Source: https://www.federalregister.gov/documents/2002/08/12/02-19877/airworthiness-directives-bombardier-model-cl-600-2b19-series-airplanes
Timestamp: 2019-02-21 02:38:43
Document Index: 254773217

Matched Legal Cases: ['art 2', 'art 2', '§\u200921', 'art 2', '§\u200925', '§\u200943', 'art 2', 'art 51']

Docket No. 2002-NM-135-AD
Amendment 39-12841
AD 2002-16-02
Difference Between This AD and Service Information
https://www.federalregister.gov/d/02-19877 https://www.federalregister.gov/d/02-19877
This amendment adopts a new airworthiness directive (AD) that is applicable to all Bombardier Model CL-600-2B19 series airplanes. This action requires revising the Airworthiness Limitations section of the maintenance requirements manual to incorporate life limits for certain horizontal stabilizer trim actuators (HSTAs), and replacing the HSTAs with new or serviceable HSTAs. This action is necessary to prevent failure of key components of the HSTAs, which could result in loss of horizontal trim control and consequent reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
Submit comments in triplicate to the Federal Aviation Administration (FAA), Transport Airplane Directorate, ANM-114, Attention: Rules Docket No. 2002-NM-135-AD, 1601 Lind Avenue, SW., Renton, Washington 98055-4056. Comments may be inspected at this location between 9 a.m. and 3 p.m., Monday through Friday, except Federal holidays. Comments may be submitted via fax to (425) 227-1232. Comments may also be sent via the Internet using the following address: 9-anm-iarcomment@faa.gov. Comments sent via the Internet must contain “Docket No. 2002-NM-135-AD” in the subject line and need not be submitted in triplicate. Comments sent via fax or the Internet as attached electronic files must be formatted in Microsoft Word 97 for Windows or ASCII text.
Transport Canada Civil Aviation (TCCA), which is the airworthiness authority for Canada, recently notified the FAA that an unsafe condition may exist on all Bombardier Model CL-600-2B19 series airplanes. TCCA advises that endurance test results indicate that Appendix B—Airworthiness Limitations, Part 2, of the Canadair Regional Jet Maintenance Requirements Manual must be revised to incorporate life limits for certain horizontal stabilizer trim actuators (HSTAs), and replacement of those HSTAs to prevent failure of key components. Such failure, if not corrected, could result in loss of horizontal trim control and consequent reduced controllability of the airplane.
Bombardier has issued Canadair Regional Jet Temporary Revision (TR) 2B-816, dated November 28, 2001, which describes procedures for incorporating life limits for the HSTAs, Canadair part number (P/N) 601R92305-1 (vendor P/N 8396-2), and Canadair P/N 601R92305-3 (vendor P/N 8396-3), into Appendix B—Airworthiness Limitations, Part 2, of the Canadair Regional Jet Maintenance Requirements Manual. Accomplishment of the action specified in the TR is intended to adequately address the identified unsafe condition. TCCA classified this service information as mandatory and issued Canadian airworthiness directive CF-2002-20, dated March 20, 2002, in order to assure the continued airworthiness of these airplanes in Canada.
This airplane model is manufactured in Canada and is type certificated for operation in the United States under the provisions of § 21.29 of the Federal Start Printed Page 52395Aviation Regulations (14 CFR 21.29) and the applicable bilateral airworthiness agreement. Pursuant to this bilateral airworthiness agreement, TCCA has kept the FAA informed of the situation described above. The FAA has examined the findings of TCCA, reviewed all available information, and determined that AD action is necessary for products of this type design that are certificated for operation in the United States.
Since an unsafe condition has been identified that is likely to exist or develop on other airplanes of the same type design registered in the United States, this AD is being issued to prevent failure of key components of the HSTAs, which could result in loss of horizontal trim control and consequent reduced controllability of the airplane. This AD requires revising Appendix B—Airworthiness Limitations, Part 2, of the Canadair Regional Jet Maintenance Requirements Manual to incorporate life limits for certain HSTAs, and replacing the HSTAs with new or serviceable HSTAs. The actions are required to be accomplished per the service information described previously, except as discussed below.
Operators should note that the previously referenced Canadair airworthiness directive and TR do not include specific procedures for the replacement action. However, this AD requires replacement of the HSTAs with new or serviceable HSTAs per a method approved by the FAA.
In accordance with airworthiness standards requiring “damage tolerance assessments” for transport category airplanes [§ 25.571 of the Federal Aviation Regulations (14 CFR 25.571), and the Appendices referenced in that section], all products certificated to comply with that section must have Instructions for Continued Airworthiness (or, for some products, maintenance manuals) that include an Airworthiness Limitations Section (ALS). That section must set forth:
Compliance with the terms specified in the ALS is required by §§ 43.16 (for persons maintaining products) and 91.403 (for operators) of the Federal Aviation Regulations (14 CFR 43.16 and 91.403).
Commenters wishing the FAA to acknowledge receipt of their comments submitted in response to this rule must submit a self-addressed, stamped postcard on which the following statement is made: “Comments to Docket Number 2002-NM-135-AD.” The postcard will be date stamped and returned to the commenter.
The FAA has determined that this regulation is an emergency regulation that must be issued immediately to correct an unsafe condition in aircraft, and that it is not a “significant regulatory action” under Executive Order 12866. It has been determined further that this action involves an emergency regulation under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979). If it is determined that this emergency Start Printed Page 52396regulation otherwise would be significant under DOT Regulatory Policies and Procedures, a final regulatory evaluation will be prepared and placed in the Rules Docket. A copy of it, if filed, may be obtained from the Rules Docket at the location provided under the caption ADDRESSES.
2002-16-02 Bombardier, Inc. (Formerly Canadair): Amendment 39-12841. Docket 2002-NM-135-AD.
Applicability: All Model CL-600-2B19 series airplanes, certificated in any category.
To prevent failure of key components of the horizontal stabilizer trim actuators (HSTAs), which could result in loss of horizontal trim control and consequent reduced controllability of the airplane, accomplish the following:
(a) Within 14 days after the effective date of this AD, revise Appendix B—Airworthiness Limitations, Part 2, of the Canadair Regional Jet Maintenance Requirements Manual to include life limits for the HSTAs, Canadair part number (P/N) 601R92305-1 (vendor P/N 8396-2), and Canadair P/N 601R92305-3 (vendor P/N 8396-3), as specified in Canadair Regional Jet Temporary Revision (TR) 2B-816, dated November 28, 2001. This may be accomplished by inserting the TR into the specified section of the maintenance requirements manual.
(b) Prior to the accumulation of 19,200 flight hours or within 500 flight hours on the HSTAs, Canadair part number (P/N) 601R92305-1 (vendor P/N 8396-2) and Canadair P/N 601R92305-3 (vendor P/N 8396-3), after the effective date of this AD, whichever occurs later: Replace the HSTAs with new or serviceable HSTAs, per a method approved by the Manager, FAA, New York Aircraft Certification Office (ACO).
(c) Except as provided by paragraph (d) of this AD: After the replacement specified in paragraph (b) of this AD has been accomplished, no alternative replacement times may be approved for the life limits for the HSTAs, Canadair part number (P/N) 601R92305-1 (vendor P/N 8396-2) and Canadair P/N 601R92305-3 (vendor P/N 8396-3), as specified in Canadair Regional Jet TR 2B-816, dated November 28, 2001.
(f) The Airworthiness Limitations revision to the maintenance requirements manual required by paragraph (a) of this AD shall be done in accordance with Canadair Regional Jet Temporary Revision 2B-816, dated November 28, 2001. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087, Station Centre-ville, Montreal, Quebec H3C 3G9, Canada. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, New York Aircraft Certification Office, 10 Fifth Street, Third Floor, Valley Stream, New York; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC.
The subject of this AD is addressed in Canadian airworthiness directive CF-2002-20, dated March 20, 2002.
(g) This amendment becomes effective on August 27, 2002.
[FR Doc. 02-19877 Filed 8-9-02; 8:45 am]