Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters, 67694-67696 [2020-23446]

Download as PDF 67694 Federal Register / Vol. 85, No. 207 / Monday, October 26, 2020 / Proposed Rules Model S–61A, S–61D, S–61E, and S–61V helicopters, certificated in any category including restricted, with an arm assembly, part number S6140–62614–009, installed. (d) Subject Joint Aircraft System Component (JASC) Code 6720, Tail Rotor Control System. (e) Unsafe Condition This AD was prompted by the manufacturer determining that there may be arm assemblies in service with 15,000 or more hours time-in-service (TIS), which exceeds the life limit for this component. The FAA is issuing this AD to prevent reduced or loss of tail rotor control. This unsafe condition, if not addressed, could result in reduced control of the helicopter. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Action (1) Within 90 days after the effective date of this AD, review the mixer unit component log card or equivalent record to determine if the affected arm assembly is entered with the appropriate 15,000 hours TIS life limit. (2) If the affected arm assembly is not included on the mixer unit component log card or equivalent record, within 90 days after the effective date of this AD, add the arm assembly entry to the mixer unit component log card or equivalent record and determine the remaining life of the arm assembly using the Accomplishment Instructions, Section 3.A.(3) of Sikorsky S–61 Helicopter Alert Service Bulletin (ASB) 61B40–11, Basic Issue, dated March 2, 2020 (‘‘the ASB’’). (3) If, based on the review required by paragraphs (g)(1) and (2) of this AD, the arm assembly has accumulated 15,000 or more hours TIS, before further flight, remove the arm assembly from service. If the hours TIS for the affected arm assembly cannot be determined, before further flight, remove the affected arm assembly from service. (4) For arm assemblies that have not accumulated 15,000 or more hours TIS, thereafter, continue to determine the remaining life of the arm assembly and remove the arm assembly from service before it accumulates 15,000 hours TIS. (h) Credit for Previous Actions You may take credit for adding the arm assembly entry to the mixer unit component log card or equivalent record and determining the remaining life of the arm assembly required by paragraphs (g)(1) and (2) of this AD if you performed these actions before the effective date of this AD using Sikorsky S–61 Helicopter ASB 61B General– 1, Revision AA, dated February 24, 2020. (i) Special Flight Permit Special flight permits, as described in Section 21.197 and Section 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199), are subject to the requirements of paragraph (g)(3) of this AD. Operators who are prohibited from further flight due to exceeding the life limit in paragraph (g)(3) of VerDate Sep<11>2014 17:11 Oct 23, 2020 Jkt 253001 this AD, may only perform a maintenance check or a one-time ferry flight to a location where the affected arm assembly can be removed from service. This ferry flight must be performed with only essential flight crew. (j) Alternative Methods of Compliance (AMOCs) (1) The Manager, Boston ACO 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 certification office, send it to the attention of the person identified in paragraph (k)(1) of this AD. (2) 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. (k) Related Information (1) For more information about this AD, contact Neil Doh, Aerospace Engineer, Boston ACO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781– 238–7757; fax: 781–238–7199; email: neil.doh@faa.gov. (2) For service information identified in this AD, contact Sikorsky Aircraft Corporation, 6900 Main Street, P.O. Box 9729, Stratford, CT 06615; phone: 203–386– 4000. You may view this referenced service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N–321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 817–222– 5110. Issued on October 14, 2020. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2020–23466 Filed 10–23–20; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2020–0967; Product Identifier 2018–SW–013–AD] RIN 2120–AA64 Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: The FAA proposes to adopt a new airworthiness directive (AD) for Airbus Helicopters Deutschland GmbH Model MBB–BK117 A–1, MBB–BK117 SUMMARY: PO 00000 Frm 00011 Fmt 4702 Sfmt 4702 A–3, MBB–BK117 A–4, MBB–BK117 B– 1, MBB–BK117 B–2, MBB–BK117 C–1, and MBB–BK117 C–2 helicopters. This proposed AD would require inspecting the tail gearbox (TGB) bellcrank attachment arm (arm) for a crack. This proposed AD was prompted by a report of a cracked TGB arm. The actions of this proposed AD are intended to address an unsafe condition on these products. The FAA must receive comments on this proposed AD by December 10, 2020. ADDRESSES: You may send comments by any of the following methods: • Federal eRulemaking Docket: Go to https://www.regulations.gov. Follow the online instructions for sending your comments electronically. • Fax: 202–493–2251. • Mail: Send comments to the U.S. Department of Transportation, Docket Operations, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590–0001. • Hand Delivery: Deliver to the ‘‘Mail’’ address between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. DATES: Examining the AD Docket You may examine the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2020– 0967; 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 proposed AD, the European Aviation Safety Agency (now European Union Aviation Safety Agency) (EASA) AD, any comments received, and other information. The street address for Docket Operations is listed above. Comments will be available in the AD docket shortly after receipt. For service information identified in this proposed rule, contact Airbus Helicopters, 2701 N Forum Drive, Grand Prairie, TX 75052; telephone 972–641– 0000 or 800–232–0323; fax 972–641– 3775; or at https://www.airbus.com/ helicopters/services/technicalsupport.html. You may view the referenced service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N–321, Fort Worth, TX 76177. FOR FURTHER INFORMATION CONTACT: David Hatfield, Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX E:\FR\FM\26OCP1.SGM 26OCP1 Federal Register / Vol. 85, No. 207 / Monday, October 26, 2020 / Proposed Rules 76177; telephone 817–222–5110; email david.hatfield@faa.gov. SUPPLEMENTARY INFORMATION: Comments Invited The FAA invites you to send any written relevant data, views, or arguments about this proposal. Send your comments to an address listed under ADDRESSES. Include ‘‘Docket No. FAA–2020–0967; Product Identifier 2018–SW–013–AD’’ at the beginning of your comments. The most helpful comments reference a specific portion of the proposal, explain the reason for any recommended change, and include supporting data. The FAA will consider all comments received by the closing date and may amend this proposal because of those comments. Except for Confidential Business Information (CBI) as described in the following paragraph, and other information as described in 14 CFR 11.35, the FAA will post all comments received, without change, to https:// www.regulations.gov, including any personal information you provide. The agency will also post a report summarizing each substantive verbal contact received about this proposal. Confidential Business Information CBI is commercial or financial information that is both customarily and actually treated as private by its owner. Under the Freedom of Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public disclosure. If your comments responsive to this NPRM contain commercial or financial information that is customarily treated as private, that you actually treat as private, and that is relevant or responsive to this NPRM, it is important that you clearly designate the submitted comments as CBI. Please mark each page of your submission containing CBI as ‘‘PROPIN.’’ The FAA will treat such marked submissions as confidential under the FOIA, and they will not be placed in the public docket of this NPRM. Submissions containing CBI should be sent to David Hatfield, Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817–222–5110; email david.hatfield@faa.gov. Any commentary that the FAA receives which is not specifically designated as CBI will be placed in the public docket for this rulemaking. Discussion EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD No. 2018– VerDate Sep<11>2014 17:11 Oct 23, 2020 Jkt 253001 0046, dated February 19, 2018, to correct an unsafe condition for Airbus Helicopters Deutschland GmbH (AHD) (formerly Eurocopter Deutschland GmbH, Eurocopter Hubschrauber GmbH, Messerschmitt-Bo¨lkow-Blohm GmbH), Airbus Helicopters Inc. (formerly American Eurocopter LLC) Model MBB–BK117 A–1, MBB–BK117 A–3, MBB–BK117 A–4, MBB–BK117 B– 1, MBB–BK117 B–2, MBB–BK117 C–1, and MBB–BK117 C–2 helicopters. The EASA AD advises that a crack was detected on a Model MBB–BK117 A–4 TGB arm and that this condition, if not corrected, could result in disconnection of the arm from the TGB and possible loss of control of the helicopter. To address this unsafe condition, the EASA AD requires an inspection of the TGB arm for a crack and for surface anomalies. FAA’s Determination These helicopters have been approved by EASA and are approved for operation in the United States. Pursuant to the FAA’s bilateral agreement with the European Union, EASA has notified the FAA about the unsafe condition described in its AD. The FAA is proposing this AD after evaluating all known relevant information and determining that an unsafe condition is likely to exist or develop on other products of the same type design. Related Service Information Under 1 CFR Part 51 The FAA reviewed Airbus Helicopters Alert Service Bulletin (ASB) MBB– BK117 C–2–65A–008 for Model MBB– BK117 C–2 helicopters and ASB MBB– BK117–30A–120 for Model MBB–BK117 A–1, MBB–BK117 A–3, MBB–BK117 A– 4, MBB–BK117 B–1, MBB–BK117 B–2, and MBB–BK117 C–1 helicopters, each Revision 0 and dated January 31, 2018. The service information contains procedures for inspecting the TGB arm for a crack and surface anomalies. 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. Proposed AD Requirements This proposed AD would require the following: • Within 100 hours time-in-service, removing the surface coating from the TGB bellcrank attachment arm and using a 5X or higher power magnifying glass, dye-penetrant inspecting the TGB arm for a crack and for any dent, nick, and scratch. • If there is a crack, before further flight, replacing the TGB. PO 00000 Frm 00012 Fmt 4702 Sfmt 4702 67695 • If there is a dent, nick, or scratch, before further flight, removing the surface material up to 0.2 mm using 80grit abrasive paper and repeating the dye penetrant inspection. If there is a crack or if the damage cannot be removed, before further flight, replacing the TGB. • If there is no crack and no dent, nick, or scratch, before further flight, finishing the surface with 600-grit or finer abrasive paper. Differences Between This Proposed AD and the EASA AD The EASA AD requires operators to contact Airbus Helicopters if there is a crack or if there is damage that cannot be repaired by removing surface material. This proposed AD would require replacing the TGB instead. Costs of Compliance The FAA estimates that this proposed AD would affect 177 helicopters of U.S. Registry. Labor rates are estimated at $85 per work-hour. Based on these numbers, the FAA estimates that operators may incur the following costs in order to comply with this proposed AD. Removing the surface protection and inspecting the TGB arm for a crack would take about 2 work-hours and the cost of materials would be minimal, for an estimated cost of $170 per helicopter and $30,090 for the U.S. fleet. If required, reworking the TGB arm would take about 1 work-hour and the cost of materials would be minimal, for an estimated cost of $85 per helicopter. Replacing a TGB with a cracked arm would take about 4.5 work-hours and cost about $69,000 for required parts, for an estimated cost of $69,383 per helicopter. 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. The FAA is 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 E:\FR\FM\26OCP1.SGM 26OCP1 67696 Federal Register / Vol. 85, No. 207 / Monday, October 26, 2020 / Proposed Rules develop on products identified in this rulemaking action. Regulatory Findings The FAA 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, I certify this proposed regulation: 1. Is not a ‘‘significant regulatory action’’ under Executive Order 12866, 2. Will not affect intrastate aviation in Alaska, and 3. 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 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive: ■ Airbus Helicopters Deutschland GmbH: Docket No. FAA–2020–0967; Product Identifier 2018–SW–013–AD. (d) Compliance DEPARTMENT OF TRANSPORTATION You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time. (e) Required Actions Within 100 hours time-in-service: (1) Remove the surface coating from the TGB bellcrank attachment arm and using a 5X or higher power magnifying glass, dyepenetrant inspect the TGB arm for a crack and for any dent, nick, and scratch in the area shown in Figure 1 of Airbus Helicopters Alert Service Bulletin (ASB) MBB–BK117 C– 2–65A–008 or ASB MBB–BK117–30A–120, each Revision 0 and dated January 31, 2018, as applicable to your model helicopter. (2) If there is a crack, before further flight, replace the TGB. (3) If there is a dent, a nick, or a scratch, before further flight, remove the surface material up to 0.2 mm using 80-grit abrasive paper and repeat the dye penetrant inspection. If there is a crack or if the damage cannot be removed, before further flight, replace the TGB. (4) If there is no crack and no dent, nick, or scratch, before further flight, finish the surface with 600-grit or finer abrasive paper. (f) Special Flight Permits Special flight permits are prohibited. (g) Alternative Methods of Compliance (AMOCs) (1) The Manager, Rotorcraft Standards Branch, FAA, may approve AMOCs for this AD. Send your proposal to: David Hatfield, Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817–222–5110; email 9ASW-FTW-AMOC-Requests@faa.gov. (2) For operations conducted under a 14 CFR part 119 operating certificate or under 14 CFR part 91, subpart K, the FAA suggests that you notify your principal inspector, or lacking a principal inspector, the manager of the local flight standards district office or certificate holding district office before operating any aircraft complying with this AD through an AMOC. (a) Applicability This airworthiness directive (AD) applies to Airbus Helicopters Deutschland GmbH Model MBB–BK117 A–1, MBB–BK117 A–3, MBB–BK117 A–4, MBB–BK117 B–1, MBB– BK117 B–2, MBB–BK117 C–1, and MBB– BK117 C–2 helicopters, certificated in any category. (h) Additional Information (b) Unsafe Condition This AD defines the unsafe condition as a crack in a tail gearbox (TGB) bellcrank attachment arm. This condition could result in disconnection of the bellcrank attachment arm from the TGB and subsequent loss of control of the helicopter. (i) Subject (c) Comments Due Date The FAA must receive comments by December 10, 2020. VerDate Sep<11>2014 17:11 Oct 23, 2020 Jkt 253001 The subject of this AD is addressed in European Aviation Safety Agency (now European Union Aviation Safety Agency) (EASA) AD No. 2018–0046, dated February 19, 2018. You may view the EASA AD on the internet at https://www.regulations.gov in the AD Docket. Joint Aircraft Service Component (JASC) Code: 6520, Tail Rotor Gearbox. Issued on October 19, 2020. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2020–23446 Filed 10–23–20; 8:45 am] BILLING CODE 4910–13–P PO 00000 Frm 00013 Fmt 4702 Sfmt 4702 Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2020–0969; Project Identifier MCAI–2020–00853–T] RIN 2120–AA64 Airworthiness Directives; Airbus SAS Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus SAS Model A350–941 and –1041 airplanes. This proposed AD was prompted by a report that certain retaining rings could cause damage to frame forks, brackets and edge frames, and their surface protection; subsequent investigation showed that the depth of the frame fork spotfacing on structural parts is inadequate to accommodate the retaining ring. This proposed AD would require repetitive inspections of certain areas of each cargo door for damage and corrective action. This proposed AD would also provide an optional terminating modification, as specified in a European Union Aviation Safety Agency (EASA) AD, which will be incorporated by reference. The FAA is proposing this AD to address the unsafe condition on these products. DATES: The FAA must receive comments on this proposed AD by December 10, 2020. 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 https://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 material that will be incorporated by reference (IBR) in this AD, contact the EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221 8999 000; email ADs@ easa.europa.eu; internet www.easa.europa.eu. You may find this IBR material on the EASA website at https://ad.easa.europa.eu. You may SUMMARY: E:\FR\FM\26OCP1.SGM 26OCP1

Agencies

[Federal Register Volume 85, Number 207 (Monday, October 26, 2020)]
[Proposed Rules]
[Pages 67694-67696]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-23446]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-0967; Product Identifier 2018-SW-013-AD]
RIN 2120-AA64


Airworthiness Directives; Airbus Helicopters Deutschland GmbH 
Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) 
for Airbus Helicopters Deutschland GmbH Model MBB-BK117 A-1, MBB-BK117 
A-3, MBB-BK117 A-4, MBB-BK117 B-1, MBB-BK117 B-2, MBB-BK117 C-1, and 
MBB-BK117 C-2 helicopters. This proposed AD would require inspecting 
the tail gearbox (TGB) bellcrank attachment arm (arm) for a crack. This 
proposed AD was prompted by a report of a cracked TGB arm. The actions 
of this proposed AD are intended to address an unsafe condition on 
these products.

DATES: The FAA must receive comments on this proposed AD by December 
10, 2020.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Docket: Go to https://www.regulations.gov. Follow the online instructions for sending your 
comments electronically.
     Fax: 202-493-2251.
     Mail: Send comments to the U.S. Department of 
Transportation, Docket Operations, M-30, West Building Ground Floor, 
Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590-0001.
     Hand Delivery: Deliver to the ``Mail'' address between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.

Examining the AD Docket

    You may examine the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2020-
0967; 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 proposed AD, the European Aviation Safety Agency (now European 
Union Aviation Safety Agency) (EASA) AD, any comments received, and 
other information. The street address for Docket Operations is listed 
above. Comments will be available in the AD docket shortly after 
receipt.
    For service information identified in this proposed rule, contact 
Airbus Helicopters, 2701 N Forum Drive, Grand Prairie, TX 75052; 
telephone 972-641-0000 or 800-232-0323; fax 972-641-3775; or at https://www.airbus.com/helicopters/services/technical-support.html. You may 
view the referenced service information at the FAA, Office of the 
Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N-321, 
Fort Worth, TX 76177.

FOR FURTHER INFORMATION CONTACT: David Hatfield, Aviation Safety 
Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 
10101 Hillwood Pkwy., Fort Worth, TX

[[Page 67695]]

76177; telephone 817-222-5110; email [email protected].

SUPPLEMENTARY INFORMATION:

Comments Invited

    The FAA invites you to send any written relevant data, views, or 
arguments about this proposal. Send your comments to an address listed 
under ADDRESSES. Include ``Docket No. FAA-2020-0967; Product Identifier 
2018-SW-013-AD'' at the beginning of your comments. The most helpful 
comments reference a specific portion of the proposal, explain the 
reason for any recommended change, and include supporting data. The FAA 
will consider all comments received by the closing date and may amend 
this proposal because of those comments.
    Except for Confidential Business Information (CBI) as described in 
the following paragraph, and other information as described in 14 CFR 
11.35, the FAA will post all comments received, without change, to 
https://www.regulations.gov, including any personal information you 
provide. The agency will also post a report summarizing each 
substantive verbal contact received about this proposal.

Confidential Business Information

    CBI is commercial or financial information that is both customarily 
and actually treated as private by its owner. Under the Freedom of 
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public 
disclosure. If your comments responsive to this NPRM contain commercial 
or financial information that is customarily treated as private, that 
you actually treat as private, and that is relevant or responsive to 
this NPRM, it is important that you clearly designate the submitted 
comments as CBI. Please mark each page of your submission containing 
CBI as ``PROPIN.'' The FAA will treat such marked submissions as 
confidential under the FOIA, and they will not be placed in the public 
docket of this NPRM. Submissions containing CBI should be sent to David 
Hatfield, Aviation Safety Engineer, Safety Management Section, 
Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 
76177; telephone 817-222-5110; email [email protected]. Any 
commentary that the FAA receives which is not specifically designated 
as CBI will be placed in the public docket for this rulemaking.

Discussion

    EASA, which is the Technical Agent for the Member States of the 
European Union, has issued EASA AD No. 2018-0046, dated February 19, 
2018, to correct an unsafe condition for Airbus Helicopters Deutschland 
GmbH (AHD) (formerly Eurocopter Deutschland GmbH, Eurocopter 
Hubschrauber GmbH, Messerschmitt-B[ouml]lkow-Blohm GmbH), Airbus 
Helicopters Inc. (formerly American Eurocopter LLC) Model MBB-BK117 A-
1, MBB-BK117 A-3, MBB-BK117 A-4, MBB-BK117 B-1, MBB-BK117 B-2, MBB-
BK117 C-1, and MBB-BK117 C-2 helicopters. The EASA AD advises that a 
crack was detected on a Model MBB-BK117 A-4 TGB arm and that this 
condition, if not corrected, could result in disconnection of the arm 
from the TGB and possible loss of control of the helicopter. To address 
this unsafe condition, the EASA AD requires an inspection of the TGB 
arm for a crack and for surface anomalies.

FAA's Determination

    These helicopters have been approved by EASA and are approved for 
operation in the United States. Pursuant to the FAA's bilateral 
agreement with the European Union, EASA has notified the FAA about the 
unsafe condition described in its AD. The FAA is proposing this AD 
after evaluating all known relevant information and determining that an 
unsafe condition is likely to exist or develop on other products of the 
same type design.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed Airbus Helicopters Alert Service Bulletin (ASB) 
MBB-BK117 C-2-65A-008 for Model MBB-BK117 C-2 helicopters and ASB MBB-
BK117-30A-120 for Model MBB-BK117 A-1, MBB-BK117 A-3, MBB-BK117 A-4, 
MBB-BK117 B-1, MBB-BK117 B-2, and MBB-BK117 C-1 helicopters, each 
Revision 0 and dated January 31, 2018. The service information contains 
procedures for inspecting the TGB arm for a crack and surface 
anomalies.
    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.

Proposed AD Requirements

    This proposed AD would require the following:
     Within 100 hours time-in-service, removing the surface 
coating from the TGB bellcrank attachment arm and using a 5X or higher 
power magnifying glass, dye-penetrant inspecting the TGB arm for a 
crack and for any dent, nick, and scratch.
     If there is a crack, before further flight, replacing the 
TGB.
     If there is a dent, nick, or scratch, before further 
flight, removing the surface material up to 0.2 mm using 80-grit 
abrasive paper and repeating the dye penetrant inspection. If there is 
a crack or if the damage cannot be removed, before further flight, 
replacing the TGB.
     If there is no crack and no dent, nick, or scratch, before 
further flight, finishing the surface with 600-grit or finer abrasive 
paper.

Differences Between This Proposed AD and the EASA AD

    The EASA AD requires operators to contact Airbus Helicopters if 
there is a crack or if there is damage that cannot be repaired by 
removing surface material. This proposed AD would require replacing the 
TGB instead.

Costs of Compliance

    The FAA estimates that this proposed AD would affect 177 
helicopters of U.S. Registry. Labor rates are estimated at $85 per 
work-hour. Based on these numbers, the FAA estimates that operators may 
incur the following costs in order to comply with this proposed AD.
    Removing the surface protection and inspecting the TGB arm for a 
crack would take about 2 work-hours and the cost of materials would be 
minimal, for an estimated cost of $170 per helicopter and $30,090 for 
the U.S. fleet.
    If required, reworking the TGB arm would take about 1 work-hour and 
the cost of materials would be minimal, for an estimated cost of $85 
per helicopter. Replacing a TGB with a cracked arm would take about 4.5 
work-hours and cost about $69,000 for required parts, for an estimated 
cost of $69,383 per helicopter.

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.
    The FAA is 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

[[Page 67696]]

develop on products identified in this rulemaking action.

Regulatory Findings

    The FAA 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, I certify this proposed regulation:
    1. Is not a ``significant regulatory action'' under Executive Order 
12866,
    2. Will not affect intrastate aviation in Alaska, and
    3. 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 adding the following new airworthiness 
directive:

Airbus Helicopters Deutschland GmbH: Docket No. FAA-2020-0967; 
Product Identifier 2018-SW-013-AD.

(a) Applicability

    This airworthiness directive (AD) applies to Airbus Helicopters 
Deutschland GmbH Model MBB-BK117 A-1, MBB-BK117 A-3, MBB-BK117 A-4, 
MBB-BK117 B-1, MBB-BK117 B-2, MBB-BK117 C-1, and MBB-BK117 C-2 
helicopters, certificated in any category.

(b) Unsafe Condition

    This AD defines the unsafe condition as a crack in a tail 
gearbox (TGB) bellcrank attachment arm. This condition could result 
in disconnection of the bellcrank attachment arm from the TGB and 
subsequent loss of control of the helicopter.

(c) Comments Due Date

    The FAA must receive comments by December 10, 2020.

(d) Compliance

    You are responsible for performing each action required by this 
AD within the specified compliance time unless it has already been 
accomplished prior to that time.

(e) Required Actions

    Within 100 hours time-in-service:
    (1) Remove the surface coating from the TGB bellcrank attachment 
arm and using a 5X or higher power magnifying glass, dye-penetrant 
inspect the TGB arm for a crack and for any dent, nick, and scratch 
in the area shown in Figure 1 of Airbus Helicopters Alert Service 
Bulletin (ASB) MBB-BK117 C-2-65A-008 or ASB MBB-BK117-30A-120, each 
Revision 0 and dated January 31, 2018, as applicable to your model 
helicopter.
    (2) If there is a crack, before further flight, replace the TGB.
    (3) If there is a dent, a nick, or a scratch, before further 
flight, remove the surface material up to 0.2 mm using 80-grit 
abrasive paper and repeat the dye penetrant inspection. If there is 
a crack or if the damage cannot be removed, before further flight, 
replace the TGB.
    (4) If there is no crack and no dent, nick, or scratch, before 
further flight, finish the surface with 600-grit or finer abrasive 
paper.

(f) Special Flight Permits

    Special flight permits are prohibited.

(g) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Rotorcraft Standards Branch, FAA, may approve 
AMOCs for this AD. Send your proposal to: David Hatfield, Aviation 
Safety Engineer, Safety Management Section, Rotorcraft Standards 
Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 
817-222-5110; email [email protected].
    (2) For operations conducted under a 14 CFR part 119 operating 
certificate or under 14 CFR part 91, subpart K, the FAA suggests 
that you notify your principal inspector, or lacking a principal 
inspector, the manager of the local flight standards district office 
or certificate holding district office before operating any aircraft 
complying with this AD through an AMOC.

(h) Additional Information

    The subject of this AD is addressed in European Aviation Safety 
Agency (now European Union Aviation Safety Agency) (EASA) AD No. 
2018-0046, dated February 19, 2018. You may view the EASA AD on the 
internet at https://www.regulations.gov in the AD Docket.

 (i) Subject

    Joint Aircraft Service Component (JASC) Code: 6520, Tail Rotor 
Gearbox.

    Issued on October 19, 2020.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2020-23446 Filed 10-23-20; 8:45 am]
BILLING CODE 4910-13-P