80 FR 20181 - Airworthiness Directives; Bombardier, Inc. Airplanes
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 80, Issue 72 (April 15, 2015)
Federal Aviation Administration
Federal Register Volume 80, Issue 72 (April 15, 2015)
| Page Range | 20181-20185 | |
| FR Document | 2015-08463 |
[Federal Register Volume 80, Number 72 (Wednesday, April 15, 2015)] [Proposed Rules] [Pages 20181-20185] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2015-08463] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2015-0827; Directorate Identifier 2014-NM-008-AD] RIN 2120-AA64 Airworthiness Directives; Bombardier, Inc. Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). ----------------------------------------------------------------------- SUMMARY: We propose to supersede Airworthiness Directive (AD) 2011-07- 10, for certain Bombardier, Inc. Model BD-100-1A10 (Challenger 300) airplanes. AD 2011-07-10 currently requires revising the Airworthiness Limitations section of the Instructions for Continued Airworthiness; doing detailed visual inspections; removing discrepant material; cleaning the surfaces of the valves, the plug of the sensing port, and the cabin pressure-sensing port plug; securing the insulation; installing a new safety valve, [[Page 20182]] and replacing certain cabin pressure-sensing port plugs. Since we issued AD 2011-07-10, we have received reports of in-flight loss of cabin pressurization that was attributed to partial blockage of a safety valve cabin pressure-sensing port in conjunction with a failed safety valve manometric capsule. This proposed AD would retain all requirements of AD 2011-07-10. This proposed AD would also require a detailed visual inspection of both safety valves and the surrounding area for foreign material, room temperature vulcanizing (RTV) silicone, contamination, foam on the bulkhead structure, tape or insulation, and loose material; and corrective actions if necessary. We are proposing this AD to detect and correct blockage of a safety valve cabin pressure-sensing port, which could result in loss of cabin pressure. DATES: We must receive comments on this proposed AD by June 1, 2015. ADDRESSES: You may send comments by any of the following methods:Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments. Fax: 202-493-2251. Mail: U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590. Hand Delivery: U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this proposed 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 thd.crj@aero.bombardier.com; Internet http://www.bombardier.com. You may view this referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425-227-1221. 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-2015- 0827; 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 proposed AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Operations office (telephone 800-647-5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Luke Walker, Aerospace Engineer, Airframe and Mechanical Systems Branch, ANE-171, FAA, NY Aircraft Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7363; fax 516-794-5531. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant data, views, or arguments about this proposed AD. Send your comments to an address listed under the ADDRESSES section. Include ``Docket No. FAA-2015-0827; Directorate Identifier 2014-NM-008-AD'' at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing date and may amend this proposed AD based on those comments. We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact we receive about this proposed AD. Discussion On March 21, 2011, we issued AD 2011-07-10, Amendment 39-16647 (76 FR 17758, March 31, 2011). AD 2011-07-10 requires actions intended to address an unsafe condition on certain Bombardier, Inc. Model BD-100- 1A10 (Challenger 300) airplanes. AD 2011-07-10 superseded AD 2010-10- 18, Amendment 39 16297 (75 FR 27406, May 17, 2010). Since we issued AD 2011-07-10, Amendment 39-16647 (76 FR 17758, March 31, 2011), we have received reports of in-flight loss of cabin pressurization that were attributed to partial blockage of a safety valve cabin pressure-sensing port in conjunction with a failed safety valve manometric capsule. Transport Canada Civil Aviation (TCCA), which is the aviation authority for Canada, has issued Canadian Airworthiness Directive CF- 2010-06R1, dated August 8, 2013 (referred to after this as the Mandatory Continuing Airworthiness Information, or ``the MCAI''), to correct an unsafe condition for the specified products. The MCAI states: Investigation of a high altitude loss of cabin pressurization on a BD-100-1A10 aeroplane determined that it was caused by a partial blockage of a safety valve cabin pressure-sensing port, in conjunction with a dormant failure/leakage of the safety valve manometric capsule. The blockage, caused by accumulation of lint/ dust on the grid of the port plug, did not allow sufficient airflow through the cabin pressure-sensing port to compensate for the rate of leakage from the manometric capsule, resulting in the opening of the safety valve. It was also determined that failure of the manometric capsule alone would not result in the opening of the safety valve. The original issue of this [Canadian] AD mandated a revision of the maintenance schedule, the cleaning of the safety valves, the removal of material from the area surrounding the safety valves and the modification of the safety valves with a gridless cabin pressure-sensing port plug. Since the original issue of this [Canadian] AD, there have been two additional reported events of in-flight loss of cabin pressurization that were attributed to partial blockage of a safety valve cabin pressure-sensing port in conjunction with a failed safety valve manometric capsule. Bombardier Aerospace has determined that aeroplanes with a particular interior installation require improved instructions to clean the safety valves and their surrounding area. In addition, Aircraft Maintenance Manual tasks have been updated to ensure that inspection of the safety valves and their surrounding is carried out after any maintenance action. Revision 1 of this [Canadian] AD is issued to mandate inspection and cleaning of the safety valves and their surrounding area on the affected aeroplanes. Corrective actions include removing foreign material, cleaning surfaces of the safety valve and bulkhead, installing a new safety valve, removing loose tape, and trimming insulation. 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-2015-0827. Related Service Information Under 1 CFR Part 51 Bombardier has issued Service Bulletin 100-25-21, Revision 02, dated July 25, 2013. The service information describes procedures for a detailed visual inspection of both safety valves and the surrounding area for foreign material, RTV silicone, contamination, foam on the bulkhead structure, tape or insulation, and loose material, and applicable corrective actions. The actions described in this service information are intended to correct the unsafe condition identified in the MCAI. This service information is reasonably available; see ADDRESSES for ways to access this service information. [[Page 20183]] FAA's Determination and Requirements of This Proposed AD This product has been approved by the aviation authority of another country, and is approved for operation in the United States. Pursuant to our bilateral agreement with the State of Design Authority, we have been notified of the unsafe condition described in the MCAI and service information referenced above. We are proposing this AD because we evaluated all pertinent information and determined an unsafe condition exists and is likely to exist or develop on other products of the same type design. This AD requires revisions to certain operator maintenance documents to include new actions (e.g., inspections). Compliance with these actions is required by 14 CFR 91.403(c). For airplanes that have been previously modified, altered, or repaired in the areas addressed by this AD, the operator may not be able to accomplish the actions described in the revisions. In this situation, to comply with 14 CFR 91.403(c), the operator must request approval for an alternative method of compliance according to paragraph (n)(1) of this AD. The request should include a description of changes to the required inspections that will ensure the continued operational safety of the airplane. Costs of Compliance We estimate that this proposed AD affects 67 airplanes of U.S. registry. The actions required by AD 2011-07-10, Amendment 39-16647 (76 FR 17758, March 31, 2011), and retained in this proposed AD take about 10 work-hours per product, at an average labor rate of $85 per work-hour. Required parts cost $0 per product. Based on these figures, the estimated cost of the actions that were required by AD 2011-07-10 is $850 per product. We also estimate that it would take about 4 work-hours per product to comply with the basic requirements of this proposed AD. The average labor rate is $85 per work-hour. Based on these figures, we estimate the cost of this proposed AD on U.S. operators to be $22,780, or $340 per product. According to the manufacturer, all of the costs of this proposed AD may be covered under warranty, thereby reducing the cost impact on affected individuals. We do not control warranty coverage for affected individuals. As a result, we have included all costs in our cost estimate. 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. Regulatory Findings We determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would 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 this proposed regulation: 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. The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 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 Directives (AD) 2011-07-10, Amendment 39-16647 (76 FR 17758, March 31, 2011), and adding the following new AD: Bombardier, Inc.: Docket No. FAA-2015-0827; Directorate Identifier 2014-NM-008-AD. (a) Comments Due Date We must receive comments by June 1, 2015. (b) Affected ADs This AD replaces AD 2011-07-10, Amendment 39-16647 (76 FR 17758, March 31, 2011). (c) Applicability This AD applies to Bombardier, Inc. Model BD-100-1A10 (Challenger 300) airplanes, certificated in any category, serial numbers 20001 through 20274. (d) Subject Air Transport Association (ATA) of America Code 25, Equipment/ Furnishings. (e) Reason This AD was prompted by reports of in-flight loss of cabin pressurization that were attributed to partial blockage of a safety valve cabin pressure-sensing port in conjunction with a failed safety valve manometric capsule. We are issuing this AD to detect and correct blockage of a safety valve cabin pressure-sensing port, which could result in loss of cabin pressure. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Retained Revision This paragraph restates the requirements of paragraph (g) of AD 2011-07-10, Amendment 39-16647 (76 FR 17758, March 31, 2011), with no changes. For all airplanes: Within 30 days after June 1, 2010 (the effective date of AD 2010-10-18, Amendment 39-16297 (75 FR 27406, May 17, 2010)), revise the Airworthiness Limitations section of the Instructions for Continued Airworthiness by incorporating Tasks 21-31-09-101 and 21-31-09-102 in the Bombardier Temporary Revision (TR) 5-2-53, dated October 1, 2009, to Section 5-10-40, ``Certification Maintenance Requirements,'' in Part 2 of Chapter 5 of Bombardier Challenger 300 BD-100 Time Limits/Maintenance Checks. (1) For the new tasks identified in Bombardier TR 5-2-53, dated October 1, 2009: For airplanes identified in the ``Phase-in'' section of Bombardier TR 5-2-53, dated October 1, 2009, the initial compliance with the new tasks must be carried out in accordance with the phase-in schedule detailed in Bombardier TR 5-2-53, dated October 1, 2009, except where that TR specifies a compliance time from the date of the TR, this AD requires compliance within the specified time after June 1, 2010 (the effective date of AD 2010-10- 18, Amendment 39-16297 (75 FR 27406, May 17, 2010)). [[Page 20184]] Thereafter, except as provided by paragraph (n)(1) of this AD, no alternative to the task intervals may be used. (2) When information in Bombardier TR 5-2-53, dated October 1, 2009, has been included in the general revisions of the applicable Airworthiness Limitations section, that TR may be removed from that Airworthiness Limitations section of the Instructions for Continued Airworthiness. (h) Retained Inspection, Removal, Cleaning, and Installation This paragraph restates the requirements of paragraph (h) of AD 2011-07-10, Amendment 39-16647 (76 FR 17758, March 31, 2011), with certain clarified compliance times. For airplanes having S/Ns 20003 through 20173 inclusive, 20176, and 20177: Within 50 flight hours after June 1, 2010 (the effective date of AD 2010-10-18, Amendment 39-16297 (75 FR 27406, May 17, 2010)), do a detailed visual inspection of the safety valves and surrounding areas for discrepant material (e.g., foreign material surrounding the safety valves, room temperature vulcanizing (RTV) sealant on safety valves, RTV excess on the bulkhead, tape near the safety valve opening, and, on certain airplanes, insulation near the safety valve opening, and foam in the area surrounding the safety valves) and a detailed visual inspection for contamination (e.g., RTV, dust, or lint) in the safety valve pressure ports, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 100-25-14, dated June 30, 2008 (for airplanes having S/Ns 20124, 20125, 20128, 20134, 20139, 20143, 20146, 20148 through 20173 inclusive, 20176, and 20177); or Bombardier Service Bulletin 100-25-21, dated June 30, 2008 (for airplanes having S/Ns 20003 through 20123 inclusive, 20126, 20127, 20129 to 20133 inclusive, 20135 to 20138 inclusive, 20140 through 20142 inclusive, 20144, 20145, and 20147). (1) If any discrepant material is found during the detailed visual inspection, before further flight, remove the discrepant material, clean the surfaces of the valves, and secure the insulation, as applicable, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 100-25-14, dated June 30, 2008 (for airplanes having S/Ns 20124, 20125, 20128, 20134, 20139, 20143, 20146, 20148 through 20173 inclusive, 20176, and 20177); or Bombardier Service Bulletin 100-25-21, dated June 30, 2008 (for airplanes having S/Ns 20003 through 20123 inclusive, 20126, 20127, 20129 through 20133 inclusive, 20135 through 20138 inclusive, 20140 through 20142 inclusive, 20144, 20145, and 20147). (2) If contamination (e.g., RTV, dust, or lint) is found on the safety valve pressure sensing ports, before further flight, do a detailed visual inspection of the outside and inside diameters of the pressure sensing port conduit for the presence of RTV; and before further flight do the actions specified in paragraph (h)(2)(i) and (h)(2)(ii) of this AD, as applicable; in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 100-25-14, dated June 30, 2008 (for airplanes having S/Ns 20124, 20125, 20128, 20134, 20139, 20143, 20146, 20148 through 20173 inclusive, 20176, and 20177); or Bombardier Service Bulletin 100-25- 21, dated June 30, 2008 (for airplanes having S/Ns 20003 through 20123 inclusive, 20126, 20127, 20129 through 20133 inclusive, 20135 through 20138 inclusive, 20140 through 20142 inclusive, 20144, 20145, and 20147). (i) If no RTV is found, clean the plug of the sensing port. (ii) If any RTV is found, install a new safety valve. (i) Retained Cleaning for Certain Airplanes This paragraph restates the requirements of paragraph (i) of AD 2011-07-10, Amendment 39-16647 (76 FR 17758, March 31, 2011), with no changes. For airplanes having S/Ns 20174, 20175, 20178 through 20189 inclusive, 20191 through 20228 inclusive, 20230 through 20232 inclusive, 20235, 20237, 20238, 20241, 20244, 20247, 20249 through 20251 inclusive, 20254, 20256 and 20259: Within 50 flight hours after June 1, 2010 (the effective date of AD 2010-10-18, Amendment 39-16297 (75 FR 27406, May 17, 2010)), clean the cabin pressure- sensing port plug in both safety valves, in accordance with Paragraph 2.B., ``Part A--Modification--Cleaning,'' of the Accomplishment Instructions of Bombardier Service Bulletin A100-21- 08, dated June 18, 2009. (j) Retained Cleaning for Certain Other Airplanes This paragraph restates the requirements of paragraph (j) of AD 2011-07-10, Amendment 39-16647 (76 FR 17758, March 31, 2011), with no changes. For airplanes having S/Ns 20003 through 20189 inclusive, 20191 through 20228 inclusive, 20230 through 20232 inclusive, 20235, 20237, 20238, 20241, 20244, 20247, 20249 through 20251 inclusive, 20254, 20256, and 20259: Within 50 flight hours after June 1, 2010 (the effective date of AD 2010-10-18, Amendment 39-16297 (75 FR 27406, May 17, 2010)), clean the cabin pressure-sensing port plug in both safety valves, in accordance with Paragraph 2.B., ``Part A-- Modification--Cleaning,'' of the Accomplishment Instructions of Bombardier Service Bulletin A100-21-08, dated June 18, 2009. Repeat the cleaning thereafter at intervals not to exceed 50 flight hours until the actions specified by paragraph (k) of this AD are completed. (k) Retained Replacement This paragraph restates the requirements of paragraph (k) of AD 2011-07-10, Amendment 39-16647 (76 FR 17758, March 31, 2011), with no changes. For airplanes having S/Ns 20003 through 20189 inclusive, 20191 through 20228 inclusive, 20230 through 20232 inclusive, 20235, 20237, 20238, 20241, 20244, 20247, 20249 through 20251 inclusive, 20254, 20256, and 20259: Within 12 months after May 5, 2011 (the effective date of AD 2011-07-10), replace the cabin pressure-sensing port plug having part number (P/N) 2844-060 in both safety valves with a new gridless plug having P/N 2844-19 and re-identify the safety valves, in accordance with Paragraph 2.C., ``Part B-- Modification--Replacement,'' of the Accomplishment Instructions of Bombardier Service Bulletin A100-21-08, dated June 18, 2009. Doing the actions in paragraph (k) of this AD terminates the repetitive cleanings required by paragraph (j) of this AD. (l) New Requirement of This AD: Inspection and Cleaning For airplanes having S/Ns 20003 through 20123 inclusive, 20126, 20127, 20129 through 20133 inclusive, 20135 through 20138 inclusive, 20140 through 20142 inclusive, 20144, 20145, and 20147: Within 500 flight hours or 15 months after the effective date of this AD, whichever occurs first, do a detailed visual inspection of both safety valves and the surrounding area for foreign material, RTV silicone, contamination, foam on the bulkhead structure, tape or insulation, and loose material, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 100-25- 21, Revision 02, dated July 25, 2013. Do all applicable corrective actions before further flight, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 100-25-21, Revision 02, dated July 25, 2013. (m) Credit for Previous Actions This paragraph provides credit for actions required by paragraph (l) of this AD, if those actions were performed before the effective date of this AD using Bombardier Service Bulletin 100-25-21, Revision 01, dated February 26, 2013, which is not incorporated by reference in this AD. (n) Other FAA AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, New York Aircraft Certification Office (ACO), ANE-170, 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 New York ACO, send it to ATTN: Program Manager, Continuing Operational Safety, FAA, New York ACO, 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. The AMOC approval letter must specifically reference this AD. (2) Contacting the Manufacturer: As of the effective date of this AD, 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, ANE-170, 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. (o) Related Information (1) Refer to Mandatory Continuing Airworthiness Information (MCAI) Canadian Airworthiness Directive CF-2010-06R1, dated August 8, 2013, for related information. [[Page 20185]] 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- 2015-0827. (2) 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 thd.crj@aero.bombardier.com; Internet http://www.bombardier.com. You may view this service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425-227-1221. Issued in Renton, Washington, on April 6, 2015. John P. Piccola, Jr., Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2015-08463 Filed 4-14-15; 8:45 am] BILLING CODE 4910-13-P
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(iii) If the minimum thickness of the wall the effective date of this AD, whichever approval of an AMOC provided the steps
is 0.130 inch or greater and less than 0.140 occurs first, replace the inboard actuator identified as RC can be done and the airplane
inch and the machining defect is not present, attach fitting of the outboard flap, in can be put back in a serviceable condition.
within 48 months or 3,000 flight cycles after accordance with Part 4 of the Any substitutions or changes to steps
the effective date of this AD, whichever Accomplishment Instructions of Boeing Alert identified as RC require approval of an
occurs first, replace the inboard actuator Service Bulletin 747–57A2343, Revision 1, AMOC.
attach fitting of the outboard flap, in dated June 23, 2014. (5) AMOCs approved for AD 2013–23–03,
accordance with Part 4 of the (iv) If a machining defect is or is not found Amendment 39–17658 (78 FR 68345,
Accomplishment Instructions of Boeing Alert and the minimum thickness of the wall is November 14, 2013) are approved as AMOCs
Service Bulletin 747–57A2343, Revision 1, less than 0.130 inch: Before further flight, for the corresponding provisions of this AD.
dated June 23, 2014. replace the inboard actuator attach fitting of
(iv) If the minimum thickness of the wall the outboard flap, in accordance with Part 4 (n) Related Information
is 0.130 inch or greater and less than 0.140 of the Accomplishment Instructions of (1) For more information about this AD,
inch and the machining defect is present, Boeing Alert Service Bulletin 747–57A2343, contact Nathan Weigand, Aerospace
before further flight, replace the inboard Revision 1, dated June 23, 2014. Engineer, Airframe Branch, ANM–120S,
actuator attach fitting of the outboard flap, in (2) Replace the inboard actuator attach FAA, Seattle Aircraft Certification Office,
accordance with Part 4 of the fitting of the outboard flap, in accordance 1601 Lind Avenue SW., Renton, WA 98057–
Accomplishment Instructions of Boeing Alert with Part 4 of the Accomplishment 3356; phone: 425–917–6428; fax: 425–917–
Service Bulletin 747–57A2343, Revision 1, Instructions of Boeing Alert Service Bulletin 6590; email: nathan.p.weigand@faa.gov.
dated June 23, 2014. 747–57A2343, Revision 1, dated June 23, (2) For service information identified in
(2) Replace the inboard actuator attach 2014. this AD, contact Boeing Commercial
fitting of the outboard flap, in accordance Airplanes, Attention: Data & Services
with Part 4 of the Accomplishment (l) Part Installation Limitation Management, P. O. Box 3707, MC 2H–65,
Instructions of Boeing Alert Service Bulletin As of the effective date of this AD, no Seattle, WA 98124–2207; telephone 206–
747–57A2343, Revision 1, dated June 23, actuator attach fitting having P/N 65B08564– 544–5000, extension 1; fax 206–766–5680;
2014. 7 that meets the requirements of CONDITION Internet https://www.myboeingfleet.com. You
5 or CONDITION 6 defined in Boeing Alert may view this referenced service information
(k) New Inspection or Replacement for
Service Bulletin 747–57A2343, dated at the FAA, Transport Airplane Directorate,
Certain Fittings That Were Previously
September 12, 2013, may be installed on any 1601 Lind Avenue SW., Renton, Washington.
Inspected
airplane unless the inspection specified in For information on the availability of this
For airplanes with any inboard actuator paragraph (k)(1) of this AD is done and the material at the FAA, call 425–227–1221.
attach fitting having P/N 65B08564–7 applicable actions in paragraphs (k)(1)(i),
installed and the fitting was inspected in Issued in Renton, Washington, on April 6,
(k)(1)(ii), (k)(1)(iii), and (k)(1)(iv) are done
accordance with Part 3 of the 2015.
within the applicable times specified in
Accomplishment Instructions of Boeing Alert paragraphs (k)(1)(i), (k)(1)(ii), (k)(1)(iii), and John P. Piccola, Jr.,
Service Bulletin 747–57A2343, dated (k)(1)(iv) of this AD. Acting Manager, Transport Airplane
September 12, 2013: Within 24 months after Directorate, Aircraft Certification Service.
the effective date of this AD, do the actions (m) Alternative Methods of Compliance
[FR Doc. 2015–08464 Filed 4–14–15; 8:45 am]
specified in paragraph (k)(1) or (k)(2) of this (AMOCs)
BILLING CODE 4910–13–P
AD. (1) The Manager, Seattle Aircraft
(1) Do a detailed inspection of the inner Certification Office (ACO), FAA, has the
conical section for machining defects only, in authority to approve AMOCs for this AD, if
accordance with Part 3 of the requested using the procedures found in 14 DEPARTMENT OF TRANSPORTATION
Accomplishment Instructions of Boeing Alert CFR 39.19. In accordance with 14 CFR 39.19,
Service Bulletin 747–57A2343, Revision 1, send your request to your principal inspector Federal Aviation Administration
dated June 23, 2014. or local Flight Standards District Office, as
(i) If any machining defect is found and the appropriate. If sending information directly 14 CFR Part 39
minimum thickness of the wall is 0.140 inch to the manager of the ACO, send it to the
[Docket No. FAA–2015–0827; Directorate
or greater: Before further flight, do the actions attention of the person identified in
Identifier 2014–NM–008–AD]
specified in paragraph (k)(1)(i)(A) or paragraph (n)(1) of this AD. Information may
(k)(1)(i)(B) of this AD. be emailed to: 9-ANM-Seattle-ACO-AMOC- RIN 2120–AA64
(A) Overhaul the inboard actuator attach Requests@faa.gov.
fitting of the outboard flap, in accordance (2) Before using any approved AMOC, Airworthiness Directives; Bombardier,
with Part 5 of the Accomplishment notify your appropriate principal inspector, Inc. Airplanes
Instructions of Boeing Alert Service Bulletin or lacking a principal inspector, the manager
747–57A2343, Revision 1, dated June 23, of the local flight standards district office/ AGENCY: Federal Aviation
2014. certificate holding district office. Administration (FAA), DOT.
(B) Replace the inboard actuator attach (3) An AMOC that provides an acceptable
ACTION: Notice of proposed rulemaking
fitting of the outboard flap, in accordance level of safety may be used for any repair
with Part 4 of the Accomplishment required by this AD if it is approved by the (NPRM).
Instructions of Boeing Alert Service Bulletin Boeing Commercial Airplanes Organization
747–57A2343, Revision 1, dated June 23, Designation Authorization (ODA) that has SUMMARY: We propose to supersede
2014. been authorized by the Manager, Seattle Airworthiness Directive (AD) 2011–07–
(ii) If any machining defect is found and ACO, to make those findings. For a repair 10, for certain Bombardier, Inc. Model
the minimum thickness of the wall is 0.130 method to be approved, the repair must meet BD–100–1A10 (Challenger 300)
inch or greater and less than 0.140 inch: the certification basis of the airplane, and the airplanes. AD 2011–07–10 currently
Before further flight, replace the inboard approval must specifically refer to this AD. requires revising the Airworthiness
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actuator attach fitting of the outboard flap, in (4) If any service information contains Limitations section of the Instructions
accordance with Part 4 of the steps that are identified as RC (Required for for Continued Airworthiness; doing
Accomplishment Instructions of Boeing Alert Compliance), those steps must be done to
detailed visual inspections; removing
Service Bulletin 747–57A2343, Revision 1, comply with this AD; any steps that are not
dated June 23, 2014. identified as RC are recommended. Those discrepant material; cleaning the
(iii) If no machining defect is found and steps that are not identified as RC may be surfaces of the valves, the plug of the
the minimum thickness of the wall is 0.130 deviated from using accepted methods in sensing port, and the cabin pressure-
inch or greater and less than 0.140 inch: accordance with the operator’s maintenance sensing port plug; securing the
Within 48 months or 3,000 flight cycles after or inspection program without obtaining insulation; installing a new safety valve,
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and replacing certain cabin pressure- received, and other information. The Investigation of a high altitude loss of
sensing port plugs. Since we issued AD street address for the Docket Operations cabin pressurization on a BD–100–1A10
2011–07–10, we have received reports office (telephone 800–647–5527) is in aeroplane determined that it was caused by
of in-flight loss of cabin pressurization the ADDRESSES section. Comments will a partial blockage of a safety valve cabin
pressure-sensing port, in conjunction with a
that was attributed to partial blockage of be available in the AD docket shortly dormant failure/leakage of the safety valve
a safety valve cabin pressure-sensing after receipt. manometric capsule. The blockage, caused by
port in conjunction with a failed safety FOR FURTHER INFORMATION CONTACT: accumulation of lint/dust on the grid of the
valve manometric capsule. This Luke Walker, Aerospace Engineer, port plug, did not allow sufficient airflow
proposed AD would retain all Airframe and Mechanical Systems through the cabin pressure-sensing port to
requirements of AD 2011–07–10. This Branch, ANE–171, FAA, NY Aircraft compensate for the rate of leakage from the
proposed AD would also require a Certification Office (ACO), 1600 Stewart manometric capsule, resulting in the opening
detailed visual inspection of both safety Avenue, Suite 410, Westbury, NY of the safety valve. It was also determined
valves and the surrounding area for that failure of the manometric capsule alone
11590; telephone 516–228–7363; fax
would not result in the opening of the safety
foreign material, room temperature 516–794–5531. valve.
vulcanizing (RTV) silicone, SUPPLEMENTARY INFORMATION: The original issue of this [Canadian] AD
contamination, foam on the bulkhead mandated a revision of the maintenance
structure, tape or insulation, and loose Comments Invited
schedule, the cleaning of the safety valves,
material; and corrective actions if We invite you to send any written the removal of material from the area
necessary. We are proposing this AD to relevant data, views, or arguments about surrounding the safety valves and the
detect and correct blockage of a safety this proposed AD. Send your comments modification of the safety valves with a
valve cabin pressure-sensing port, to an address listed under the gridless cabin pressure-sensing port plug.
which could result in loss of cabin ADDRESSES section. Include ‘‘Docket No. Since the original issue of this [Canadian]
FAA–2015–0827; Directorate Identifier AD, there have been two additional reported
pressure. events of in-flight loss of cabin pressurization
2014–NM–008–AD’’ at the beginning of
DATES: We must receive comments on that were attributed to partial blockage of a
your comments. We specifically invite safety valve cabin pressure-sensing port in
this proposed AD by June 1, 2015.
comments on the overall regulatory, conjunction with a failed safety valve
ADDRESSES: You may send comments by economic, environmental, and energy manometric capsule.
any of the following methods: aspects of this proposed AD. We will Bombardier Aerospace has determined that
• Federal eRulemaking Portal: Go to consider all comments received by the aeroplanes with a particular interior
http://www.regulations.gov. Follow the closing date and may amend this installation require improved instructions to
instructions for submitting comments. proposed AD based on those comments. clean the safety valves and their surrounding
• Fax: 202–493–2251. We will post all comments we area. In addition, Aircraft Maintenance
• Mail: U.S. Department of receive, without change, to http:// Manual tasks have been updated to ensure
Transportation, Docket Operations, M– www.regulations.gov, including any that inspection of the safety valves and their
30, West Building Ground Floor, Room surrounding is carried out after any
personal information you provide. We maintenance action.
W12–140, 1200 New Jersey Avenue SE., will also post a report summarizing each Revision 1 of this [Canadian] AD is issued
Washington, DC 20590. substantive verbal contact we receive to mandate inspection and cleaning of the
• Hand Delivery: U.S. Department of about this proposed AD. safety valves and their surrounding area on
Transportation, Docket Operations, M– the affected aeroplanes.
30, West Building Ground Floor, Room Discussion
W12–140, 1200 New Jersey Avenue SE., On March 21, 2011, we issued AD Corrective actions include removing
Washington, DC, between 9 a.m. and 5 2011–07–10, Amendment 39–16647 (76 foreign material, cleaning surfaces of the
p.m., Monday through Friday, except FR 17758, March 31, 2011). AD 2011– safety valve and bulkhead, installing a
Federal holidays. 07–10 requires actions intended to new safety valve, removing loose tape,
For service information identified in address an unsafe condition on certain and trimming insulation. You may
this proposed AD, contact Bombardier, Bombardier, Inc. Model BD–100–1A10 examine the MCAI in the AD docket on
Inc., 400 Côte-Vertu Road West, Dorval, (Challenger 300) airplanes. AD 2011– the Internet at http://
Québec H4S 1Y9, Canada; telephone 07–10 superseded AD 2010–10–18, www.regulations.gov by searching for
514–855–5000; fax 514–855–7401; email Amendment 39 16297 (75 FR 27406, and locating Docket No. FAA–2015–
thd.crj@aero.bombardier.com; Internet May 17, 2010). 0827.
http://www.bombardier.com. You may Since we issued AD 2011–07–10, Related Service Information Under 1
view this referenced service information Amendment 39–16647 (76 FR 17758, CFR Part 51
at the FAA, Transport Airplane March 31, 2011), we have received
Directorate, 1601 Lind Avenue SW., reports of in-flight loss of cabin Bombardier has issued Service
Renton, WA. For information on the pressurization that were attributed to Bulletin 100–25–21, Revision 02, dated
availability of this material at the FAA, partial blockage of a safety valve cabin July 25, 2013. The service information
call 425–227–1221. pressure-sensing port in conjunction describes procedures for a detailed
with a failed safety valve manometric visual inspection of both safety valves
Examining the AD Docket capsule. and the surrounding area for foreign
You may examine the AD docket on Transport Canada Civil Aviation material, RTV silicone, contamination,
the Internet at http:// (TCCA), which is the aviation authority foam on the bulkhead structure, tape or
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www.regulations.gov by searching for for Canada, has issued Canadian insulation, and loose material, and
and locating Docket No. FAA–2015– Airworthiness Directive CF–2010–06R1, applicable corrective actions. The
0827; or in person at the Docket dated August 8, 2013 (referred to after actions described in this service
Management Facility between 9 a.m. this as the Mandatory Continuing information are intended to correct the
and 5 p.m., Monday through Friday, Airworthiness Information, or ‘‘the unsafe condition identified in the
except Federal holidays. The AD docket MCAI’’), to correct an unsafe condition MCAI. This service information is
contains this proposed AD, the for the specified products. The MCAI reasonably available; see ADDRESSES for
regulatory evaluation, any comments states: ways to access this service information.
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FAA’s Determination and Requirements rules on aviation safety. Subtitle I, 2011–07–10, Amendment 39–16647 (76
of This Proposed AD section 106, describes the authority of FR 17758, March 31, 2011), and adding
This product has been approved by the FAA Administrator. ‘‘Subtitle VII: the following new AD:
the aviation authority of another Aviation Programs,’’ describes in more Bombardier, Inc.: Docket No. FAA–2015–
country, and is approved for operation detail the scope of the Agency’s 0827; Directorate Identifier 2014–NM–
in the United States. Pursuant to our authority. 008–AD.
bilateral agreement with the State of We are issuing this rulemaking under
the authority described in ‘‘Subtitle VII, (a) Comments Due Date
Design Authority, we have been notified
Part A, Subpart III, Section 44701: We must receive comments by June 1,
of the unsafe condition described in the
General requirements.’’ Under that 2015.
MCAI and service information
referenced above. We are proposing this section, Congress charges the FAA with (b) Affected ADs
AD because we evaluated all pertinent promoting safe flight of civil aircraft in This AD replaces AD 2011–07–10,
information and determined an unsafe air commerce by prescribing regulations Amendment 39–16647 (76 FR 17758, March
condition exists and is likely to exist or for practices, methods, and procedures 31, 2011).
develop on other products of the same the Administrator finds necessary for
(c) Applicability
type design. safety in air commerce. This regulation
This AD requires revisions to certain is within the scope of that authority This AD applies to Bombardier, Inc. Model
because it addresses an unsafe condition BD–100–1A10 (Challenger 300) airplanes,
operator maintenance documents to
that is likely to exist or develop on certificated in any category, serial numbers
include new actions (e.g., inspections). 20001 through 20274.
Compliance with these actions is products identified in this rulemaking
required by 14 CFR 91.403(c). For action. (d) Subject
airplanes that have been previously Regulatory Findings Air Transport Association (ATA) of
modified, altered, or repaired in the America Code 25, Equipment/Furnishings.
areas addressed by this AD, the operator We determined that this proposed AD
(e) Reason
may not be able to accomplish the would not have federalism implications
actions described in the revisions. In under Executive Order 13132. This This AD was prompted by reports of in-
proposed AD would not have a flight loss of cabin pressurization that were
this situation, to comply with 14 CFR
substantial direct effect on the States, on attributed to partial blockage of a safety valve
91.403(c), the operator must request cabin pressure-sensing port in conjunction
approval for an alternative method of the relationship between the national with a failed safety valve manometric
compliance according to paragraph Government and the States, or on the capsule. We are issuing this AD to detect and
(n)(1) of this AD. The request should distribution of power and correct blockage of a safety valve cabin
include a description of changes to the responsibilities among the various pressure-sensing port, which could result in
required inspections that will ensure the levels of government. loss of cabin pressure.
continued operational safety of the For the reasons discussed above, I
(f) Compliance
airplane. certify this proposed regulation:
1. Is not a ‘‘significant regulatory Comply with this AD within the
Costs of Compliance action’’ under Executive Order 12866; compliance times specified, unless already
We estimate that this proposed AD done.
2. Is not a ‘‘significant rule’’ under the
affects 67 airplanes of U.S. registry. DOT Regulatory Policies and Procedures (g) Retained Revision
The actions required by AD 2011–07– (44 FR 11034, February 26, 1979); This paragraph restates the requirements of
10, Amendment 39–16647 (76 FR 3. Will not affect intrastate aviation in paragraph (g) of AD 2011–07–10,
17758, March 31, 2011), and retained in Alaska; and Amendment 39–16647 (76 FR 17758, March
this proposed AD take about 10 work- 4. Will not have a significant 31, 2011), with no changes. For all airplanes:
hours per product, at an average labor economic impact, positive or negative, Within 30 days after June 1, 2010 (the
rate of $85 per work-hour. Required on a substantial number of small entities effective date of AD 2010–10–18,
parts cost $0 per product. Based on under the criteria of the Regulatory Amendment 39–16297 (75 FR 27406, May 17,
these figures, the estimated cost of the 2010)), revise the Airworthiness Limitations
Flexibility Act.
actions that were required by AD 2011– section of the Instructions for Continued
07–10 is $850 per product. List of Subjects in 14 CFR Part 39 Airworthiness by incorporating Tasks 21–31–
09–101 and 21–31–09–102 in the Bombardier
We also estimate that it would take Air transportation, Aircraft, Aviation Temporary Revision (TR) 5–2–53, dated
about 4 work-hours per product to safety, Incorporation by reference, October 1, 2009, to Section 5–10–40,
comply with the basic requirements of Safety. ‘‘Certification Maintenance Requirements,’’
this proposed AD. The average labor in Part 2 of Chapter 5 of Bombardier
rate is $85 per work-hour. Based on The Proposed Amendment
Challenger 300 BD–100 Time Limits/
these figures, we estimate the cost of Accordingly, under the authority Maintenance Checks.
this proposed AD on U.S. operators to delegated to me by the Administrator, (1) For the new tasks identified in
be $22,780, or $340 per product. the FAA proposes to amend 14 CFR part Bombardier TR 5–2–53, dated October 1,
According to the manufacturer, all of 39 as follows: 2009: For airplanes identified in the ‘‘Phase-
the costs of this proposed AD may be in’’ section of Bombardier TR 5–2–53, dated
covered under warranty, thereby PART 39—AIRWORTHINESS October 1, 2009, the initial compliance with
the new tasks must be carried out in
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reducing the cost impact on affected DIRECTIVES
accordance with the phase-in schedule
individuals. We do not control warranty detailed in Bombardier TR 5–2–53, dated
coverage for affected individuals. As a ■ 1. The authority citation for part 39
continues to read as follows: October 1, 2009, except where that TR
result, we have included all costs in our specifies a compliance time from the date of
cost estimate. Authority: 49 U.S.C. 106(g), 40113, 44701. the TR, this AD requires compliance within
the specified time after June 1, 2010 (the
Authority for This Rulemaking § 39.13 [Amended] effective date of AD 2010–10–18,
Title 49 of the United States Code ■ 2. The FAA amends § 39.13 by Amendment 39–16297 (75 FR 27406, May 17,
specifies the FAA’s authority to issue removing Airworthiness Directives (AD) 2010)).
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This MCAI may be found in the AD docket (202) 693–1648; OSHA does not require Office for assistance in locating docket
on the Internet at http://www.regulations.gov hard copies of these documents. submissions.
by searching for and locating Docket No. Commenters must submit lengthy
FAA–2015–0827. FOR FURTHER INFORMATION CONTACT:
attachments that supplement these Information regarding this Request for
(2) For service information identified in
this AD, contact Bombardier, Inc., 400 Côte-
documents (e.g., studies, journal Information is available from the
Vertu Road West, Dorval, Québec H4S 1Y9, articles), by the applicable deadline, to following sources:
Canada; telephone 514–855–5000; fax 514– the OSHA Docket Office, Technical Data Press inquiries: Contact Frank
855–7401; email thd.crj@ Center, Room N–2625, U.S. Department
Meilinger, Director, OSHA Office of
aero.bombardier.com; Internet http:// of Labor, 200 Constitution Avenue NW.,
Communications, Room N–3647, U.S.
www.bombardier.com. You may view this Washington, DC 20210. These
service information at the FAA, Transport
Department of Labor, 200 Constitution
attachments must clearly identify the
Airplane Directorate, 1601 Lind Avenue SW., Avenue NW., Washington, DC 20210;
commenter’s name, the date of
Renton, WA. For information on the email: meilinger.francis2@dol.gov;
submission, the title of this RFI
availability of this material at the FAA, call telephone: (202) 693–1999.
(Communication Tower Safety), and the
425–227–1221.
docket number (OSHA–2014–0018) so General and technical information:
Issued in Renton, Washington, on April 6, the Agency can attach them to the Contact Erin Patterson or Jessica Douma,
2015. appropriate facsimile submission. Office of Construction Standards and
John P. Piccola, Jr., Regular mail, express delivery, hand Guidance, OSHA Directorate of
Acting Manager, Transport Airplane (courier) delivery, or messenger service: Construction, Room N–3468, U.S.
Directorate, Aircraft Certification Service. Submit a copy of comments and any Department of Labor, 200 Constitution
[FR Doc. 2015–08463 Filed 4–14–15; 8:45 am] additional material (e.g., studies, journal Avenue NW., Washington, DC 20210;
BILLING CODE 4910–13–P articles) to the OSHA Docket Office, emails: Patterson.Erin@dol.gov or
Docket No. OSHA–2014–0018, Douma.Jessica@dol.gov; telephone:
Technical Data Center, Room N–2625, (202) 693–2020; fax: (202) 693–1689.
DEPARTMENT OF LABOR U.S. Department of Labor, 200 Copies of this Federal Register
Constitution Avenue NW., Washington, notice: Electronic copies are available at
Occupational Safety and Health DC 20210; telephone (202) 693–2350 http://www.regulations.gov. This
Administration (TTY number: (877) 889–5627). Note Federal Register notice, as well as news
that security procedures may releases and other relevant information,
29 CFR 1910, 1926 significantly delay the Agency’s receipt also are available at OSHA’s Web page
of comments and other written materials at http://www.osha.gov.
[Docket No. OSHA–2014–0018] sent by regular mail. Contact the OSHA SUPPLEMENTARY INFORMATION:
RIN 1218–AC90 Docket Office for information about
security procedures concerning delivery Table of Contents
Communication Tower Safety of materials by express delivery, hand I. Exhibits Referenced in This RFI
delivery, or messenger service. The II. Background
AGENCY: Occupational Safety and Health
hours of operation for the OSHA Docket A. Introduction
Administration (OSHA), Labor. B. Hazards and Incidents
Office are 8:15 a.m.—4:45 p.m., E.T.
ACTION: Request for Information (RFI). Instructions: All submissions must C. Training and Certification
include the Agency’s name (OSHA), the D. Applicable OSHA Standards
SUMMARY: OSHA is aware of employee E. Consensus Standards and State
title of this RFI (Communication Tower
safety risks in communication tower Standards
Safety), and the docket number (OSHA–
construction and maintenance activities III. Request for Data, Information, and
2014–0018). The Agency places all
and is requesting information from the Comments
submissions, including any personal IV. Authority and Signature
public on these risks. This RFI requests
information provided, in the public
information that will assist the Agency I. Exhibits Referenced in This RFI
docket without change; this information
in determining what steps, if any, it can
will be available online at http:// Documents referenced by OSHA in
take to prevent injuries and fatalities
www.regulations.gov. Therefore, the this request for information, other than
during tower work.
Agency cautions commenters about OSHA standards and Federal Register
DATES: Comments and other information submitting materials that they do not
must be submitted (postmarked, sent, or notices, are in Docket No. OSHA–2014–
want made available to the public or 0018 (Communication Tower Safety).
received) by June 15, 2015. All that contain personal information
submissions must bear a postmark or The docket is available at http://
(either about themselves or others) such www.regulations.gov, the Federal
provide other evidence of the as Social Security numbers, birth dates,
submission date. eRulemaking Portal. For additional
and medical data. information on submitting items to, or
ADDRESSES: Submit comments and Docket: To read or download
accessing items in, the docket, please
additional materials, identified by submissions or other material in the
refer to the Addresses section of this
Docket No. OSHA–2014–0018, using docket, go to: http://
RFI.
any of the following methods: www.regulations.gov, or to the OSHA
Electronically: Submit comments and Docket Office at the address above. II. Background
attachments electronically at http:// While the electronic docket at http://
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A. Introduction
www.regulations.gov, which is the www.regulations.gov lists documents in
Federal eRulemaking Portal. Follow the the docket, some information (e.g., Communication towers are tall
instructions online for making copyrighted material) is not publicly structures that carry antennas for
electronic submissions. available to read or download through wireless, cellular, radio, or broadcast
Facsimile: Commenters may fax this Web site. All submissions, television communications. There are
submissions, including attachments, including copyrighted material, are three common types of communication
that are no longer than 10 pages in available for inspection at the OSHA towers: free-standing or lattice towers,
length to the OSHA Docket Office at Docket Office. Contact the OSHA Docket guyed towers, and monopole towers.
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Document Created: 2015-12-18 11:13:20
Document Modified: 2015-12-18 11:13:20
| Category | Regulatory Information | |
| Collection | Federal Register | |
| sudoc Class | AE 2.7: GS 4.107: AE 2.106: | |
| Publisher | Office of the Federal Register, National Archives and Records Administration | |
| Section | Proposed Rules | |
| Action | Notice of proposed rulemaking (NPRM). | |
| Dates | We must receive comments on this proposed AD by June 1, 2015. | |
| Contact | Luke Walker, Aerospace Engineer, Airframe and Mechanical Systems Branch, ANE-171, FAA, NY Aircraft Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7363; fax 516-794-5531. | |
| FR Citation | 80 FR 20181 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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