Source: https://www.federalregister.gov/documents/2018/10/18/2018-22137/airworthiness-directives-bombardier-inc-airplanes
Timestamp: 2019-01-17 23:05:37
Document Index: 623909753

Matched Legal Cases: ['art 39', 'art 2', 'art 2', 'art 2', '§\u200939', 'art 2', 'art 2', 'art 2']

83 FR 52756
52756-52760 (5 pages)
Docket No. FAA-2018-0161
Product Identifier 2017-NM-088-AD
Amendment 39-19450
AD 2018-20-16
FAA-2018-0161
2017-NM-088-AD Bombardier, Inc., Model BD?100?1A10 airplanes
Request To Add Maintenance Manual
(g) Retained Inspection With No Changes
(h) Retained Replacement With No Changes
(i) Retained Parts Installation Prohibition With No Changes
(j) New Requirement of This AD: Replacement of Brake System Hydraulic Accumulators
(k) New Requirement of This AD: Additional Parts Installation Prohibition
(l) New Requirement of This AD: Modification of the Inboard and Outboard Brake Accumulators
(n) New Requirement of This AD: Maintenance or Inspection Program Revision
(o) No Alternative Actions and Intervals
https://www.federalregister.gov/d/2018-22137 https://www.federalregister.gov/d/2018-22137
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.
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).
For service information identified in this final rule, contact Bombardier, Inc., 400 Côte-Vertu Road West, Dorval, Québec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-7401; email thd.crj@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. It is also available on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-0161.Start Printed Page 52757
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.
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.
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:
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.
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.
We also determined that this change will not increase the economic burden on any operator or increase the scope of this final rule.
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 Start Printed Page 52758350, 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.
Inspection to determine part numbers (retained actions from AD 2013-11-12) 1 work-hour × $85 per hour = $85 $0 $85 $15,895.
Modifying or replacing hydraulic brake system accumulators (new actions) 58 work-hours × $85 per hour = $4,930 Up to $31,500 Up to $36,430 Up to $6,812,410.
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.
Hydraulic accumulator replacement 5 work-hours × $85 per hour = $340 $4,510 $4,850
2. The FAA amends § 39.13 by removing Airworthiness Directive (AD) 2013-11-12, Amendment 39-17472 (78 Start Printed Page 52759FR 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.
This AD replaces AD 2013-11-12, Amendment 39-17472 (78 FR 33206, June 4, 2013) (“AD 2013-11-12”).
This AD applies to Bombardier, Inc., Model BD-100-1A10 airplanes, certificated in any category, having serial numbers 20003 through 20604 inclusive.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
(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, Start Printed Page 52760FAA; 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.
(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.
(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.
(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:
(4) The following service information was approved for IBR on July 9, 2013 (78 FR 33206, June 4, 2013).
(5) For service information identified in this AD, contact Bombardier, Inc., 400 Côte-Vertu Road West, Dorval, Québec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-7401; email thd.crj@aero.bombardier.com; internet http://www.bombardier.com.
[FR Doc. 2018-22137 Filed 10-17-18; 8:45 am]