since they apply to different 

airplane models.

     Task 32-43-37-101 Discard the Brake Accumulator, Part No. 

33-147500, of Section 5-10-11 of Part 2, ``Airworthiness Limitations,'' 

of Bombardier Challenger 300 BD-100 Time Limits/Maintenance Checks 

Manual, Revision 17, dated December 15, 2016; and Bombardier Challenger

[[Page 52758]]

350, BD-100 Time Limits/Maintenance Checks Manual, Revision 9, dated 

December 18, 2017, which describes procedures for removal and 

installation of the brake accumulators. These tasks are distinct since 

they apply to different airplane models.

     Task 32-44-05-101 Discard the Emergency/Parking Brake 

Accumulator, Part No. 33-155500, of Section 5-10-11 of Part 2, 

``Airworthiness Limitations,'' of Bombardier Challenger 300 BD-100 Time 

Limits/Maintenance Checks Manual, Revision 17, dated December 15, 2016; 

and Bombardier Challenger 350, BD-100 Time Limits/Maintenance Checks 

Manual, Revision 9, dated December 18, 2017, which describes procedures 

for removal and installation of the emergency parking brake 

accumulators. These tasks are distinct since they apply to different 

airplane models.

    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 187 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 to determine part        1 work-hour x $85 per  $0............................  $85...........................  $15,895.

 numbers (retained actions from AD   hour = $85.

 2013[dash]11[dash]12).

Modifying or replacing hydraulic    58 work-hours x $85    Up to $31,500.................  Up to $36,430.................  Up to $6,812,410.

 brake system accumulators (new      per hour = $4,930.

 actions).

--------------------------------------------------------------------------------------------------------------------------------------------------------

    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 per-airplane estimate. 

Therefore, we estimate the total cost per operator to be $7,650 (90 

work-hours x $85 per work-hour).

    We estimate the following costs to do any necessary replacements 

that will 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

----------------------------------------------------------------------------------------------------------------

                                                                                                     Cost per

                   Action                                 Labor cost                Parts cost        product

----------------------------------------------------------------------------------------------------------------

Hydraulic accumulator replacement..........  5 work-hours x $85 per hour = $340.          $4,510          $4,850

----------------------------------------------------------------------------------------------------------------

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

0

1. The authority citation for part 39 continues to read as follows:

    Authority:  49 U.S.C. 106(g), 40113, 44701.

Sec.  39.13   [Amended]

0

2. The FAA amends Sec.  39.13 by removing Airworthiness Directive (AD) 

2013-11-12, Amendment 39-17472 (78

[[Page 52759]]

FR 33206, June 4, 2013), and adding the following new AD:

2018-20-16 Bombardier, Inc.: Amendment 39-19450; Docket No. FAA-

2018-0161; Product Identifier 2017-NM-088-AD.

(a) Effective Date

    This AD is effective November 23, 2018.

(b) Affected ADs

    This AD replaces AD 2013-11-12, Amendment 39-17472 (78 FR 33206, 

June 4, 2013) (``AD 2013-11-12'').

(c) Applicability

    This AD applies to Bombardier, Inc., Model BD-100-1A10 

airplanes, certificated in any category, having serial numbers 20003 

through 20604 inclusive.

(d) Subject

    Air Transport Association (ATA) of America Code 29, Hydraulic 

Power.

(e) Reason

    This AD was prompted by reports of failure of a screw cap or end 

cap of the hydraulic system accumulator while on the ground, which 

resulted in loss of use of that hydraulic system and high-energy 

impact damage to adjacent systems and structures. We are issuing 

this AD to prevent failure of a screw cap or end cap and loss of the 

related hydraulic system, which could result in damage to airplane 

structure and consequent reduced controllability of the airplane.

(f) Compliance

    Comply with this AD within the compliance times specified, 

unless already done.

(g) Retained Inspection With No Changes

    This paragraph restates the requirements of paragraph (g) of AD 

2013-11-12 with no changes. For airplanes having serial numbers 

20003 through 20335 inclusive: At the applicable time specified in 

paragraph (g)(1), (g)(2), or (g)(3) of this AD: Inspect the 

identification plate on the hydraulic system accumulator having part 

number (P/N) 900095-1 to determine if an ``E'' is part of the suffix 

of the serial number stamped on the identification plate, as listed 

in paragraph 2.B. of the Accomplishment Instructions of Bombardier 

Service Bulletin 100-29-14, dated December 16, 2010. A review of 

airplane maintenance records is acceptable in lieu of this 

inspection if the suffix of the serial number can be conclusively 

determined from that review.

    (1) For an accumulator that has accumulated more than 3,150 

total flight cycles as of July 9, 2013 (the effective date of AD 

2013-11-12), inspect that accumulator within 350 flight cycles after 

July 9, 2013.

    (2) For an accumulator that has accumulated 3,150 or fewer total 

flight cycles as of July 9, 2013 (the effective date of AD 2013-11-

12), inspect that accumulator before it has accumulated 3,500 total 

flight cycles.

    (3) For an accumulator on which it is not possible to determine 

the total flight cycles accumulated as of July 9, 2013 (the 

effective date of AD 2013-11-12), inspect that accumulator within 

350 flight cycles after July 9, 2013.

(h) Retained Replacement With No Changes

    This paragraph restates the requirements of paragraph (h) of AD 

2013-11-12 with no changes. If, during the inspection required by 

paragraph (g) of this AD, any accumulator having P/N 900095-1 is 

found on which the letter ``E'' is not part of the suffix of the 

serial number on the identification plate: Before further flight, 

replace the accumulator with a new or serviceable accumulator, in 

accordance with paragraph 2.C. of the Accomplishment Instructions of 

Bombardier Service Bulletin 100-29-14, dated December 16, 2010.

(i) Retained Parts Installation Prohibition With No Changes

    This paragraph restates the requirements of paragraph (i) of AD 

2013-11-12 with no changes. For airplanes having serial numbers 

20003 through 20335 inclusive: As of July 9, 2013 (the effective 

date of AD 2013-11-12), no person may install on any airplane a 

hydraulic system accumulator having P/N 900095-1, on which the 

letter ``E'' is not part of the suffix of the serial number on the 

identification plate.

(j) New Requirement of This AD: Replacement of Brake System Hydraulic 

Accumulators

    For airplanes having serial numbers 20003 through 20347 

inclusive: At the applicable time specified in paragraph (j)(1), 

(j)(2), or (j)(3) of this AD, replace all brake system hydraulic 

accumulators having P/N 33-147500 or P/N 33-155500 that are not 

identified by the letter ``E'' or ``NAE'' after the serial number on 

the identification plate with an accumulator of the same part number 

that is identified by the letter ``E'' or ``NAE'' after the serial 

number. Do the replacement in accordance with the Accomplishment 

Instructions of Bombardier Service Bulletin 100-32-21, dated May 24, 

2012.

    (1) For an accumulator that has accumulated more than 4,700 

total flight cycles as of the effective date of this AD, inspect 

that accumulator within 300 flight cycles after the effective date 

of this AD.

    (2) For an accumulator that has accumulated 4,700 or fewer total 

flight cycles as of the effective date of this AD, inspect that 

accumulator before it has accumulated 5,000 total flight cycles.

    (3) For an accumulator on which it is not possible to determine 

the total flight cycles accumulated as of the effective date of this 

AD, inspect that accumulator within 300 flight cycles after the 

effective date of this AD.

(k) New Requirement of This AD: Additional Parts Installation 

Prohibition

    For airplanes having serial numbers 20003 through 20347 

inclusive: As of the effective date of this AD, no person may 

install on any airplane a hydraulic system accumulator having P/N 

33-147500 or P/N 33-155500, on which the letter ``E'' or ``NAE'' is 

not after the serial number on the identification plate.

(l) New Requirement of This AD: Modification of the Inboard and 

Outboard Brake Accumulators

    For airplanes having serial numbers 20003 through 20395 

inclusive: Within 1,600 flight hours or 14 months after the 

effective date of this AD, whichever occurs first, modify (re-

orient) the installation of the inboard and outboard brake 

accumulators, in accordance with the Accomplishment Instructions of 

Bombardier Service Bulletin 100-32-20, Revision 02, dated April 14, 

2015.

(m) Credit for Previous Actions

    This paragraph provides credit for the actions specified in 

paragraph (l) of this AD, if those actions were performed before the 

effective date of this AD using Bombardier Service Bulletin 100-32-

20, dated February 25, 2013; or Revision 01, dated March 5, 2015.

(n) New Requirement of This AD: Maintenance or Inspection Program 

Revision

    For airplanes having serial numbers 20003 through 20604 

inclusive: Within 30 days after the effective date of this AD, 

revise the maintenance or inspection program, as applicable, to 

incorporate life limit tasks 29-21-13-101, 32-43-37-101, and 32-44-

05-101 of Section 5-10-11 of Part 2, ``Airworthiness Limitations'', 

of Bombardier Challenger 300 BD-100 Time Limits/Maintenance Checks 

Manual, Revision 17, dated December 15, 2016; or Bombardier 

Challenger 350 BD-100 Time Limits/Maintenance Checks Manual, 

Revision 9, dated December 18, 2017, as applicable. The initial 

compliance time for the tasks is within the applicable time 

specified in that service information, or within 30 days after the 

effective date of this AD, whichever occurs later.

(o) No Alternative Actions and Intervals

    After the maintenance or inspection program has been revised as 

required by paragraph (n) of this AD, no alternative actions (e.g., 

inspections) or intervals may be used unless the actions or 

intervals are approved as an alternative method of compliance (AMOC) 

in accordance with the procedures specified in paragraph (p)(1) of 

this AD.

(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 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,

[[Page 52760]]

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.

(q) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 

(MCAI) Canadian Airworthiness Directive CF-2011-41R1, dated March 

27, 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-2018-0161.

    (2) For more information about this AD, contact Cesar Gomez, 

Aerospace Engineer, Airframe and Mechanical Systems Section, FAA, 

New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 

11590; telephone: 516-228-7318; 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 (r)(5) and (r)(6) of this AD.

(r) 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.

    (3) The following service information was approved for IBR on 

November 23, 2018.

    (i) Bombardier Service Bulletin 100-32-20, Revision 02, dated 

April 14, 2015.

    (ii) Bombardier Service Bulletin 100-32-21, dated May 24, 2012.

    (iii) Bombardier Challenger 300 BD-100 Time Limits/Maintenance 

Checks Manual, Revision 17, dated December 15, 2016, Part 2, 

Airworthiness Limitations, Section 5-10-11:

    (A) Task 29-21-13-101 Discard the Auxiliary Hydraulic System 

Accumulator, Part No. 900095-1;

    (B) Task 32-43-37-101 Discard the Brake Accumulator, Part No. 

33-147500;

    (C) Task 32-44-05-101 Discard the Emergency/Parking Brake 

Accumulator, Part No. 33-155500.

    (iv) Bombardier Challenger 350 BD-100 Time Limits/Maintenance 

Checks Manual, Revision 9, dated December 18, 2017, Part 2, 

Airworthiness Limitations, Section 5-10-11:

    (A) Task 29-21-13-101 Discard the Auxiliary Hydraulic System 

Accumulator, Part No. 900095-1;

    (B) Task 32-43-37-101 Discard the Brake Accumulator, Part No. 

33-147500;

    (C) Task 32-44-05-101 Discard the Emergency/Parking Brake 

Accumulator, Part No. 33-155500.

    (4) The following service information was approved for IBR on 

July 9, 2013 (78 FR 33206, June 4, 2013).

    (i) Bombardier Service Bulletin 100-29-14, dated December 16, 

2010.

    (ii) Reserved.

    (5) For service information identified in this AD, contact 

Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, 

Qu[eacute]bec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-

7401; email [email protected]; internet http://www.bombardier.com.

    (6) 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.

    (7) 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/ibr-locations.html.

    Issued in Des Moines, Washington, on September 25, 2018.

John P. Piccola,

Acting Director, System Oversight Division, Aircraft Certification 

Service.

[FR Doc. 2018-22137 Filed 10-17-18; 8:45 am]

 BILLING CODE 4910-13-P