83 FR 31499 - Airworthiness Directives; Airbus Airplanes
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 83, Issue 130 (July 6, 2018)
Federal Aviation Administration
Federal Register Volume 83, Issue 130 (July 6, 2018)
| Page Range | 31499-31504 | |
| FR Document | 2018-14407 |
[Federal Register Volume 83, Number 130 (Friday, July 6, 2018)] [Proposed Rules] [Pages 31499-31504] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2018-14407] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2018-0583; Product Identifier 2018-NM-019-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). ----------------------------------------------------------------------- SUMMARY: We propose to supersede Airworthiness Directive (AD) 2017-16- 07, which applies to certain Airbus Model A330-200, A330-200 Freighter, A330-300, A340-500, and A340-600 series airplanes; and Model A340-313 airplanes. AD 2017-16-07 requires inspection of the fuselage bulk cargo door frames at specific locations, and corrective action if necessary. Since we issued AD 2017-16-07, it was determined that only airplanes having certain manufacturer serial numbers (MSNs) are affected by tartaric sulfuric anodizing (TSA)/chromic acid anodizing (CAA) surface treatment in the door fitting attachment holes, and that airplanes having certain MSNs were excluded. This proposed AD is intended to complete certain mandated programs intended to support the airplane reaching its limit of validity (LOV) of the engineering data that support the established structural maintenance program. This proposed AD would require new inspections of certain attachment holes for residual surface treatment and cracking, and corrective action if necessary; and would provide an optional terminating action for the inspections. The proposed AD would also revise the applicability to add certain airplanes and remove others. We are proposing this AD to address the unsafe condition on these products. DATES: We must receive comments on this proposed AD by August 20, 2018. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, 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: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this NPRM, contact Airbus SAS, Airworthiness Office--EAL, 2 Rond-Point Emile Dewoitine, 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. You may view this referenced service information at the FAA, Transport Standards Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206-231-3195. 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- 0583; 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 NPRM, 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: Vladimir Ulyanov, Aerospace Engineer, International Section, Transport Standards Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone and fax 206-231-3229. [[Page 31500]] 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-2018-0583; Product Identifier 2018-NM-019-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 As described in FAA Advisory Circular 120-104 (http://www.faa.gov/documentLibrary/media/Advisory_Circular/120-104.pdf), several programs have been developed to support initiatives that will ensure the continued airworthiness of aging airplane structure. The last element of those initiatives is the requirement to establish a limit of validity (LOV) of the engineering data that support the structural maintenance program under 14 CFR 26.21. This proposed AD is the result of an assessment of the previously established programs by the design approval holder (DAH) during the process of establishing the LOV for the affected airplanes. The actions specified in this proposed AD are necessary to complete certain programs to ensure the continued airworthiness of aging airplane structure and to support an airplane reaching its LOV. We issued AD 2017-16-07, Amendment 39-18984 (82 FR 41874, September 5, 2017) (``AD 2017-16-07''), for all Airbus Model A330-200, A330-200 Freighter, A330-300, A340-500, and A340-600 series airplanes; and Model A340-313 airplanes. AD 2017-16-07 requires inspection of the fuselage bulk cargo door frames at specific locations, and corrective action if necessary. AD 2017-16-07 resulted from the discovery of TSA/CAA surface treatment in certain bulk cargo door frame holes of airplanes with MSNs 0400 and higher. We issued AD 2017-16-07 to detect and correct fatigue cracks in the bulk cargo door frames, caused by TSA/CAA surface treatment in certain bulk cargo door frame holes. Cracks in the bulk cargo door frames can cause the in-flight loss of a bulk cargo door, damage to the airplane, and subsequent reduced control of the airplane. Actions Since AD 2017-16-07 Was Issued Since we issued AD 2017-16-07, it was determined that only airplanes having manufacturer serial numbers (MSNs) 0400 through 1779 are affected by TSA/CAA surface treatment in the door fitting attachment holes due to fatigue. However, it was also determined that airplanes having MSN 0001 to MSN 0399 are affected in the same attachment holes due to a fatigue issue, therefore, the same inspections must also be accomplished on these airplanes. In addition, based on inspection results and calculations, Airbus also redefined the inspection thresholds and intervals. Airbus determined that these actions should not be required for Model A340-500 and -600 airplanes because the unsafe condition would only develop beyond the design service goal of these airplanes. Additionally, Airbus developed an optional terminating modification. The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Union, has issued EASA AD 2018-0005, dated January 10, 2018 (referred to after this as the Mandatory Continuing Airworthiness Information, or ``the MCAI''), to correct an unsafe condition for certain Airbus Model A330-200, A330-200 Freighter, and A330-300 series airplanes, and Model A340-200 and A340- 300 series airplanes. The MCAI states: In the frame of the certification of the A330 Extended Service Goal exercise, it was identified that Tartaric Sulfuric Anodising (TSA) or Chromic Acid Anodising (CAA) surface treatment is present in some frame holes, from aeroplane MSN [manufacturer serial number] 0400 and later MSN, following production process modification. On bulk cargo door frames (FR) 67 and FR 69 right hand (RH) side, the door fitting attachment holes have this TSA or CAA treatment, which leads to a detrimental effect on fatigue behaviour. This condition, if not detected and corrected, could lead to cracks in the primary structure, possibly resulting in in-flight loss of a bulk cargo door, consequent decompression and potential damage to, and reduced control of, the aeroplane. To initially address this potential unsafe condition, Airbus issued Alert Operators Transmission (AOT) A53L012-16 to provide instructions to inspect the fuselage bulk cargo door frames at specific locations. Consequently, EASA issued AD 2016-0102 [which corresponds to FAA AD 2017-16-07], requiring repetitive non- destructive test (rototest and high-frequency eddy-current (HFEC)) inspection or visual detailed (DET) inspections [to detect cracking] of the affected areas, and, depending on findings, accomplishment of a repair. Since that [EASA] AD was issued, it was determined that only aeroplanes from MSN 0400 to MSN 1779 are affected by CAA or TSA surface treatment issue in the door fitting attachment holes. However, it was also determined that aeroplanes MSN 0001 to MSN 0399 are affected in the same attachment holes due to a fatigue issue, therefore, the same inspections must also be accomplished on these aeroplanes. In addition, based on inspection results and calculation, Airbus redefined inspection thresholds and intervals, depending on aeroplane type, model and utilisation. Airbus published SB A330-53-3278 and SB A340-53-4239 providing the inspection instructions at the specific locations with extended inspection thresholds and intervals. Airbus also determined that the actions should not be required for A340-500 and -600 models, as for these aeroplanes, the unsafe condition would only develop beyond the Design Service Goal of these aeroplanes. Finally, Airbus developed modification (mod) 206409 and published associated SB A330-53-3275 and SB A340-53-4238, as applicable, as optional terminating action. For the reasons described above, this [EASA] AD retains the requirements of EASA AD 2016-0102, which is superseded, expands the Applicability and requires redefined repetitive inspections of the holes at the upper and lower door support fittings of FR 67 and FR 69 RH and the holes at door latch fitting of FR 69 RH. This [EASA] AD also introduces an optional modification, which constitutes terminating action for the repetitive inspections as required by this [EASA] AD. The optional modification involves related investigative actions of eddy current rotating probe testing for cracks of the support fittings and the frame holes at frame (FR) 67 and FR 69. 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-2018-0583. Related Service Information Under 1 CFR Part 51 Airbus has issued the following service information. Service Bulletin A330-53-3275, dated August 22, 2017. Service Bulletin A330-53-3278, dated August 22, 2017. Service Bulletin A340-53-4238, dated September 8, 2017. Service Bulletin A340-53-4239, dated September 5, 2017. Airbus Service Bulletins A330-53-3278 and A340-53-4239 describe procedures for rototest, HFEC/ultrasonic and detailed inspections for residual surface treatment and cracking of the upper and lower right- hand fuselage [[Page 31501]] bulk cargo door support fitting attachment holes at FR 67 and FR 69 and the right-hand fuselage bulk cargo door latch fitting attachment holes at FR 69. Airbus Service Bulletins A330-53-3275 and A340-53-4238 describe procedures for a modification, which includes eddy current rotating probe testing for cracks of the support fittings and the frame holes at FR 67 and FR 69, and removal of TSA or CAA in the final holes of the bulk door frames FR 67 and FR 69. 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. FAA's Determination and Requirements of This Proposed AD Although this proposed AD does not explicitly restate the actions that are part of the requirements of AD 2017-16-07, this proposed AD would retain those required actions. Those actions are referenced in the service information identified above. 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 these same type designs. Costs of Compliance We estimate that this proposed AD affects 102 airplanes of U.S. registry. We estimate the following costs to comply with this proposed AD: Estimated Costs ---------------------------------------------------------------------------------------------------------------- Action Labor cost Parts cost Cost per product Cost on U.S. operators ---------------------------------------------------------------------------------------------------------------- Inspections and modification... Up to 40 work- $5,100 Up to $8,500..... Up to $867,000. hours x $85 per hour = $3,400. ---------------------------------------------------------------------------------------------------------------- We have received no definitive data that would enable us to provide cost estimates for the on-condition actions specified in this proposed AD. 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 proposed 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 to the Director of the System Oversight Division. 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 Directive (AD) 2017-16-07, Amendment 39-18984 (82 FR 41874, September 5, 2017), and adding the following new AD: Airbus: Docket No. FAA-2018-0583; Product Identifier 2018-NM-019-AD. (a) Comments Due Date We must receive comments by August 20, 2018. (b) Affected ADs This AD replaces AD 2017-16-07, Amendment 39-18984 (82 FR 41874, September 5, 2017) (``AD 2017-16-07''). (c) Applicability This AD applies to the following Airbus airplanes, certificated in any category, manufacturer serial numbers (MSNs) 0001 to 1779 inclusive; except airplanes on which Airbus Service Bulletin A330- 53-3275 or Airbus Service Bulletin A340-53-4238 has been embodied. (1) Airbus Model A330-201, -202, -203, -223, and -243 airplanes. (2) Airbus Model A330-223F and -243F airplanes. (3) Airbus Model A330-301, -302, -303, -321, -322, -323, -341, - 342, and -343 airplanes. (4) Airbus Model A340-211, -212, and -213 airplanes. (5) Airbus Model A340-311, -312, and -313 airplanes. (d) Subject Air Transport Association (ATA) of America Code 53, Fuselage. (e) Reason This AD is prompted by a determination that only airplanes having certain [[Page 31502]] manufacturer serial numbers (MSNs) are affected by tartaric sulfuric anodizing (TSA)/chromic acid anodizing (CAA) surface treatment in the door fitting attachment holes, and that airplanes having certain MSNs were excluded from AD 2017-16-07. This AD is intended to complete certain mandated programs intended to support the airplane reaching its limit of validity (LOV) of the engineering data that support the established structural maintenance program. We are issuing this AD to detect and correct fatigue cracks in the bulk cargo door frames, caused by TSA/CAA surface treatment in certain bulk cargo door frame holes. Cracks in the bulk cargo door frames can cause the in-flight loss of a bulk cargo door, damage to the airplane, and subsequent reduced control of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Repetitive Inspections Before exceeding the thresholds specified in table 1 to paragraph (g) of this AD, or within the applicable time specified in paragraph (g)(1) or (g)(2) of this AD, whichever is later: Do a rototest, high frequency eddy current (HFEC), ultrasonic, or detailed inspection, as applicable, for residual surface treatment and cracking of the upper and lower right-hand fuselage bulk cargo door support fitting attachment holes at FR 67 and FR 69 and the right-hand fuselage bulk cargo door latch fitting attachment holes at FR 69, in accordance with the Accomplishment Instructions of Airbus Service Bulletin A330-53-3278, dated August 22, 2017, or Airbus Service Bulletin A340-53-4239, dated September 5, 2017; as applicable. Thereafter, depending on the areas and inspection methods as defined in table 2 to paragraph (g) of this AD, repeat the inspection at intervals not exceeding those specified in table 3 to paragraph (g) of this AD. (1) For airplanes having MSN 0001 through 0399 inclusive: Within 200 flight cycles after the effective date of this AD. (2) For airplanes having MSN 0400 through 1779 inclusive: Within 800 flight cycles after the effective date of this AD. BILLING CODE 4910-13-P [GRAPHIC] [TIFF OMITTED] TP06JY18.007 [[Page 31503]] [GRAPHIC] [TIFF OMITTED] TP06JY18.021 [GRAPHIC] [TIFF OMITTED] TP06JY18.008 BILLING CODE 4910-13-C (h) Corrective Action If any discrepancy is found during any inspection required by paragraph (g) of this AD, before further flight, repair using a method approved by the Manager, International Section, Transport Standards Branch, 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. (i) Non-Terminating Action for Repairs Accomplishment of a repair on an airplane, as required by paragraph (h) of this AD, does not constitute terminating action for the inspections required by paragraph (g) of this AD for that airplane, unless otherwise specified in repair instructions approved by the Manager, International Section, Transport Standards Branch, FAA; or EASA; or Airbus's EASA DOA. If approved by the DOA, the approval must include the DOA-authorized signature. (j) Optional Terminating Action Accomplishment of the modification, including applicable related investigative and corrective actions and removal of TSA or CAA in the final holes of the bulk door frames FR 67 and FR 69, as applicable, specified in, and in accordance with Airbus Service Bulletin A330-53-3275, dated August 22, 2017, or Airbus Service Bulletin A340-53-4238, dated September 8, 2017, as applicable, constitutes terminating action for the inspections required by paragraph (g) of this AD for that airplane, unless otherwise specified in the repair instructions approved by the Manager, International Section, Transport Standards Branch, FAA; or EASA; or Airbus's EASA DOA. If approved by the DOA, the approval must include the DOA-authorized signature. [[Page 31504]] (k) Credit for Previous Actions This paragraph provides credit for the actions required by paragraph (g) of this AD if those actions were performed before the effective date of this AD using Airbus All Operators Telex (AOT) A53L012-16, dated May 30, 2016, or Revision 1, dated March 9, 2017. (l) Other FAA AD Provisions (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 manager of the International Section, 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: 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, International Section, Transport Standards Branch, FAA; or the EASA; or EASA DOA. If approved by the DOA, the approval must include the DOA-authorized signature. (m) Related Information (1) Refer to Mandatory Continuing Airworthiness Information (MCAI) EASA AD 2018-0005, dated January 10, 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-2018-0583. (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. (3) For service information identified in this AD, contact Airbus SAS, Airworthiness Office--EAL, 2 Rond-Point Emile Dewoitine, 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. 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. Issued in Des Moines, Washington, on June 22, 2018. Michael Kaszycki, Acting Director, System Oversight Division, Aircraft Certification Service. [FR Doc. 2018-14407 Filed 7-5-18; 8:45 am] BILLING CODE 4910-13-P
![Federal Register / Vol. 83, No. 130 / Friday, July 6, 2018 / Proposed Rules 31499
at the time specified in Maintenance Review Aviation Safety Section, FAA, Boston ACO the engineering data that support the
Board Task 5220/12 (‘‘Servicing of Forward Branch, 1200 District Avenue, Burlington, established structural maintenance
RH Emergency Exit Mechanisms’’) of the MA 01803; telephone: 781–238–7757; fax: program. This proposed AD would
DHC–8–300 Series Maintenance PSM 1–83– 781–238–7199; email: neil.doh@faa.gov. require new inspections of certain
7, or within 60 days after the effective date (3) For information about AMOCs, contact
of this AD, whichever occurs later. Cesar Gomez, Aerospace Engineer, Airframe
attachment holes for residual surface
and Mechanical Systems Section, FAA, New treatment and cracking, and corrective
(h) Inspection and Replacement action if necessary; and would provide
York ACO Branch, 1600 Stewart Avenue,
Within 5,000 flight hours or 36 months, Suite 410, Westbury, NY 11590; telephone: an optional terminating action for the
whichever occurs first, after the effective date 516–228–7318; fax: 516–794–5531. inspections. The proposed AD would
of this AD: Do a detailed inspection of all ball (4) For service information identified in also revise the applicability to add
bearings of the forward right-hand type I this AD, contact Bombardier, Inc., Q-Series certain airplanes and remove others. We
emergency exit for corrosion, seal damage, Technical Help Desk, 123 Garratt Boulevard, are proposing this AD to address the
and loss of lubricant; replace bearings as Toronto, Ontario M3K 1Y5, Canada;
applicable; and apply corrosion inhibiting unsafe condition on these products.
telephone 416–375–4000; fax 416–375–4539;
compound (CIC); in accordance with the email thd.qseries@aero.bombardier.com; DATES: We must receive comments on
Accomplishment Instructions of Bombardier internet http://www.bombardier.com. You this proposed AD by August 20, 2018.
Service Bulletin 8–52–65, dated July 26, may view this service information at the ADDRESSES: You may send comments,
2017. Do all applicable replacements before FAA, Transport Standards Branch, 2200 using the procedures found in 14 CFR
further flight. South 216th St., Des Moines, WA. For 11.43 and 11.45, by any of the following
(i) No Alternative Actions or Intervals information on the availability of this methods:
After the maintenance or inspection
material at the FAA, call 206–231–3195. • Federal eRulemaking Portal: Go to
program has been revised as required by Issued in Des Moines, Washington, on June http://www.regulations.gov. Follow the
paragraph (g) of this AD, no alternative 26, 2018. instructions for submitting comments.
actions (e.g., inspections) or intervals may be Dionne Palermo, • Fax: 202–493–2251.
used unless the actions and intervals are Acting Director, System Oversight Division, • Mail: U.S. Department of
approved as an alternative method of Aircraft Certification Service. Transportation, Docket Operations, M–
compliance (AMOC) in accordance with the 30, West Building Ground Floor, Room
procedures specified in paragraph (j)(1) of [FR Doc. 2018–14415 Filed 7–5–18; 8:45 am]
W12–140, 1200 New Jersey Avenue SE,
this AD. BILLING CODE 4910–13–P
Washington, DC 20590.
(j) Other FAA AD Provisions • Hand Delivery: Deliver to Mail
The following provisions also apply to this DEPARTMENT OF TRANSPORTATION address above between 9 a.m. and 5
AD: p.m., Monday through Friday, except
(1) Alternative Methods of Compliance Federal Aviation Administration Federal holidays.
(AMOCs): The Manager, New York ACO For service information identified in
Branch, FAA, has the authority to approve 14 CFR Part 39 this NPRM, contact Airbus SAS,
AMOCs for this AD, if requested using the Airworthiness Office—EAL, 2 Rond-
procedures found in 14 CFR 39.19. In [Docket No. FAA–2018–0583; Product Point Emile Dewoitine, 31700 Blagnac
accordance with 14 CFR 39.19, send your Identifier 2018–NM–019–AD] Cedex, France; telephone +33 5 61 93 36
request to your principal inspector or local
RIN 2120–AA64 96; fax +33 5 61 93 45 80; email
Flight Standards District Office, as
appropriate. If sending information directly airworthiness.A330-A340@airbus.com;
to the manager of the certification office, Airworthiness Directives; Airbus internet http://www.airbus.com. You
send it to ATTN: Program Manager, Airplanes may view this referenced service
Continuing Operational Safety, FAA, New information at the FAA, Transport
York ACO Branch, 1600 Stewart Avenue, AGENCY: Federal Aviation Standards Branch, 2200 South 216th St.,
Suite 410, Westbury, NY 11590; telephone Administration (FAA), DOT. Des Moines, WA. For information on the
516–228–7300; fax 516–794–5531. Before ACTION: Notice of proposed rulemaking availability of this material at the FAA,
using any approved AMOC, notify your (NPRM). call 206–231–3195.
appropriate principal inspector, or lacking a
principal inspector, the manager of the local SUMMARY: We propose to supersede Examining the AD Docket
flight standards district office/certificate
Airworthiness Directive (AD) 2017–16– You may examine the AD docket on
holding district office.
(2) Contacting the Manufacturer: For any 07, which applies to certain Airbus the internet at http://
requirement in this AD to obtain corrective Model A330–200, A330–200 Freighter, www.regulations.gov by searching for
actions from a manufacturer, the action must A330–300, A340–500, and A340–600 and locating Docket No. FAA–2018–
be accomplished using a method approved series airplanes; and Model A340–313 0583; or in person at the Docket
by the Manager, New York ACO Branch, airplanes. AD 2017–16–07 requires Management Facility between 9 a.m.
FAA; or Transport Canada Civil Aviation inspection of the fuselage bulk cargo and 5 p.m., Monday through Friday,
(TCCA); or Bombardier, Inc.’s TCCA Design door frames at specific locations, and except Federal holidays. The AD docket
Approval Organization (DAO). If approved by contains this NPRM, the regulatory
corrective action if necessary. Since we
the DAO, the approval must include the
DAO-authorized signature. issued AD 2017–16–07, it was evaluation, any comments received, and
determined that only airplanes having other information. The street address for
(k) Related Information certain manufacturer serial numbers the Docket Operations office (telephone
(1) Refer to Mandatory Continuing (MSNs) are affected by tartaric sulfuric 800–647–5527) is in the ADDRESSES
daltland on DSKBBV9HB2PROD with PROPOSALS
Airworthiness Information (MCAI) Canadian anodizing (TSA)/chromic acid section. Comments will be available in
Airworthiness Directive CF–2017–30, dated anodizing (CAA) surface treatment in the AD docket shortly after receipt.
August 30, 2017, for related information. the door fitting attachment holes, and FOR FURTHER INFORMATION CONTACT:
This MCAI may be found in the AD docket
on the internet at http://www.regulations.gov that airplanes having certain MSNs were Vladimir Ulyanov, Aerospace Engineer,
by searching for and locating Docket No. excluded. This proposed AD is intended International Section, Transport
FAA–2018–0586. to complete certain mandated programs Standards Branch, FAA, 2200 South
(2) For more information about this AD, intended to support the airplane 216th St., Des Moines, WA 98198;
contact Neil Doh, Aerospace Engineer, reaching its limit of validity (LOV) of telephone and fax 206–231–3229.
VerDate Sep<11>2014 17:10 Jul 05, 2018 Jkt 244001 PO 00000 Frm 00029 Fmt 4702 Sfmt 4702 E:\FR\FM\06JYP1.SGM 06JYP1](https://thefederalregister.org/doc/83_FR_31629/page/1.svg)
![31500 Federal Register / Vol. 83, No. 130 / Friday, July 6, 2018 / Proposed Rules
SUPPLEMENTARY INFORMATION: cause the in-flight loss of a bulk cargo (rototest and high-frequency eddy-current
door, damage to the airplane, and (HFEC)) inspection or visual detailed (DET)
Comments Invited inspections [to detect cracking] of the
subsequent reduced control of the
We invite you to send any written affected areas, and, depending on findings,
airplane.
relevant data, views, or arguments about accomplishment of a repair.
Actions Since AD 2017–16–07 Was Since that [EASA] AD was issued, it was
this proposed AD. Send your comments determined that only aeroplanes from MSN
to an address listed under the Issued
0400 to MSN 1779 are affected by CAA or
ADDRESSES section. Include ‘‘Docket No. Since we issued AD 2017–16–07, it TSA surface treatment issue in the door
FAA–2018–0583; Product Identifier was determined that only airplanes fitting attachment holes. However, it was also
2018–NM–019–AD’’ at the beginning of having manufacturer serial numbers determined that aeroplanes MSN 0001 to
your comments. We specifically invite (MSNs) 0400 through 1779 are affected MSN 0399 are affected in the same
comments on the overall regulatory, by TSA/CAA surface treatment in the attachment holes due to a fatigue issue,
economic, environmental, and energy door fitting attachment holes due to therefore, the same inspections must also be
aspects of this proposed AD. We will accomplished on these aeroplanes. In
fatigue. However, it was also addition, based on inspection results and
consider all comments received by the determined that airplanes having MSN calculation, Airbus redefined inspection
closing date and may amend this 0001 to MSN 0399 are affected in the thresholds and intervals, depending on
proposed AD based on those comments. same attachment holes due to a fatigue aeroplane type, model and utilisation. Airbus
We will post all comments we issue, therefore, the same inspections published SB A330–53–3278 and SB A340–
receive, without change, to http:// must also be accomplished on these 53–4239 providing the inspection
www.regulations.gov, including any airplanes. In addition, based on instructions at the specific locations with
personal information you provide. We inspection results and calculations, extended inspection thresholds and intervals.
will also post a report summarizing each Airbus also redefined the inspection Airbus also determined that the actions
substantive verbal contact we receive should not be required for A340–500 and
thresholds and intervals. Airbus –600 models, as for these aeroplanes, the
about this proposed AD. determined that these actions should unsafe condition would only develop beyond
Discussion not be required for Model A340–500 the Design Service Goal of these aeroplanes.
and –600 airplanes because the unsafe Finally, Airbus developed modification
As described in FAA Advisory
condition would only develop beyond (mod) 206409 and published associated SB
Circular 120–104 (http://www.faa.gov/
the design service goal of these A330–53–3275 and SB A340–53–4238, as
documentLibrary/media/Advisory_ applicable, as optional terminating action.
airplanes. Additionally, Airbus
Circular/120-104.pdf), several programs For the reasons described above, this
developed an optional terminating
have been developed to support [EASA] AD retains the requirements of EASA
modification.
initiatives that will ensure the The European Aviation Safety Agency AD 2016–0102, which is superseded,
continued airworthiness of aging (EASA), which is the Technical Agent
expands the Applicability and requires
airplane structure. The last element of redefined repetitive inspections of the holes
for the Member States of the European at the upper and lower door support fittings
those initiatives is the requirement to Union, has issued EASA AD 2018–0005,
establish a limit of validity (LOV) of the of FR 67 and FR 69 RH and the holes at door
dated January 10, 2018 (referred to after latch fitting of FR 69 RH. This [EASA] AD
engineering data that support the this as the Mandatory Continuing also introduces an optional modification,
structural maintenance program under Airworthiness Information, or ‘‘the which constitutes terminating action for the
14 CFR 26.21. This proposed AD is the MCAI’’), to correct an unsafe condition repetitive inspections as required by this
result of an assessment of the previously for certain Airbus Model A330–200, [EASA] AD.
established programs by the design A330–200 Freighter, and A330–300 The optional modification involves
approval holder (DAH) during the series airplanes, and Model A340–200 related investigative actions of eddy
process of establishing the LOV for the and A340–300 series airplanes. The current rotating probe testing for cracks
affected airplanes. The actions specified MCAI states: of the support fittings and the frame
in this proposed AD are necessary to
In the frame of the certification of the A330 holes at frame (FR) 67 and FR 69. You
complete certain programs to ensure the
Extended Service Goal exercise, it was may examine the MCAI in the AD
continued airworthiness of aging
identified that Tartaric Sulfuric Anodising docket on the internet at http://
airplane structure and to support an (TSA) or Chromic Acid Anodising (CAA) www.regulations.gov by searching for
airplane reaching its LOV. surface treatment is present in some frame
We issued AD 2017–16–07, and locating Docket No. FAA–2018–
holes, from aeroplane MSN [manufacturer 0583.
Amendment 39–18984 (82 FR 41874, serial number] 0400 and later MSN,
September 5, 2017) (‘‘AD 2017–16–07’’), following production process modification. Related Service Information Under 1
for all Airbus Model A330–200, A330– On bulk cargo door frames (FR) 67 and FR CFR Part 51
200 Freighter, A330–300, A340–500, 69 right hand (RH) side, the door fitting
attachment holes have this TSA or CAA Airbus has issued the following
and A340–600 series airplanes; and service information.
Model A340–313 airplanes. AD 2017– treatment, which leads to a detrimental effect
on fatigue behaviour. • Service Bulletin A330–53–3275,
16–07 requires inspection of the This condition, if not detected and dated August 22, 2017.
fuselage bulk cargo door frames at corrected, could lead to cracks in the primary • Service Bulletin A330–53–3278,
specific locations, and corrective action structure, possibly resulting in in-flight loss dated August 22, 2017.
if necessary. AD 2017–16–07 resulted of a bulk cargo door, consequent • Service Bulletin A340–53–4238,
from the discovery of TSA/CAA surface decompression and potential damage to, and dated September 8, 2017.
daltland on DSKBBV9HB2PROD with PROPOSALS
treatment in certain bulk cargo door reduced control of, the aeroplane. • Service Bulletin A340–53–4239,
frame holes of airplanes with MSNs To initially address this potential unsafe dated September 5, 2017.
0400 and higher. We issued AD 2017– condition, Airbus issued Alert Operators Airbus Service Bulletins A330–53–
Transmission (AOT) A53L012–16 to provide
16–07 to detect and correct fatigue instructions to inspect the fuselage bulk 3278 and A340–53–4239 describe
cracks in the bulk cargo door frames, cargo door frames at specific locations. procedures for rototest, HFEC/ultrasonic
caused by TSA/CAA surface treatment Consequently, EASA issued AD 2016–0102 and detailed inspections for residual
in certain bulk cargo door frame holes. [which corresponds to FAA AD 2017–16–07], surface treatment and cracking of the
Cracks in the bulk cargo door frames can requiring repetitive non-destructive test upper and lower right-hand fuselage
VerDate Sep<11>2014 17:10 Jul 05, 2018 Jkt 244001 PO 00000 Frm 00030 Fmt 4702 Sfmt 4702 E:\FR\FM\06JYP1.SGM 06JYP1](https://thefederalregister.org/doc/83_FR_31629/page/2.svg)
![Federal Register / Vol. 83, No. 130 / Friday, July 6, 2018 / Proposed Rules 31501
bulk cargo door support fitting through their normal course of business bilateral agreement with the State of
attachment holes at FR 67 and FR 69 or by the means identified in the Design Authority, we have been notified
and the right-hand fuselage bulk cargo ADDRESSES section. of the unsafe condition described in the
door latch fitting attachment holes at FR MCAI and service information
FAA’s Determination and Requirements
69. Airbus Service Bulletins A330–53– referenced above. We are proposing this
3275 and A340–53–4238 describe of This Proposed AD
AD because we evaluated all pertinent
procedures for a modification, which Although this proposed AD does not information and determined an unsafe
includes eddy current rotating probe explicitly restate the actions that are condition exists and is likely to exist or
testing for cracks of the support fittings part of the requirements of AD 2017– develop on other products of these same
and the frame holes at FR 67 and FR 69, 16–07, this proposed AD would retain
type designs.
and removal of TSA or CAA in the final those required actions. Those actions
holes of the bulk door frames FR 67 and are referenced in the service information Costs of Compliance
FR 69. These documents are distinct identified above.
since they apply to different airplane This product has been approved by We estimate that this proposed AD
models. This service information is the aviation authority of another affects 102 airplanes of U.S. registry. We
reasonably available because the country, and is approved for operation estimate the following costs to comply
interested parties have access to it in the United States. Pursuant to our with this proposed AD:
ESTIMATED COSTS
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
Inspections and modification ........ Up to 40 work-hours × $85 per $5,100 Up to $8,500 ............................... Up to $867,000.
hour = $3,400.
We have received no definitive data Regulatory Findings Authority: 49 U.S.C. 106(g), 40113, 44701.
that would enable us to provide cost We determined that this proposed AD § 39.13 [Amended]
estimates for the on-condition actions would not have federalism implications
specified in this proposed AD. ■ 2. The FAA amends § 39.13 by
under Executive Order 13132. This removing Airworthiness Directive (AD)
Authority for This Rulemaking proposed AD would not have a 2017–16–07, Amendment 39–18984 (82
substantial direct effect on the States, on FR 41874, September 5, 2017), and
Title 49 of the United States Code
the relationship between the national adding the following new AD:
specifies the FAA’s authority to issue
Government and the States, or on the
rules on aviation safety. Subtitle I, Airbus: Docket No. FAA–2018–0583; Product
distribution of power and Identifier 2018–NM–019–AD.
section 106, describes the authority of
responsibilities among the various
the FAA Administrator. Subtitle VII: (a) Comments Due Date
levels of government.
Aviation Programs, describes in more We must receive comments by August 20,
For the reasons discussed above, I
detail the scope of the Agency’s 2018.
certify this proposed regulation:
authority.
1. Is not a ‘‘significant regulatory (b) Affected ADs
We are issuing this rulemaking under
action’’ under Executive Order 12866, This AD replaces AD 2017–16–07,
the authority described in Subtitle VII,
2. Is not a ‘‘significant rule’’ under the Amendment 39–18984 (82 FR 41874,
Part A, Subpart III, Section 44701:
DOT Regulatory Policies and Procedures September 5, 2017) (‘‘AD 2017–16–07’’).
‘‘General requirements.’’ Under that
(44 FR 11034, February 26, 1979),
section, Congress charges the FAA with (c) Applicability
promoting safe flight of civil aircraft in 3. Will not affect intrastate aviation in
Alaska, and This AD applies to the following Airbus
air commerce by prescribing regulations airplanes, certificated in any category,
for practices, methods, and procedures 4. Will not have a significant manufacturer serial numbers (MSNs) 0001 to
the Administrator finds necessary for economic impact, positive or negative, 1779 inclusive; except airplanes on which
safety in air commerce. This regulation on a substantial number of small entities Airbus Service Bulletin A330–53–3275 or
is within the scope of that authority under the criteria of the Regulatory Airbus Service Bulletin A340–53–4238 has
Flexibility Act. been embodied.
because it addresses an unsafe condition (1) Airbus Model A330–201, –202, –203,
that is likely to exist or develop on List of Subjects in 14 CFR Part 39 –223, and –243 airplanes.
products identified in this rulemaking (2) Airbus Model A330–223F and –243F
Air transportation, Aircraft, Aviation
action. airplanes.
safety, Incorporation by reference, (3) Airbus Model A330–301, –302, –303,
This proposed AD is issued in
Safety. –321, –322, –323, –341, –342, and –343
accordance with authority delegated by
the Executive Director, Aircraft The Proposed Amendment airplanes.
(4) Airbus Model A340–211, –212, and
Certification Service, as authorized by Accordingly, under the authority –213 airplanes.
FAA Order 8000.51C. In accordance delegated to me by the Administrator, (5) Airbus Model A340–311, –312, and
daltland on DSKBBV9HB2PROD with PROPOSALS
with that order, issuance of ADs is the FAA proposes to amend 14 CFR part –313 airplanes.
normally a function of the Compliance 39 as follows: (d) Subject
and Airworthiness Division, but during
this transition period, the Executive Air Transport Association (ATA) of
PART 39—AIRWORTHINESS America Code 53, Fuselage.
Director has delegated the authority to DIRECTIVES
issue ADs applicable to transport (e) Reason
category airplanes to the Director of the ■ 1. The authority citation for part 39 This AD is prompted by a determination
System Oversight Division. continues to read as follows: that only airplanes having certain
VerDate Sep<11>2014 17:10 Jul 05, 2018 Jkt 244001 PO 00000 Frm 00031 Fmt 4702 Sfmt 4702 E:\FR\FM\06JYP1.SGM 06JYP1](https://thefederalregister.org/doc/83_FR_31629/page/3.svg)
![31504 Federal Register / Vol. 83, No. 130 / Friday, July 6, 2018 / Proposed Rules
(k) Credit for Previous Actions DEPARTMENT OF TRANSPORTATION http://www.bombardier.com. You may
This paragraph provides credit for the view this service information at the
actions required by paragraph (g) of this AD Federal Aviation Administration FAA, Transport Standards Branch, 2200
if those actions were performed before the South 216th St., Des Moines, WA. For
effective date of this AD using Airbus All 14 CFR Part 39 information on the availability of this
Operators Telex (AOT) A53L012–16, dated material at the FAA, call 206–231–3195.
May 30, 2016, or Revision 1, dated March 9, [Docket No. FAA–2018–0551; Product
Identifier 2018–NM–023–AD] Examining the AD Docket
2017.
(l) Other FAA AD Provisions RIN 2120–AA64 You may examine the AD docket on
the internet at http://
(1) Alternative Methods of Compliance Airworthiness Directives; Bombardier, www.regulations.gov by searching for
(AMOCs): The Manager, International Inc.
Section, Transport Standards Branch, FAA,
and locating Docket No. FAA–2018–
has the authority to approve AMOCs for this AGENCY: Federal Aviation 0551; or in person at the Docket
AD, if requested using the procedures found Administration (FAA), DOT. Management Facility between 9 a.m.
in 14 CFR 39.19. In accordance with 14 CFR and 5 p.m., Monday through Friday,
ACTION: Notice of proposed rulemaking
39.19, send your request to your principal except Federal holidays. The AD docket
(NPRM). contains this NPRM, the regulatory
inspector or local Flight Standards District
Office, as appropriate. If sending information SUMMARY: We propose to adopt a new evaluation, any comments received, and
directly to the manager of the International airworthiness directive (AD) for certain other information. The street address for
Section, send it to the attention of the person the Docket Operations office (telephone
Bombardier, Inc., Model CL–600–2C10
identified in paragraph (m)(2) of this AD. 800–647–5527) is in the ADDRESSES
Information may be emailed to: 9-ANM-116- (Regional Jet Series 700, 701, & 702)
airplanes; Model CL–600–2D15 section. Comments will be available in
AMOC-REQUESTS@faa.gov. Before using the AD docket shortly after receipt.
any approved AMOC, notify your appropriate (Regional Jet Series 705) airplanes;
principal inspector, or lacking a principal Model CL–600–2D24 (Regional Jet FOR FURTHER INFORMATION CONTACT:
inspector, the manager of the local flight Series 900) airplanes; and Model CL– Darren Gassetto, Aerospace Engineer,
standards district office/certificate holding 600–2E25 (Regional Jet Series 1000) Airframe and Mechanical Systems
district office. airplanes. This proposed AD was Section, FAA, New York ACO Branch,
(2) Contacting the Manufacturer: As of the prompted by reports of damage to the 1600 Stewart Avenue, Suite 410,
effective date of this AD, for any requirement protective coating and corrosion on the Westbury, NY 11590; telephone 516–
in this AD to obtain corrective actions from piston/axle of the main landing gear 228–7323; fax 516–794–5531; email 9-
a manufacturer, the action must be avs-nyaco-cos@faa.gov.
(MLG), caused by friction between the
accomplished using a method approved by SUPPLEMENTARY INFORMATION:
the Manager, International Section, Transport
inboard axle sleeve and the axle thrust
Standards Branch, FAA; or the EASA; or face. This proposed AD would require Comments Invited
EASA DOA. If approved by the DOA, the revising the maintenance or inspection
program, as applicable, to incorporate a We invite you to send any written
approval must include the DOA-authorized
detailed inspection of the MLG piston/ relevant data, views, or arguments about
signature.
axle for damage to the protective coating this proposal. Send your comments to
(m) Related Information an address listed under the ADDRESSES
and for corrosion. We are proposing this
(1) Refer to Mandatory Continuing AD to address the unsafe condition on section. Include ‘‘Docket No. FAA–
Airworthiness Information (MCAI) EASA AD these products. 2018–0551; Product Identifier 2018–
2018–0005, dated January 10, 2018, for NM–023–AD’’ at the beginning of your
DATES: We must receive comments on
related information. This MCAI may be comments. We specifically invite
found in the AD docket on the internet at this proposed AD by August 20, 2018. comments on the overall regulatory,
http://www.regulations.gov by searching for ADDRESSES: You may send comments, economic, environmental, and energy
and locating Docket No. FAA–2018–0583. using the procedures found in 14 CFR aspects of this NPRM. We will consider
(2) For more information about this AD, 11.43 and 11.45, by any of the following all comments received by the closing
contact Vladimir Ulyanov, Aerospace methods: date and may amend this NPRM based
Engineer, International Section, Transport • Federal eRulemaking Portal: Go to
Standards Branch, FAA, 2200 South 216th
on those comments.
http://www.regulations.gov. Follow the We will post all comments we
St., Des Moines, WA 98198; telephone and
fax 206–231–3229.
instructions for submitting comments. receive, without change, to http://
(3) For service information identified in • Fax: 202–493–2251. www.regulations.gov, including any
this AD, contact Airbus SAS, Airworthiness • Mail: U.S. Department of personal information you provide. We
Office—EAL, 2 Rond-Point Emile Dewoitine, Transportation, Docket Operations, will also post a report summarizing each
31700 Blagnac Cedex, France; telephone +33 M–30, West Building Ground Floor, substantive verbal contact we receive
5 61 93 36 96; fax +33 5 61 93 45 80; email Room W12–140, 1200 New Jersey about this NPRM.
airworthiness.A330-A340@airbus.com; Avenue SE, Washington, DC 20590.
internet http://www.airbus.com. You may • Hand Delivery: Deliver to Mail Discussion
view this service information at the FAA, address above between 9 a.m. and 5 Transport Canada Civil Aviation
Transport Standards Branch, 2200 South p.m., Monday through Friday, except (TCCA), which is the aviation authority
216th St., Des Moines, WA. For information Federal holidays. for Canada, has issued Canadian AD
on the availability of this material at the
FAA, call 206–231–3195.
For service information identified in CF–2017–38, dated December 20, 2017
daltland on DSKBBV9HB2PROD with PROPOSALS
this NPRM, contact Bombardier, Inc., (referred to after this as the Mandatory
Issued in Des Moines, Washington, on June 400 Côte-Vertu Road West, Dorval, Continuing Airworthiness Information,
22, 2018. Québec H4S 1Y9, Canada; Widebody or ‘‘the MCAI’’), to correct an unsafe
Michael Kaszycki, Customer Response Center North condition for certain Bombardier, Inc.,
Acting Director, System Oversight Division, America toll-free telephone 1–866–538– Model CL–600–2C10 (Regional Jet
Aircraft Certification Service. 1247 or direct-dial telephone 1–514– Series 700, 701, & 702) airplanes; Model
[FR Doc. 2018–14407 Filed 7–5–18; 8:45 am] 855–2999; fax 514–855–7401; email CL–600–2D15 (Regional Jet Series 705)
BILLING CODE 4910–13–P ac.yul@aero.bombardier.com; internet airplanes; Model CL–600–2D24
VerDate Sep<11>2014 17:10 Jul 05, 2018 Jkt 244001 PO 00000 Frm 00034 Fmt 4702 Sfmt 4702 E:\FR\FM\06JYP1.SGM 06JYP1](https://thefederalregister.org/doc/83_FR_31629/page/6.svg)
Document Created: 2018-07-06 00:46:10
Document Modified: 2018-07-06 00:46:10
| 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 August 20, 2018. | |
| 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. | |
| FR Citation | 83 FR 31499 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
2025 Federal Register | Disclaimer | Privacy Policy
USC | CFR | eCFR