81 FR 31844 - Airworthiness Directives; Airbus Airplanes
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 81, Issue 98 (May 20, 2016)
Federal Aviation Administration
Federal Register Volume 81, Issue 98 (May 20, 2016)
| Page Range | 31844-31848 | |
| FR Document | 2016-11575 |
[Federal Register Volume 81, Number 98 (Friday, May 20, 2016)] [Rules and Regulations] [Pages 31844-31848] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2016-11575] ======================================================================= ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2014-0006; Directorate Identifier 2013-NM-147-AD; Amendment 39-18519; AD 2016-10-08] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. ----------------------------------------------------------------------- SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A330-200 Freighter, A330-200, A330-300, A340-200, A340- 300, A340-500, and A340-600 series airplanes. This AD was prompted by the results of endurance qualification tests on the trimmable horizontal stabilizer actuator (THSA), which revealed a partial loss of the no-back brake (NBB) efficiency in specific load conditions. This AD requires inspecting certain THSAs to determine the number of total flight cycles the THSA has accumulated, and replacing the THSA if necessary. We are issuing this AD to detect and correct premature wear of the carbon friction disks on the NBB of the THSA. Such a condition could lead to reduced braking efficiency in certain load conditions and, in conjunction with the inability of the power gear train to keep the ball screw in its last commanded position, could result in uncommanded movements of the trimmable horizontal stabilizer (THS) and loss of control of the airplane. DATES: This AD is effective June 24, 2016. The Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD as of June 24, 2016. ADDRESSES: For service information identified in this final rule, contact Airbus SAS, Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France; telephone +33 5 61 93 36 96; fax +33 5 61 93 45 80; email [email protected]; Internet http://www.airbus.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. It is also available on the Internet [[Page 31845]] at http://www.regulations.gov by searching for and locating Docket No. FAA-2014-0006. 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-2014- 0006; 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 AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Office (telephone 800-647-5527) is Docket Management Facility, 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: Vladimir Ulyanov, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356; telephone 425-227-1138; fax 425-227-1149. SUPPLEMENTARY INFORMATION: Discussion We issued a supplemental notice of proposed rulemaking (SNPRM) to amend 14 CFR part 39 by adding an AD that would apply to all Airbus Model A330-200 Freighter, A330-200, A330-300, A340-200, A340-300, A340- 500, and A340-600 series airplanes. The SNPRM published in the Federal Register on December 23, 2015 (80 FR 79738) (``the SNPRM''). We preceded the SNPRM with a notice of proposed rulemaking (NPRM) that published in the Federal Register on February 3, 2014 (79 FR 6104) (``the NPRM''). The NPRM proposed to require inspecting certain THSAs to determine the number of total flight cycles the THSA has accumulated, and replacing the THSA if necessary. The NPRM was prompted by the results of endurance qualification tests on the THSA, which revealed a partial loss of the NBB efficiency in specific load conditions. The SNPRM proposed to revise the NPRM by adding airplanes to the proposed applicability, reducing the proposed compliance times for replacing affected TSHAs, and revising the definition of a serviceable THSA. We are issuing this AD to detect and correct premature wear of the carbon friction disks on the NBB of the THSA. Such a condition could lead to reduced braking efficiency in certain load conditions and, in conjunction with the inability of the power gear train to keep the ball screw in its last commanded position, could result in uncommanded movements of the THS and loss of control of the airplane. The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Union, has issued EASA Airworthiness Directive 2014-0257R1, dated May 29, 2015 (referred to after this as the Mandatory Continuing Airworthiness Information, or ``the MCAI''), to correct an unsafe condition on all Airbus Model A330- 200, A330-200 Freighter, A330-300, A340-200, and A340-300 series airplanes; and Model A340-500 and A340-600 series airplanes. The MCAI states: During endurance qualification tests on Trimmable Horizontal Stabilizer Actuator (THSA) of another Airbus aeroplane type, a partial loss of the no-back brake (NBB) efficiency was experienced. Due to THSA design similarity on the A330/A340 fleet, a similar partial loss of the NBB efficiency was identified on THSA Part Number (P/N) 47147 as installed on A330-300 and A340-200/-300 aeroplanes, on THSA P/N 47172 as installed on A330-200/-300 and A340-200/-300 aeroplanes, and on THSA P/N 47175 as installed on A340-500/600 aeroplanes. Investigation results concluded that this partial loss of braking efficiency in some specific aerodynamic load conditions was due to polishing and auto-contamination of the NBB carbon friction disks. This condition, if not detected and corrected and in conjunction with the power gear train not able to keep the ball screw in its last commanded position, could lead to uncommanded movements of the THS, possibly resulting in loss of control of the aeroplane. To address this potential unsafe condition, EASA issued AD 2013- 0144 [http://ad.easa.europa.eu/blob/easa_ad_2013_0144.zip/AD_2013-0144R1_2] to require replacement of each THSA that has exceeded 16,000 flight cycles (FC) in service, to be sent in shop for NBB carbon disk replacement. Since that AD was issued, a need for clarification has been demonstrated, regarding the identification of the THSA `affected' by this requirement. For this reason, EASA AD 2013-0144 [http://ad.easa.europa.eu/blob/easa_ad_2013_0144.zip/AD_2013-0144R1_2] was revised, confirming that this AD only affected those THSA identified by Part Number (P/ N) in Airbus Alert Operator Transmission (AOT) A27L005-13. In addition, a note was added to make clear that the life limits as specified in the current revision of ALS Part 4 are still relevant for the affected THSA, as applicable to aeroplane model and THSA P/ N. Since EASA AD 2013-0144R1 [http://ad.easa.europa.eu/ad/2013-0144R1] was issued, further assessment of the ageing/endurance issue has resulted in the conclusion that there is a need to replace the NBB installed on the THSA. Consequently, EASA issued AD 2014-0257 [http://ad.easa.europa.eu/blob/EASA_AD_2014_0257_R1.pdf/AD_2014-0257R1_1] which retained the requirements of EASA AD 2013-0144R1, which was superseded, and required removal from service of affected THSA. THSA should be sent in shop for NBB carbon disk replacement. This [EASA] AD affected additional THSA P/Ns when compared to EASA AD 2013- 0144R1 and Airbus AOT A27L005-13. Since that [EASA] AD was issued, it was determined that it is necessary to consider that the THSA removal for NBB disks replacement could also be calculated since last NBB disk replacement which was done in-shop. This AD also adds Model A340-541 and A340-642 airplanes to the applicability. 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-2014-0006. Comments We gave the public the opportunity to participate in developing this AD. We received no comments on the SNPRM or on the determination of the cost to the public. Conclusion We reviewed the relevant data and determined that air safety and the public interest require adopting this AD as proposed except for minor editorial changes. We have determined that these minor changes:Are consistent with the intent that was proposed in the SNPRM for correcting the unsafe condition; and Do not add any additional burden upon the public than was already proposed in the SNPRM. Related Service Information Under 1 CFR Part 51 Airbus has issued the following service information, all dated July 15, 2014. Service Bulletin A330-27-3199 (for Model A330 series airplanes); Service Bulletin A340-27-4190 (for Model A340-200 and -300 series airplanes); and Service Bulletin A340-27-5062 (for Model A340-500 and -600 series airplanes). The service information describes procedures for inspecting the THSA to determine the part number and replacing THSAs having certain part numbers with a new or serviceable part. 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 94 airplanes of U.S. registry. [[Page 31846]] We estimate the following costs to comply with this AD: Estimated Costs ---------------------------------------------------------------------------------------------------------------- Cost per Cost on U.S. Action Labor cost Parts cost product operators ---------------------------------------------------------------------------------------------------------------- Inspection.......................... 3 work-hours x $85 per $0 $255 $23,970 hour = $255. ---------------------------------------------------------------------------------------------------------------- We estimate the following costs to do any necessary replacements that will be required based on the results of the required inspection. We have no way of determining the number of airplanes that might need these replacements: On-Condition Costs ---------------------------------------------------------------------------------------------------------------- Cost per Action Labor cost Parts cost product ---------------------------------------------------------------------------------------------------------------- Replacement.................................. 23 work-hour x $85 per hour = $722,556 $724,511 $1,955. ---------------------------------------------------------------------------------------------------------------- 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 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 adding the following new airworthiness directive (AD): 2016-10-08 Airbus: Amendment 39-18519. Docket No. FAA-2014-0006; Directorate Identifier 2013-NM-147-AD. (a) Effective Date This AD is effective June 24, 2016. (b) Affected ADs None. (c) Applicability This AD applies to the Airbus airplanes, certificated in any category, identified in paragraphs (c)(1) through (c)(7) of this AD, all manufacturer serial numbers. (1) Model A330-201, -202, -203, -223, and -243 airplanes. (2) Model A330-223F and -243F airplanes. (3) Model A330-301, -302, -303, -321, -322, -323, -341, -342, and -343 airplanes. (4) Model A340-211, -212, and -213 airplanes. (5) Model A340-311, -312, and -313 airplanes. (6) Model A340-541 airplanes. (7) Model A340-642 airplanes. (d) Subject Air Transport Association (ATA) of America Code 27, Flight Controls. (e) Reason This AD was prompted by the results of endurance qualification tests on the trimmable horizontal stabilizer actuator (THSA), which revealed a partial loss of the no-back brake (NBB) efficiency in specific load conditions. We are issuing this AD to detect and correct premature wear of the carbon friction disks on the NBB of the THSA. Such a condition could lead to reduced braking efficiency in certain load conditions and, in conjunction with the inability of the power gear train to keep the ball screw in its last commanded position, could result in uncommanded movements of the trimmable horizontal stabilizer and loss of control of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Inspection To Determine THSA Part Number and Accumulated Total Flight Cycles Within 90 days after the effective date of this AD: Inspect the THSA to determine if it has a part number that is specified in paragraph (g)(1) or (g)(2) of this AD, and to determine the total number of flight cycles accumulated since the THSA's first installation on an airplane, or since the most recent NBB replacement. A review of airplane delivery or maintenance records is acceptable in lieu of this inspection if the part number of the THSA can be conclusively determined from that review. (1) For Model A330-200 Freighter, A330-200, A330-300, A340-200 and A340-300 series airplanes: Part number (P/N) 47147-500, 47147- 700, 47172-300, 47172-500, 47172-510, or 47172-520. (2) For Model A340-500 and -600 series airplanes: P/N 47175-200, 47175-300, 47175-500, or 47175-520. [[Page 31847]] (h) THSA Replacement for Airbus Model A330-200 Freighter, A330-200, A330-300, A340-200, and A340-300 Series Airplanes For Airbus Model A330-200 Freighter, A330-200, A330-300, A340- 200, and A340-300 series airplanes having a THSA with a part number specified in paragraph (g)(1) of this AD: At the applicable time specified in paragraph (h)(1), (h)(2), or (h)(3) of this AD, replace each affected THSA with a serviceable THSA, in accordance with the Accomplishment Instructions of Airbus Service Bulletin A330-27-3199, dated July 15, 2014; or Airbus Service Bulletin A340-27-4190, dated July 15, 2014; as applicable. Note 1 to paragraphs (h), (i), and (j) of this AD: The THSA life limits specified in Part 4--Aging System Maintenance of the Airbus A330 and A340 Airworthiness Limitations Sections are still relevant, as applicable to airplane model and THSA part number. (1) For a THSA that has accumulated or exceeded 20,000 total flight cycles since the THSA's first installation on an airplane, or since the most recent NBB replacement, whichever is later, as of the effective date of this AD: Within 6 months after the effective date of this AD. (2) For a THSA that has accumulated or exceeded 16,000 total flight cycles, but less than 20,000 total flight cycles since the THSA's first installation on an airplane, or since the most recent NBB replacement, whichever is later, as of the effective date of this AD: At the applicable time specified in paragraphs (h)(2)(i) and (h)(2)(ii) of this AD. (i) For Model A330-200 Freighter, A330-200, and A330-300 series airplanes: Within 12 months after the effective date of this AD but without exceeding 20,000 total flight cycles. (ii) For Model A340-200, and A340-300 series airplanes: Within 12 months after the effective date of this AD but without exceeding 20,000 total flight cycles. (3) For a THSA that has accumulated less than 16,000 total flight cycles since first installation on an airplane, or since the most recent NBB replacement, whichever is later, as of the effective date of this AD: At the applicable time specified in paragraph (i) of this AD. (i) Replacement Times for Airbus Model A330-200 Freighter, A330-200, A330-300, A340-200, and A340-300 Series Airplanes With THSAs Having Less Than 16,000 Total Flight Cycles as of the Effective Date of This AD The requirements of this paragraph apply to Airbus Model A330- 200 Freighter, A330-200, A330-300, A340-200, and A340-300 series airplanes having a THSA with a part number specified in paragraph (g)(1) of this AD that has accumulated less than 16,000 total flight cycles since first installation on an airplane, or since the most recent NBB replacement, whichever is later, as of the effective date of this AD. Not later than the date specified in paragraphs (i)(1), (i)(2), and (i)(3) of this AD, as applicable: For any THSA having reached or exceeded on that date the corresponding number of total flight cycles as specified in paragraphs (i)(1), (i)(2), and (i)(3) of this AD, as applicable, replace the THSA with a serviceable unit, in accordance with the Accomplishment Instructions of Airbus Service Bulletin A330-27-3199, dated July 15, 2014; or Airbus Service Bulletin A340-27-4190, dated July 15, 2014; as applicable. (1) As of 12 months after the effective date of this AD: The THSA flight-cycle limit (since first installation on an airplane, or since last NBB replacement, whichever occurs later) is 16,000 total flight cycles. (2) As of July 31, 2017: The THSA flight-cycle limit (since first installation on an airplane, or since last NBB replacement, whichever occurs later) is 14,000 total flight cycles. (3) As of July 31, 2018: The THSA flight-cycle limit (since first installation on an airplane, or since last NBB replacement, whichever occurs later) is 12,000 total flight cycles. (j) THSA Replacement for Airbus Model A340-500 and -600 Series Airplanes For Airbus Model A340-500 and A340-600 series airplanes having a THSA with a part number specified in paragraph (g)(2) of this AD: Not later than the date specified in paragraphs (j)(1), (j)(2), (j)(3), and (j)(4) of this AD, as applicable, for any THSA having reached or exceeded on that date the corresponding number of total flight cycles as specified in paragraphs (j)(1), (j)(2), (j)(3), and (j)(4) of this AD, as applicable, replace each affected THSA with a serviceable THSA, in accordance with the Accomplishment Instructions of Airbus Service Bulletin A340-27-5062, dated July 15, 2014. (1) As of the effective date of this AD: The THSA flight-cycle limit (since first installation on an airplane, or since last NBB replacement, whichever occurs later) is 6,000 total flight cycles. (2) As of April 30, 2017: The THSA flight-cycle limit (since first installation on an airplane, or since last NBB replacement, whichever occurs later) is 5,200 total flight cycles. (3) As of April 30, 2018: The THSA flight-cycle limit (since first installation on an airplane, or since last NBB replacement, whichever occurs later) is 4,400 total flight cycles. (4) As of April 30, 2019: The THSA flight-cycle limit (since first installation on an airplane, or since last NBB replacement, whichever occurs later) is 3,500 total flight cycles. (k) THSA Replacement Intervals for All Airbus Airplanes Identified in Paragraph (c) of This AD For any part installed, as required by this AD, having a part number identified in paragraph (g)(1) or (g)(2) of this AD: From the dates specified in paragraphs (i) and (j) of this AD, as applicable, and prior to exceeding the accumulated number of total flight cycles corresponding to each time, replace each affected THSA with a serviceable part, in accordance with the Accomplishment Instructions of the applicable service information identified in paragraphs (k)(1), (k)(2), and (k)(3) of this AD. (1) Airbus Service Bulletin A330-27-3199, dated July 15, 2014. (2) Airbus Service Bulletin A340-27-4190, dated July 15, 2014. (3) Airbus Service Bulletin A340-27-5062, dated July 15, 2014. (l) Definition of Serviceable THSA For the purposes of this AD, a serviceable THSA is a THSA: (1) Having a part number identified in paragraph (g)(1) or (g)(2) of this AD that has not exceeded any of the total accumulated flight cycles identified in paragraphs (i)(1) through (i)(3) of this AD, or paragraphs (j)(1) through (j)(4) of this AD, as applicable; or (2) Having a part number that is not identified in paragraph (g)(1) or (g)(2) of this AD. (m) Parts Installation Limitation From each date specified in paragraphs (i)(1), (i)(2), and (i)(3) of this AD, and paragraphs (j)(1) through (j)(4) of this AD, as applicable, a THSA having a part number identified in paragraph (g)(1) or (g)(2) of this AD may be installed on any airplane, provided the THSA has not exceeded the corresponding number of accumulated total flight cycles. (n) Other FAA AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, International Branch, ANM-116, Transport Airplane Directorate, 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 International Branch, send it to ATTN: Vladimir Ulyanov, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356; telephone 425-227-1138; fax 425-227-1149. Information may be emailed to: [email protected]. 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: 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, International Branch, ANM-116, Transport Airplane Directorate, FAA; or the European Aviation Safety Agency (EASA); or Airbus's EASA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOA-authorized signature. (3) Required for Compliance (RC): If any service information contains procedures or tests that are identified as RC, those procedures and tests must be done to comply with this AD; any procedures or tests that are not identified as RC are recommended. Those procedures and tests that are not identified as RC may be deviated from using accepted methods in accordance with the operator's maintenance or inspection program without obtaining approval of an AMOC, provided the procedures and tests identified as RC can [[Page 31848]] be done and the airplane can be put back in an airworthy condition. Any substitutions or changes to procedures or tests identified as RC require approval of an AMOC. (o) Related Information Refer to Mandatory Continuing Airworthiness Information (MCAI) EASA Airworthiness Directive 2014-0257R1, dated May 29, 2015, 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-2014-0006. (p) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless this AD specifies otherwise. (i) Airbus Service Bulletin A330-27-3199, dated July 15, 2014. (ii) Airbus Service Bulletin A340-27-4190, dated July 15, 2014. (iii) Airbus Service Bulletin A340-27-5062, dated July 15, 2014. (3) For service information identified in this AD, contact Airbus SAS, Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France; telephone +33 5 61 93 36 96; fax +33 5 61 93 45 80; email [email protected]; Internet http://www.airbus.com. (4) 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. (5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html. Issued in Renton, Washington, on May 9, 2016. Michael Kaszycki, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2016-11575 Filed 5-19-16; 8:45 am] BILLING CODE 4910-13-P
![Federal Register / Vol. 81, No. 98 / Friday, May 20, 2016 / Rules and Regulations 31845
at http://www.regulations.gov by to keep the ball screw in its last which retained the requirements of EASA AD
searching for and locating Docket No. commanded position, could result in 2013–0144R1, which was superseded, and
FAA–2014–0006. uncommanded movements of the THS required removal from service of affected
THSA. THSA should be sent in shop for NBB
and loss of control of the airplane.
Examining the AD Docket The European Aviation Safety Agency carbon disk replacement. This [EASA] AD
affected additional THSA P/Ns when
You may examine the AD docket on (EASA), which is the Technical Agent compared to EASA AD 2013–0144R1 and
the Internet at http:// for the Member States of the European Airbus AOT A27L005–13.
www.regulations.gov by searching for Union, has issued EASA Airworthiness Since that [EASA] AD was issued, it was
and locating Docket No. FAA–2014– Directive 2014–0257R1, dated May 29, determined that it is necessary to consider
0006; or in person at the Docket 2015 (referred to after this as the that the THSA removal for NBB disks
Management Facility between 9 a.m. Mandatory Continuing Airworthiness replacement could also be calculated since
and 5 p.m., Monday through Friday, Information, or ‘‘the MCAI’’), to correct last NBB disk replacement which was done
except Federal holidays. The AD docket an unsafe condition on all Airbus Model in-shop.
contains this AD, the regulatory A330–200, A330–200 Freighter, A330– This AD also adds Model A340–541 and
evaluation, any comments received, and 300, A340–200, and A340–300 series A340–642 airplanes to the applicability.
other information. The street address for airplanes; and Model A340–500 and You may examine the MCAI in the AD
the Docket Office (telephone 800–647– A340–600 series airplanes. The MCAI docket on the Internet at http://
5527) is Docket Management Facility, states: www.regulations.gov by searching for
U.S. Department of Transportation, During endurance qualification tests on and locating Docket No. FAA–2014–
Docket Operations, M–30, West Trimmable Horizontal Stabilizer Actuator 0006.
Building Ground Floor, Room W12–140, (THSA) of another Airbus aeroplane type, a
1200 New Jersey Avenue SE., partial loss of the no-back brake (NBB)
Comments
Washington, DC 20590. efficiency was experienced. Due to THSA We gave the public the opportunity to
design similarity on the A330/A340 fleet, a participate in developing this AD. We
FOR FURTHER INFORMATION CONTACT:
similar partial loss of the NBB efficiency was received no comments on the SNPRM or
Vladimir Ulyanov, Aerospace Engineer, identified on THSA Part Number (P/N) 47147
International Branch, ANM–116, on the determination of the cost to the
as installed on A330–300 and A340–200/–
Transport Airplane Directorate, FAA, 300 aeroplanes, on THSA P/N 47172 as public.
1601 Lind Avenue SW., Renton, WA installed on A330–200/–300 and A340–200/ Conclusion
98057–3356; telephone 425–227–1138; –300 aeroplanes, and on THSA P/N 47175 as
fax 425–227–1149. installed on A340–500/600 aeroplanes. We reviewed the relevant data and
Investigation results concluded that this determined that air safety and the
SUPPLEMENTARY INFORMATION: partial loss of braking efficiency in some public interest require adopting this AD
Discussion specific aerodynamic load conditions was as proposed except for minor editorial
due to polishing and auto-contamination of changes. We have determined that these
We issued a supplemental notice of the NBB carbon friction disks. minor changes:
proposed rulemaking (SNPRM) to This condition, if not detected and
• Are consistent with the intent that
amend 14 CFR part 39 by adding an AD corrected and in conjunction with the power
gear train not able to keep the ball screw in was proposed in the SNPRM for
that would apply to all Airbus Model correcting the unsafe condition; and
A330–200 Freighter, A330–200, A330– its last commanded position, could lead to
uncommanded movements of the THS, • Do not add any additional burden
300, A340–200, A340–300, A340–500, upon the public than was already
possibly resulting in loss of control of the
and A340–600 series airplanes. The aeroplane. proposed in the SNPRM.
SNPRM published in the Federal To address this potential unsafe condition,
Register on December 23, 2015 (80 FR EASA issued AD 2013–0144 [http:// Related Service Information Under 1
79738) (‘‘the SNPRM’’). We preceded ad.easa.europa.eu/blob/easa_ad_2013_ CFR Part 51
the SNPRM with a notice of proposed 0144.zip/AD_2013-0144R1_2] to require Airbus has issued the following
rulemaking (NPRM) that published in replacement of each THSA that has exceeded
16,000 flight cycles (FC) in service, to be sent
service information, all dated July 15,
the Federal Register on February 3, 2014.
in shop for NBB carbon disk replacement.
2014 (79 FR 6104) (‘‘the NPRM’’). The
Since that AD was issued, a need for • Service Bulletin A330–27–3199 (for
NPRM proposed to require inspecting clarification has been demonstrated, Model A330 series airplanes);
certain THSAs to determine the number regarding the identification of the THSA • Service Bulletin A340–27–4190 (for
of total flight cycles the THSA has ‘affected’ by this requirement. Model A340–200 and –300 series
accumulated, and replacing the THSA if For this reason, EASA AD 2013–0144 airplanes); and
necessary. The NPRM was prompted by [http://ad.easa.europa.eu/blob/easa_ad_ • Service Bulletin A340–27–5062 (for
the results of endurance qualification 2013_0144.zip/AD_2013-0144R1_2] was Model A340–500 and –600 series
tests on the THSA, which revealed a revised, confirming that this AD only affected
those THSA identified by Part Number (P/N)
airplanes).
partial loss of the NBB efficiency in The service information describes
in Airbus Alert Operator Transmission (AOT)
specific load conditions. The SNPRM A27L005–13. In addition, a note was added procedures for inspecting the THSA to
proposed to revise the NPRM by adding to make clear that the life limits as specified determine the part number and
airplanes to the proposed applicability, in the current revision of ALS Part 4 are still replacing THSAs having certain part
reducing the proposed compliance relevant for the affected THSA, as applicable numbers with a new or serviceable part.
times for replacing affected TSHAs, and to aeroplane model and THSA P/N. This service information is reasonably
revising the definition of a serviceable Since EASA AD 2013–0144R1 [http:// available because the interested parties
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THSA. We are issuing this AD to detect ad.easa.europa.eu/ad/2013-0144R1] was
have access to it through their normal
and correct premature wear of the issued, further assessment of the ageing/
endurance issue has resulted in the course of business or by the means
carbon friction disks on the NBB of the conclusion that there is a need to replace the identified in the ADDRESSES section.
THSA. Such a condition could lead to NBB installed on the THSA.
reduced braking efficiency in certain Costs of Compliance
Consequently, EASA issued AD 2014–0257
load conditions and, in conjunction [http://ad.easa.europa.eu/blob/EASA_AD_ We estimate that this AD affects 94
with the inability of the power gear train 2014_0257_R1.pdf/AD_2014-0257R1_1] airplanes of U.S. registry.
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![31846 Federal Register / Vol. 81, No. 98 / Friday, May 20, 2016 / Rules and Regulations
We estimate the following costs to
comply with this AD:
ESTIMATED COSTS
Cost per prod- Cost on U.S.
Action Labor cost Parts cost uct operators
Inspection ........................................................ 3 work-hours × $85 per hour = $255 ............. $0 $255 $23,970
We estimate the following costs to do required based on the results of the determining the number of airplanes
any necessary replacements that will be required inspection. We have no way of that might need these replacements:
ON-CONDITION COSTS
Cost per
Action Labor cost Parts cost product
Replacement ................................................................. 23 work-hour × $85 per hour = $1,955 ........................ $722,556 $724,511
Authority for This Rulemaking under the criteria of the Regulatory (7) Model A340–642 airplanes.
Title 49 of the United States Code Flexibility Act. (d) Subject
specifies the FAA’s authority to issue List of Subjects in 14 CFR Part 39 Air Transport Association (ATA) of
rules on aviation safety. Subtitle I, America Code 27, Flight Controls.
Air transportation, Aircraft, Aviation
section 106, describes the authority of
safety, Incorporation by reference, (e) Reason
the FAA Administrator. ‘‘Subtitle VII:
Safety. This AD was prompted by the results of
Aviation Programs,’’ describes in more
detail the scope of the Agency’s Adoption of the Amendment endurance qualification tests on the
trimmable horizontal stabilizer actuator
authority. Accordingly, under the authority (THSA), which revealed a partial loss of the
We are issuing this rulemaking under delegated to me by the Administrator, no-back brake (NBB) efficiency in specific
the authority described in ‘‘Subtitle VII, the FAA amends 14 CFR part 39 as load conditions. We are issuing this AD to
Part A, Subpart III, Section 44701: follows: detect and correct premature wear of the
General requirements.’’ Under that carbon friction disks on the NBB of the
section, Congress charges the FAA with PART 39—AIRWORTHINESS THSA. Such a condition could lead to
promoting safe flight of civil aircraft in DIRECTIVES reduced braking efficiency in certain load
air commerce by prescribing regulations conditions and, in conjunction with the
for practices, methods, and procedures ■ 1. The authority citation for part 39 inability of the power gear train to keep the
the Administrator finds necessary for continues to read as follows: ball screw in its last commanded position,
safety in air commerce. This regulation could result in uncommanded movements of
Authority: 49 U.S.C. 106(g), 40113, 44701. the trimmable horizontal stabilizer and loss
is within the scope of that authority
§ 39.13 [Amended] of control of the airplane.
because it addresses an unsafe condition
that is likely to exist or develop on ■ 2. The FAA amends § 39.13 by adding (f) Compliance
products identified in this rulemaking the following new airworthiness Comply with this AD within the
action. directive (AD): compliance times specified, unless already
done.
Regulatory Findings 2016–10–08 Airbus: Amendment 39–18519.
Docket No. FAA–2014–0006; Directorate (g) Inspection To Determine THSA Part
We determined that this AD will not Identifier 2013–NM–147–AD. Number and Accumulated Total Flight
have federalism implications under Cycles
Executive Order 13132. This AD will (a) Effective Date
Within 90 days after the effective date of
not have a substantial direct effect on This AD is effective June 24, 2016.
this AD: Inspect the THSA to determine if it
the States, on the relationship between (b) Affected ADs has a part number that is specified in
the national government and the States, paragraph (g)(1) or (g)(2) of this AD, and to
or on the distribution of power and None.
determine the total number of flight cycles
responsibilities among the various (c) Applicability accumulated since the THSA’s first
levels of government. This AD applies to the Airbus airplanes, installation on an airplane, or since the most
For the reasons discussed above, I certificated in any category, identified in recent NBB replacement. A review of
certify that this AD: paragraphs (c)(1) through (c)(7) of this AD, all airplane delivery or maintenance records is
1. Is not a ‘‘significant regulatory manufacturer serial numbers. acceptable in lieu of this inspection if the
action’’ under Executive Order 12866; (1) Model A330–201, –202, –203, –223, and part number of the THSA can be conclusively
2. Is not a ‘‘significant rule’’ under the –243 airplanes. determined from that review.
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DOT Regulatory Policies and Procedures (2) Model A330–223F and –243F airplanes. (1) For Model A330–200 Freighter, A330–
(3) Model A330–301, –302, –303, –321, 200, A330–300, A340–200 and A340–300
(44 FR 11034, February 26, 1979); series airplanes: Part number (P/N) 47147–
–322, –323, –341, –342, and –343 airplanes.
3. Will not affect intrastate aviation in (4) Model A340–211, –212, and –213 500, 47147–700, 47172–300, 47172–500,
Alaska; and airplanes. 47172–510, or 47172–520.
4. Will not have a significant (5) Model A340–311, –312, and –313 (2) For Model A340–500 and –600 series
economic impact, positive or negative, airplanes. airplanes: P/N 47175–200, 47175–300,
on a substantial number of small entities (6) Model A340–541 airplanes. 47175–500, or 47175–520.
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![31848 Federal Register / Vol. 81, No. 98 / Friday, May 20, 2016 / Rules and Regulations
be done and the airplane can be put back in ACTION: Final rule. Operations, M–30, West Building
an airworthy condition. Any substitutions or Ground Floor, Room W12–140, 1200
changes to procedures or tests identified as SUMMARY: We are adopting a new New Jersey Avenue SE., Washington,
RC require approval of an AMOC. airworthiness directive (AD) for certain DC 20590.
(o) Related Information The Boeing Company Model 787–8 and
FOR FURTHER INFORMATION CONTACT:
787–9 airplanes equipped with General
Refer to Mandatory Continuing Allen Rauschendorfer, Aerospace
Airworthiness Information (MCAI) EASA Electric engines. This AD was prompted
by reports of cracking in barrel nuts on Engineer, Airframe Branch, ANM–120S,
Airworthiness Directive 2014–0257R1, dated Seattle Aircraft Certification Office,
May 29, 2015, for related information. This a forward engine mount of Model 747–
MCAI may be found in the AD docket on the 8 airplanes, which shares a similar FAA, 1601 Lind Avenue SW., Renton,
Internet at http://www.regulations.gov by design to the forward engine mount of WA 98057–3356; phone: 425–917–6487;
searching for and locating Docket No. FAA– Model 787–8 and 787–9 airplanes. This fax: 425–917–6590; email:
2014–0006. AD requires, for certain airplanes, allen.rauschendorfer@faa.gov.
(p) Material Incorporated by Reference replacement of the four barrel nuts of SUPPLEMENTARY INFORMATION:
(1) The Director of the Federal Register the forward engine mount on each
engine. For certain other airplanes, this Discussion
approved the incorporation by reference
(IBR) of the service information listed in this AD requires an inspection to determine We issued a notice of proposed
paragraph under 5 U.S.C. 552(a) and 1 CFR if any forward engine mount barrel nut rulemaking (NPRM) to amend 14 CFR
part 51. having a certain part number is part 39 by adding an AD that would
(2) You must use this service information installed; and related investigative and apply to certain The Boeing Company
as applicable to do the actions required by corrective actions if necessary. We are Model 787–8 and 787–9 airplanes
this AD, unless this AD specifies otherwise.
issuing this AD to detect and correct equipped with General Electric engines.
(i) Airbus Service Bulletin A330-27–3199,
dated July 15, 2014. cracking of the forward engine mount The NPRM published in the Federal
(ii) Airbus Service Bulletin A340–27–4190, barrel nuts. Such cracking could result Register on December 11, 2015 (80 FR
dated July 15, 2014. in reduced load capacity of the forward 76878) (‘‘the NPRM’’). The NPRM was
(iii) Airbus Service Bulletin A340–27– engine mount and could result in prompted by reports of cracking in
5062, dated July 15, 2014. separation of an engine from the barrel nuts on a forward engine mount
(3) For service information identified in airplane and consequent loss of control of Model 747–8 airplanes, which shares
this AD, contact Airbus SAS, Airworthiness of the airplane. a similar design to the forward engine
Office—EAL, 1 Rond Point Maurice Bellonte, mount of Model 787–8 and 787–9
DATES: This AD is effective June 24,
31707 Blagnac Cedex, France; telephone +33
5 61 93 36 96; fax +33 5 61 93 45 80; email 2016. airplanes. The NPRM proposed to
airworthiness.A330–A340@airbus.com; The Director of the Federal Register require, for certain airplanes,
Internet http://www.airbus.com. approved the incorporation by reference replacement of the four barrel nuts of
(4) You may view this service information of a certain publication listed in this AD the forward engine mount on each
at the FAA, Transport Airplane Directorate, as of June 24, 2016. engine. For certain other airplanes, the
1601 Lind Avenue SW., Renton, WA. For ADDRESSES: For service information NPRM proposed to require an
information on the availability of this identified in this final rule, contact inspection to determine if any forward
material at the FAA, call 425–227–1221. engine mount barrel nut having a
Boeing Commercial Airplanes,
(5) You may view this service information
that is incorporated by reference at the Attention: Data & Services Management, certain part number is installed; and
National Archives and Records P.O. Box 3707, MC 2H–65, Seattle, WA related investigative and corrective
Administration (NARA). For information on 98124–2207; telephone: 206–544–5000, actions if necessary. We are issuing this
the availability of this material at NARA, call extension 1; fax: 206–766–5680; Internet AD to detect and correct cracking of the
202–741–6030, or go to: http:// https://www.myboeingfleet.com. You forward engine mount barrel nuts. Such
www.archives.gov/federal-register/cfr/ibr- may view this referenced service cracking could result in reduced load
locations.html. information at the FAA, Transport capacity of the forward engine mount
Issued in Renton, Washington, on May 9, Airplane Directorate, 1601 Lind Avenue and could result in separation of an
2016. SW., Renton, WA. For information on engine from the airplane and
Michael Kaszycki, the availability of this material at the consequent loss of control of the
Acting Manager, Transport Airplane FAA, call 425–227–1221. It is also airplane.
Directorate, Aircraft Certification Service. available on the Internet at http://
Comments
[FR Doc. 2016–11575 Filed 5–19–16; 8:45 am] www.regulations.gov by searching for
BILLING CODE 4910–13–P and locating Docket No. FAA–2015– We gave the public the opportunity to
6548. participate in developing this AD. The
following presents the comment
Examining the AD Docket received on the NPRM and the FAA’s
DEPARTMENT OF TRANSPORTATION
You may examine the AD docket on response to the comment.
Federal Aviation Administration the Internet at http://
www.regulations.gov by searching for Request To Revise the Compliance
14 CFR Part 39 and locating Docket No. FAA–2015– Time
6548; or in person at the Docket United Airlines requested that the
[Docket No. FAA–2015–6548; Directorate
Identifier 2015–NM–114–AD; Amendment Management Facility between 9 a.m. compliance time in the NPRM for Group
39–18520; AD 2016–10–09] and 5 p.m., Monday through Friday, 1 airplanes be changed from 2 years to
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except Federal holidays. The AD docket ‘‘at next engine change.’’ United
RIN 2120–AA64 contains this AD, the regulatory considered the proposed compliance
evaluation, any comments received, and time to be ‘‘expedited’’ because it took
Airworthiness Directives; The Boeing
other information. The address for the Boeing 7 months to publish the service
Company Airplanes
Docket Office (phone: 800–647–5527) is information operators would be
AGENCY:Federal Aviation Docket Management Facility, U.S. required to use to comply with the
Administration (FAA), DOT. Department of Transportation, Docket requirements in the NPRM, and it took
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Document Created: 2016-05-20 01:59:36
Document Modified: 2016-05-20 01:59:36
| 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 | Rules and Regulations | |
| Action | Final rule. | |
| Dates | This AD is effective June 24, 2016. | |
| Contact | Vladimir Ulyanov, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356; telephone 425-227-1138; fax 425-227-1149. | |
| FR Citation | 81 FR 31844 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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