Document ID: FAA-2018-0704-0005
Agency: faa
Document Type: Rule
Title: Airworthiness Directives: Airbus SAS Airplanes
Posted Date: 2019-04-04T04:00Z

[Federal Register Volume 84, Number 65 (Thursday, April 4, 2019)]
[Rules and Regulations]
[Pages 13110-13114]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2019-06405]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0704; Product Identifier 2018-NM-066-AD; Amendment 
39-19601; AD 2019-06-03]
RIN 2120-AA64

Airworthiness Directives; Airbus SAS Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Final rule.

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SUMMARY: We are adopting a new airworthiness directive (AD) for all 
Airbus SAS Model A330-200 Freighter, -200, and -300 series airplanes; 
and Airbus SAS Model A340-200, -300, -500, and -600 series airplanes. 
This AD was prompted by reports of depressurization of hydraulic 
reservoirs caused by air leakage from the pressure relief valve (PRV) 
of the hydraulic reservoir (HR) due to the extrusion of the O-ring seal 
from certain HR PRVs. This AD requires replacing affected PRVs and re-
identifying affected HRs. We are issuing this AD to address the unsafe 
condition on these products.

DATES: This AD is effective May 9, 2019.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of May 9, 2019.

ADDRESSES: For Airbus service information identified in this final 
rule, contact Airbus SAS, Airworthiness Office--EAL, Rond Point Emile 
Dewoitine No: 2, 31700 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. For Safran service information 
identified in this final rule, contact Safran Aero Boosters, 121 Route 
de Liers, 4041 Milmort (Herstal), Belgium; telephone: +32 4 278 8111; 
fax: +32 4 278 52 07; internet https://www.safran-aero-boosters.com, or 
https://www.safran-group.com/company/safran-aero-boosters. You may view 
this service information at the FAA, Transport Standards Branch, 2200 
South 216th St., Des Moines, WA.
    For information on the availability of this material at the FAA, 
call 206-231-3195. It is also available on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-
0704.

Examining the AD Docket

    You may examine the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-
0704; or in person at Docket Operations between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays. The AD docket contains 
this final rule, the regulatory evaluation, any comments received, and 
other information. The address for Docket Operations (phone: 800-647-
5527) is U.S. Department of Transportation, Docket Operations, M-30, 
West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE, 
Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Vladimir Ulyanov, Aerospace Engineer, 
International Section, Transport Standards Branch, FAA, 2200 South 
216th St., Des Moines, WA 98198; telephone and fax: 206-231-3229.

SUPPLEMENTARY INFORMATION: 

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 by adding an AD that would apply to all Airbus SAS Model A330-
200 Freighter, -200, and -300 series airplanes; and Airbus SAS Model 
A340-200, -300, -500, and -600 series airplanes. The NPRM published in 
the Federal Register on August 3, 2018 (83 FR 38088). The NPRM was 
prompted by reports of depressurization of HRs caused by air leakage 
from the PRV of the HR due to the extrusion of the O-

[[Page 13111]]

ring seal from certain HR PRVs. The NPRM proposed to require 
identifying the part number of the HR, and replacing and re-identifying 
affected HR PRVs. We are issuing this AD to address air leakage from 
the HR PRV, which could lead to the loss of one or more hydraulic 
systems, with the possible 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 AD 
2018-0064, dated March 23, 2018 (referred to after this as the 
Mandatory Continuing Airworthiness Information, or ``the MCAI''), to 
correct an unsafe condition for all Airbus SAS Model A330-200 
Freighter, -200, and -300 series airplanes; and Airbus SAS Model A340-
200, -300, -500, and -600 series airplanes. The MCAI states:

    Some events of depressurisation of hydraulic reservoirs have 
been reported, due to air leakage from the HR PRV [hydraulic 
reservoir pressure relief valve]. The results of the investigations 
revealed that the air leakage was due to the extrusion of the O-ring 
seal from the HR PRV. This may have happened during HR maintenance, 
testing or during flight, if HR over-filling was performed, as a 
result of which hydraulic fluid could pass through the PRV, causing 
[the] PRV seal to migrate from its nominal position, leading to loss 
of HR pressurisation.
    This condition, if not detected and corrected, could lead to the 
loss of one or more hydraulic systems, possibly resulting in loss of 
control of the aeroplane.
    To address this potential unsafe condition, Airbus issued the 
AOT [Alert Operators Transmission (AOT) A29L005-16, dated June 28, 
2016] to provide instructions to inspect the HR fluid level of each 
hydraulic circuit and to provide instructions for certain actions 
when servicing with hydraulic fluid is accomplished on an HR. 
Consequently, EASA published AD 2016-0107 [corresponding to FAA AD 
2017-01-08, Amendment 39-18775 (82 FR 1593, January 6, 2017) 
(``2017-01-08'')] to require accomplishment of these actions for 
aeroplanes in service.
    Since that [EASA] AD was issued, it was determined that the 
detected air leakage was due to the extrusion of the O-ring seal 
from a specific batch of HR PRV. Airbus published the applicable 
inspection SB [service bulletin] to inspect the HR of each hydraulic 
circuit and to provide instructions to identify the affected parts, 
and the Modification SB to provide instructions for replacement of 
each affected part fitted on an affected HR.
    For the reasons described above, this [EASA] AD retains the 
requirements of EASA AD 2016-0107, which is superseded, and requires 
the [identification and] replacement [and re-identification] of the 
affected parts.

    You may examine the MCAI in the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-
0704.

Comments

    We gave the public the opportunity to participate in developing 
this final rule. The following presents the comments received on the 
NPRM and the FAA's response to each comment.

Request To Clarify Definitions Section

    Delta Air Lines (DAL) asked that certain language related to parts 
identified in paragraphs (g)(2) through (g)(4) of the proposed AD be 
clarified. DAL recommended that all PRVs having part number (P/N) 
42F0026 and a serial number (S/N) identified in Safran Vendor Service 
Bulletin 42-29-005, Revision 01, dated September 26, 2017; and Safran 
Vendor Service Bulletin 42-29-006, Revision 01, dated September 27, 
2017; be replaced with P/N 42F0029, or re-identified as P/N 42F0030, 
regardless of the HR they are installed on. DAL stated that the 
proposed AD does not adequately address PRVs having P/N 42F0026 listed 
in the referenced Safran service information, and installed on 
unaffected HRs. DAL added that it has had PRV and HR failures and has 
removed PRVs and HRs from other locations for replacement; therefore, 
an operator could do the proposed inspections and modification, but 
negate AD compliance by removing a PRV listed in the referenced Safran 
service information and installing it on an affected HR, or removing an 
HR and installing an affected HR on an airplane with a PRV listed in 
the referenced Safran service information.
    We agree with the commenter's request to clarify certain language 
in paragraphs (g)(2) thorough (g)(4) of this AD for the reasons 
provided. Affected PRVs with a part number and serial number identified 
in Safran Vendor Service Bulletin 42-29-005, Revision 01, dated 
September 26, 2017; or Safran Vendor Service Bulletin 42-29-006, 
Revision 01, dated September 27, 2017; could be installed on an 
unaffected HR. Therefore, we have clarified the language in paragraphs 
(g)(2) thorough (g)(4) of this AD as suggested.

Request To Clarify Terminating Action

    DAL asked that the terminating action specified in paragraph (k) of 
the proposed AD be broken out into paragraphs for Groups 1 and 2 
airplanes for clarification of the terminating actions for the 
requirements of AD 2017-01-08. DAL stated that paragraph (k) of the 
proposed AD does not address PRVs installed on affected HRs having P/N 
42F0026 (units re-identified as P/N 42F0030). DAL noted that as a 
result of this, it could be interpreted that PRVs re-identified as P/N 
42F0030 are still affected by the requirements in AD 2017-01-08. DAL 
added that this does not seem to be the intent of the proposed AD.
    We agree to clarify. As stated previously, we have revised 
paragraph (g)(2) of this AD to clarify the definition of an affected 
part. As specified in paragraph (g)(4) of this AD, Group 2 airplanes do 
not have an affected part.
    We note that all affected parts must be replaced and re-identified. 
Therefore, we have clarified the terminating action specified in 
paragraph (j) of this AD (paragraph (k) of the proposed AD) to specify 
that replacing all affected parts, as required by paragraph (h) of this 
AD (paragraph (i) of the proposed AD), terminates the requirements of 
AD 2017-01-08.
    We note that re-identifying all unaffected parts is not required by 
this AD because re-identification of unaffected parts is only 
recommended for traceability purposes. Operators can choose to re-
identify unaffected parts for their own tracking purposes, but because 
these parts are unaffected, we do not require re-identification in this 
AD. This AD only specifies terminating action for AD 2017-01-08 for 
airplanes on which actions in this AD are done. For any action other 
than the replacement required by this AD, operators can request an AMOC 
to AD 2017-01-08 in accordance with the procedures specified in 
paragraph (l)(1) of AD 2017-01-08. We have not changed this AD in 
either regard.

Request To Clarify Parts Re-Identification Requirement

    DAL asked that the parts re-identification specified in paragraph 
(j)(2) of the proposed AD be clarified. DAL stated that paragraph 
(j)(2) of the proposed AD specifies re-identifying the part numbers of 
affected PRVs and HRs for Group 2 airplanes; however, paragraph (g)(4) 
of the proposed AD specifies that Group 2 airplanes do not have 
affected PRVs. DAL added that as a result of this, paragraphs (g)(2) 
and (j)(4) of the proposed AD are contradictory.
    We agree with the commenter's request. Since Group 2 airplanes by 
definition do not have affected PRVs installed, there is no need to re-
identify the part numbers. We have deleted paragraph (j)(2) of the 
proposed AD from this final rule. We have also redesignated paragraph 
(j)(1) of the proposed AD as paragraph (i) of this AD.

Additional Changes Made to This Final Rule

    We have removed paragraph (h), ``Part Number Inspection,'' of the 
proposed

[[Page 13112]]

AD from this final rule. That action is included in the procedure for 
the part re-identification required by paragraph (i) of this AD 
(paragraph (j) of the proposed AD). We have redesignated subsequent 
paragraphs of this AD accordingly.
    We have also changed ``PRV'' to ``part'' in paragraphs (g), (h), 
and (k) of this AD (paragraphs (g), (i), and (l) of the proposed AD).

Conclusion

    We reviewed the relevant data, considered the comments received, 
and determined that air safety and the public interest require adopting 
this final rule with the changes described previously and minor 
editorial changes. We have determined that these minor changes:
     Are consistent with the intent that was proposed in the 
NPRM for addressing the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM.
    We also determined that these changes will not increase the 
economic burden on any operator or increase the scope of this final 
rule.

Related Service Information Under 1 CFR Part 51

    Airbus has issued the following service information, which 
describes procedures for replacing affected PRVs and re-identifying 
affected HRs. These documents are distinct since they apply to 
different airplane models.
     Service Bulletin A330-29-3131, dated August 11, 2017.
     Service Bulletin A330-29-3132, dated August 11, 2017.
     Service Bulletin A330-29-3133, dated August 11, 2017.
     Service Bulletin A340-29-4099, dated August 11, 2017.
     Service Bulletin A340-29-4100, dated August 11, 2017.
     Service Bulletin A340-29-4101, dated August 11, 2017.
     Service Bulletin A340-29-5026, dated August 11, 2017.
    Safran has issued Vendor Service Bulletin 42-29-005, Revision 01, 
dated September 26, 2017; and Vendor Service Bulletin 42-29-006, 
Revision 01, dated September 27, 2017. This service information 
describes procedures for replacing affected PRVs, including the serial 
numbers of those PRVs. These documents are distinct since they apply to 
different airplane models.
    This service information is reasonably available because the 
interested parties have access to it through their normal course of 
business or by the means identified in the ADDRESSES section.

Costs of Compliance

    We estimate that this AD affects 103 airplanes of U.S. registry. We 
estimate the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
            Labor cost                Parts cost           Cost per product            Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
Up to 6 work-hours x $85 per hour           $3,390  Up to $3,900.................  Up to $401,700.
 = Up to $510.
----------------------------------------------------------------------------------------------------------------

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. Subtitle VII: Aviation Programs, 
describes in more detail the scope of the Agency's authority.
    We are issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701: ``General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.
    This AD is issued in accordance with authority delegated by the 
Executive Director, Aircraft Certification Service, as authorized by 
FAA Order 8000.51C. In accordance with that order, issuance of ADs is 
normally a function of the Compliance and Airworthiness Division, but 
during this transition period, the Executive Director has delegated the 
authority to issue ADs applicable to transport category airplanes and 
associated appliances to the Director of the System Oversight Division.

Regulatory Findings

    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):

2019-06-03 Airbus SAS: Amendment 39-19601; Docket No. FAA-2018-0704; 
Product Identifier 2018-NM-066-AD.

(a) Effective Date

    This AD is effective May 9, 2019.

(b) Affected ADs

    This AD affects AD 2017-01-08, Amendment 39-18775 (82 FR 1593, 
January 6, 2017) (``AD 2017-01-08'').

(c) Applicability

    This AD applies to the airplanes identified in paragraphs 
(c)(1), (c)(2), (c)(3), (c)(4), (c)(5), and (c)(6) of this AD, 
certificated in any category, all manufacturer serial numbers.
    (1) Airbus SAS Model A330-223F and -243F airplanes.

[[Page 13113]]

    (2) Airbus SAS Model A330-201, -202, -203, -223, and -243 
airplanes.
    (3) Airbus SAS Model A330-301, -302, -303, -321, -322, -323, -
341, -342, and -343 airplanes.
    (4) Airbus SAS Model A340-211, -212, and -213 airplanes.
    (5) Airbus SAS Model A340-311, -312, and -313 airplanes.
    (6) Airbus SAS Model A340-541 and -642 airplanes.

(d) Subject

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

(e) Reason

    This AD was prompted by reports of depressurization of hydraulic 
reservoirs (HRs) caused by air leakage from the pressure relief 
valve (PRV) of the HR due to the extrusion of the O-ring seal from 
certain HR PRVs. We are issuing this AD to address air leakage from 
the HR PRV, which could lead to the loss of one or more hydraulic 
systems, with the possible loss of control of the airplane.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Definitions for This AD

    (1) Affected HRs are identified in table 1 to paragraphs (g), 
(h), and (i) of this AD.
    (2) Affected parts are PRVs that have part number (P/N) 42F0026 
and a serial number (S/N) identified in Safran Vendor Service 
Bulletin 42-29-005, Revision 01, dated September 26, 2017; and 
Safran Vendor Service Bulletin 42-29-006, Revision 01, dated 
September 27, 2017; as applicable.
    (3) Group 1 airplanes have an affected part installed.
    (4) Group 2 airplanes do not have an affected part installed. A 
Model A330 airplane on which Airbus SAS modifications 206863, 
206864, and 206965 have been embodied in production is a Group 2 
airplane, provided the airplane remains in that configuration.
    (5) In table 1 to paragraphs (g), (h), and (i) of this AD: Green 
hydraulic circuit is (G), blue hydraulic circuit is (B), and yellow 
hydraulic circuit is (Y).
[GRAPHIC] [TIFF OMITTED] TR04AP19.005

(h) Replacement

    For Group 1 airplanes: At the applicable time specified in table 
1 to paragraphs (g), (h), and (i) of this AD, replace each affected 
part in accordance with the applicable service information specified 
in paragraphs (h)(1) through (h)(7) of this AD.
    (1) Airbus Service Bulletin A330-29-3131, dated August 11, 2017.
    (2) Airbus Service Bulletin A330-29-3132, dated August 11, 2017.
    (3) Airbus Service Bulletin A330-29-3133, dated August 11, 2017.
    (4) Airbus Service Bulletin A340-29-4099, dated August 11. 2017.
    (5) Airbus Service Bulletin A340-29-4100, dated August 11, 2017.
    (6) Airbus Service Bulletin A340-29-4101, dated August 11, 2017.
    (7) Airbus Service Bulletin A340-29-5026, dated August 11, 2017.

(i) Part Re-Identification

    For Group 1 airplanes: Concurrently with the replacement of the 
affected part required by paragraph (h) of this AD, re-identify the 
part numbers of affected HRs as specified in table 1 to paragraphs 
(g), (h), and (i) of this AD, in accordance with the applicable 
service information specified in paragraphs (h)(1) through (h)(7) of 
this AD.

(j) Terminating Action for AD 2017-01-08

    Replacement of all affected parts on an airplane, as required by 
paragraph (h) of this AD, terminates all requirements of AD 2017-01-
08 for that airplane.

(k) Parts Installation Prohibition

    (1) For Group 1 airplanes: After replacement of all affected 
parts as required by paragraph (h) of this AD, do not install any 
affected part.
    (2) For Group 2 airplanes: As of the effective date of this AD, 
do not install any affected part.

(l) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, 
International Section, Transport Standards Branch, FAA, has the 
authority to approve AMOCs for this AD, if requested using the 
procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, 
send your request to your principal inspector or local Flight 
Standards District Office, as appropriate. If sending information 
directly to the International Branch, send it to the attention of 
the person identified in paragraph (m)(2) of this AD. 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.
    (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 
Section, Transport Standards Branch, FAA; or the European Aviation 
Safety Agency (EASA); or Airbus SAS'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

[[Page 13114]]

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 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.

(m) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) EASA AD 2018-0064, dated March 23, 2018, for related 
information. This MCAI may be found in the AD docket on the internet 
at http://www.regulations.gov by searching for and locating Docket 
No. FAA-2018-0704.
    (2) For more information about this AD, contact Vladimir 
Ulyanov, Aerospace Engineer, International Section, Transport 
Standards Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; 
telephone and fax: 206-231-3229.

(n) 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 A330-29-3131, dated August 11, 2017.
    (ii) Airbus Service Bulletin A330-29-3132, dated August 11, 
2017.
    (iii) Airbus Service Bulletin A330-29-3133, dated August 11, 
2017.
    (iv) Airbus Service Bulletin A340-29-4099, dated August 11, 
2017.
    (v) Airbus Service Bulletin A340-29-4100, dated August 11, 2017.
    (vi) Airbus Service Bulletin A340-29-4101, dated August 11, 
2017.
    (vii) Airbus Service Bulletin A340-29-5026, dated August 11, 
2017.
    (viii) Safran Vendor Service Bulletin 42-29-005, Revision 01, 
dated September 26, 2017.
    (ix) Safran Vendor Service Bulletin 42-29-006, Revision 01, 
dated September 27, 2017.
    (3) For Airbus service information identified in this AD, 
contact Airbus SAS, Airworthiness Office--EAL, Rond Point Emile 
Dewoitine No: 2, 31700 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) For Safran service information identified in this final 
rule, contact Safran Aero Boosters, 121 Route de Liers, 4041 Milmort 
(Herstal), Belgium; telephone: +32 4 278 8111; fax: +32 4 278 52 07; 
internet https://www.safran-aero-boosters.com, or https://www.safran-group.com/company/safran-aero-boosters.
    (5) You may view this service information at the FAA, Transport 
Standards Branch, 2200 South 216th St., Des Moines, WA. For 
information on the availability of this material at the FAA, call 
206-231-3195.
    (6) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued in Des Moines, Washington, on March 22, 2019.
Michael Kaszycki,
Acting Director, System Oversight Division, Aircraft Certification 
Service.
[FR Doc. 2019-06405 Filed 4-3-19; 8:45 am]
 BILLING CODE 4910-13-P