Airworthiness Directives; BAE Systems (Operations) Limited Airplanes, 14283-14285 [2021-05204]

Download as PDF Federal Register / Vol. 86, No. 48 / Monday, March 15, 2021 / Proposed Rules § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive: ■ (a) Comments Due Date The FAA must receive comments by April 29, 2021. (b) Affected Airworthiness Directives (ADs) None. (j) Alternative Methods of Compliance (AMOCs) (c) Applicability This AD applies to all Airbus Helicopters Model EC225LP helicopters, certificated in any category. (1) The Manager, Strategic Policy Rotorcraft Section, 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 Strategic Policy Rotorcraft Section, send it to: Hal Jensen, Aerospace Engineer, Operational Safety Branch, FAA, 470 L’Enfant Plaza SW, Washington, DC 20024; telephone 202–267– 9167; email 9-ASW-FTW-AMOC-Requests@ faa.gov. (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. (d) Subject Joint Aircraft System Component (JASC) Code 6397, Main Rotor Drive System Wiring. (e) Reason This AD was prompted by reports of oil leaks during engine starting, originating from the main gearbox (MGB). The FAA is issuing this AD to address the inadvertent opening of the P 2.4 valve of the MGB emergency lubrication (EMLUB) system, which results from MGB pressurization by compressed air produced by the engine during starting in response to a signal from the EMLUB electronic control card. This condition could result in loss of the MGB lubrication system and a reduced ability of the crew to manage adverse operating conditions. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Requirements Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with European Union Aviation Safety Agency AD No. 2016–0232R1, dated December 12, 2019 (EASA AD 2016–0232R1). (h) Exceptions to EASA AD 2016–0232R1 (1) Where EASA AD 2016–0232R1 refers December 6, 2016 (the effective date of European Aviation Safety Agency AD No. 2016–0232, dated November 22, 2016), this AD requires using the effective date of this AD. (2) Where EASA AD 2016–0232R1 refers to flight hours (FH), this AD requires using hours time-in-service (TIS). (3) Where paragraph (2) of EASA AD 2016– 0232R1 allows an additional interval margin of 225 FH, this AD does not. This AD requires accomplishing the functional tests within 600 hours TIS, and thereafter at intervals not to exceed 600 hours TIS. (4) Where the service information referenced in EASA AD 2016–0232R1 requires contacting Airbus Helicopters technical support, this AD requires that the corrective action be accomplished using a method approved by the Manager, Strategic Policy Rotorcraft Section, FAA. The Manager’s approval letter must specifically refer to this AD. VerDate Sep<11>2014 16:14 Mar 12, 2021 Jkt 253001 (k) Related Information (1) For EASA AD 2016–0232R1, 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 EASA AD on the EASA website at https:// ad.easa.europa.eu. You may view this material 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. This material may be found in the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA–2021–0016. (2) For more information about this AD, contact: Hal Jensen, Aerospace Engineer, Operational Safety Branch, FAA, 470 L’Enfant Plaza SW, Washington, DC 20024; telephone 202–267–9167; email hal.jensen@ faa.gov. Issued on January 27, 2021. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–05196 Filed 3–12–21; 8:45 am] BILLING CODE 4910–13–P PO 00000 Frm 00003 Fmt 4702 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration (i) Special Flight Permit Special flight permits may be issued in accordance with 14 CFR 21.197 and 21.199 to operate the helicopter to a location where the helicopter can be modified (if the operator elects to do so), provided the helicopter is operated under visual flight rules and without passengers only. Airbus Helicopters: Docket No. FAA–2021– 0016; Project Identifier 2019–SW–114– AD. khammond on DSKJM1Z7X2PROD with PROPOSALS (5) The ‘‘Remarks’’ section of EASA AD 2016–0232R1 does not apply to this AD. 14283 Sfmt 4702 14 CFR Part 39 [Docket No. FAA–2021–0138; Project Identifier MCAI–2020–01466–T] RIN 2120–AA64 Airworthiness Directives; BAE Systems (Operations) Limited 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 BAE Systems (Operations) Limited Model BAe 146 and Model Avro 146– RJ series airplanes. This proposed AD was prompted by a report indicating that during a routine battery capacity check on the emergency light power units, the printed circuit boards (PCBs) for certain power units were found to show signs of burning. This proposed AD would require replacing each Honeywell emergency light power unit having a certain part number with a serviceable emergency light power unit. The FAA is proposing this AD to address the unsafe condition on these products. SUMMARY: The FAA must receive comments on this proposed AD by April 29, 2021. 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. DATES: Examining the AD Docket You may examine the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA–2021–0138; 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 NPRM, any comments received, and other information. The street address for Docket Operations is listed above. E:\FR\FM\15MRP1.SGM 15MRP1 14284 Federal Register / Vol. 86, No. 48 / Monday, March 15, 2021 / Proposed Rules FOR FURTHER INFORMATION CONTACT: Todd Thompson, Aerospace Engineer, Large Aircraft Section, International Validation Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone and fax: 206–231–3228; email Todd.Thompson@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–2021–0138; Project Identifier MCAI–2020–01466–T’’ 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 the 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 NPRM. 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 Todd Thompson, Aerospace Engineer, Large Aircraft Section, International Validation Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone and fax: 206–231–3228; email Todd.Thompson@ 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. Background The EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 2020–0237, dated October 28, 2020 (EASA AD 2020–0237) (also referred to after this as the Mandatory Continuing Airworthiness Information, or the MCAI), to correct an unsafe condition for all BAE Systems (Operations) Limited Model BAe 146 and Model Avro 146–RJ series airplanes. You may examine the MCAI in the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA–2021–0138. This proposed AD was prompted by a report indicating that during a routine battery capacity check on the emergency light power units, the PCBs for power units LE 10 and LE 22 (Illustrated Parts Catalog (IPC) 33–50–00) were found to show signs of burning. The FAA is proposing this AD to address heat damage of the PCBs, which could lead to battery discharge and possibly result in lack of power supply to the emergency light units when needed. See the MCAI for additional background information. FAA’s Determination This product has been approved by the aviation authority of another country, and is approved for operation in the United States. Pursuant to the FAA’s bilateral agreement with the State of Design Authority, the FAA has been notified of the unsafe condition described in the MCAI and service information referenced above. The FAA is proposing this AD because the FAA evaluated all the relevant information and determined the unsafe condition described previously is likely to exist or develop on other products of the same type design. Proposed AD Requirements in This NPRM This proposed AD would require replacing each Honeywell emergency light power unit having a certain part number with a serviceable emergency light power unit. Costs of Compliance The FAA estimates that this proposed AD affects 30 airplanes of U.S. registry. The FAA estimates the following costs to comply with this proposed AD: ESTIMATED COSTS FOR REQUIRED ACTIONS Labor cost Parts cost Cost per product Cost on U.S. operators 2 work-hours × $85 per hour = $170 .......................................................................................... $1,800 $1,970 $59,100 khammond on DSKJM1Z7X2PROD with PROPOSALS 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 VerDate Sep<11>2014 16:14 Mar 12, 2021 Jkt 253001 regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. Regulatory Findings 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 PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 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) Would not affect intrastate aviation in Alaska, and (3) Would not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. E:\FR\FM\15MRP1.SGM 15MRP1 Federal Register / Vol. 86, No. 48 / Monday, March 15, 2021 / Proposed Rules 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: ■ BAE Systems (Operations) Limited: Docket No. FAA–2021–0138; Project Identifier MCAI–2020–01466–T. (a) Comments Due Date The FAA must receive comments on this airworthiness directive (AD) action by April 29, 2021. (b) Affected ADs None. (c) Applicability This AD applies to all BAE Systems (Operations) Limited airplanes specified in paragraphs (c)(1) and (2) of this AD, certificated in any category. (1) Model BAe 146–100A, –200A, and –300A airplanes. (2) Model Avro 146–RJ70A, 146–RJ85A, and 146–RJ100A airplanes. (d) Subject Air Transport Association (ATA) of America Code 33, Lights. khammond on DSKJM1Z7X2PROD with PROPOSALS (e) Unsafe Condition This AD was prompted by a report indicating that during a routine battery capacity check on the emergency light power units, the printed circuit boards (PCBs) for power units LE 10 and LE 22 (Illustrated Parts Catalog (IPC) 33–50–00) were found to show signs of burning. The FAA is issuing this AD to address heat damage of the PCBs, which could lead to battery discharge and possibly result in lack of power supply to the emergency light units when needed. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Definitions (1) An affected part is defined as a Honeywell emergency light power unit, having part number 60–3550–1, except for those modified and marked using the instructions specified in Honeywell Service Bulletin 60–3550–33–0001, Revision 1, dated September 3, 2013. VerDate Sep<11>2014 16:14 Mar 12, 2021 Jkt 253001 (2) A serviceable part is defined as an emergency light power unit that is not an affected part. (3) Group 1 airplanes are those that have an affected part installed. (4) Group 2 airplanes are those that do not have an affected part installed. (h) Replacement Within two months after the effective date of this AD: Replace each affected part with a serviceable part. Note 1 to paragraph (h): BAE Systems (Operations) Limited Service Bulletin ISB.33–081, dated November 4, 2019, contains information related to the replacement specified in paragraph (h) of this AD. (i) Parts Installation Prohibition At the applicable compliance times specified in paragraphs (i)(1) or (2) of this AD, do not install an affected part on any airplane. (1) For Group 1 airplanes: After replacement of each affected part on an airplane as specified in paragraph (h) of this AD. (2) For Group 2 airplanes: As of the effective date of this AD. (j) Other FAA AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, Large Aircraft Section, International Validation 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 responsible Flight Standards Office, as appropriate. If sending information directly to the Large Aircraft Section, International Validation Branch, send it to the attention of the person identified in paragraph (k)(2) of this AD. Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. (2) Contacting the Manufacturer: For any requirement in this AD to obtain instructions from a manufacturer, the instructions must be accomplished using a method approved by the Manager, Large Aircraft Section, International Validation Branch, FAA; or the European Union Aviation Safety Agency (EASA); or BAE Systems (Operations) Limited’s EASA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOAauthorized signature. (k) Related Information (1) Refer to Mandatory Continuing Airworthiness Information (MCAI) EASA AD 2020–0237, dated October 28, 2020, for related information. This MCAI may be found in the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA–2021–0138. (2) For more information about this AD, contact Todd Thompson, Aerospace PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 14285 Engineer, Large Aircraft Section, International Validation Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone and fax: 206–231–3228; email Todd.Thompson@faa.gov. Issued on March 3, 2021. Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–05204 Filed 3–12–21; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2006–26107; Project Identifier 2004–SW–30–AD] RIN 2120–AA64 Airworthiness Directives; Carson Helicopters, Inc.; Croman Corporation; Sikorsky Aircraft Corporation; and Siller Helicopters Federal Aviation Administration (FAA), DOT. ACTION: Supplemental notice of proposed rulemaking (SNPRM); reopening of comment period. AGENCY: The FAA is revising an earlier proposal for all Sikorsky Aircraft Corporation Model S–61 A, D, E, and V helicopters; Croman Corporation Model SH–3H helicopters, Carson Helicopters, Inc. Model S–61L helicopters; and Siller Helicopters Model CH–3E and SH–3A helicopters. This action revises the notice of proposed rulemaking (NPRM) by adding camshaft and gear housing part numbers that need to be marked and clarifying the applicability and certain compliance times. The FAA is proposing this airworthiness directive (AD) to address the unsafe condition on these products. Since these actions would impose an additional burden over that in the NPRM, the FAA is reopening the comment period to allow the public the chance to comment on these changes. DATES: The comment period for the NPRM published in the Federal Register on October 30, 2006 (71 FR 63272), is reopened. The FAA must receive comments on this SNPRM by April 29, 2021. 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. SUMMARY: E:\FR\FM\15MRP1.SGM 15MRP1

Agencies

[Federal Register Volume 86, Number 48 (Monday, March 15, 2021)]
[Proposed Rules]
[Pages 14283-14285]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-05204]


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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-0138; Project Identifier MCAI-2020-01466-T]
RIN 2120-AA64


Airworthiness Directives; BAE Systems (Operations) Limited 
Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) 
for all BAE Systems (Operations) Limited Model BAe 146 and Model Avro 
146-RJ series airplanes. This proposed AD was prompted by a report 
indicating that during a routine battery capacity check on the 
emergency light power units, the printed circuit boards (PCBs) for 
certain power units were found to show signs of burning. This proposed 
AD would require replacing each Honeywell emergency light power unit 
having a certain part number with a serviceable emergency light power 
unit. 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 April 29, 
2021.

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.

Examining the AD Docket

    You may examine the AD docket at https://www.regulations.gov by 
searching for and locating Docket No. FAA-2021-0138; 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 NPRM, any comments 
received, and other information. The street address for Docket 
Operations is listed above.

[[Page 14284]]


FOR FURTHER INFORMATION CONTACT: Todd Thompson, Aerospace Engineer, 
Large Aircraft Section, International Validation Branch, FAA, 2200 
South 216th St., Des Moines, WA 98198; telephone and fax: 206-231-3228; 
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-2021-0138; Project Identifier 
MCAI-2020-01466-T'' 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 
the 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 NPRM.

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 Todd 
Thompson, Aerospace Engineer, Large Aircraft Section, International 
Validation Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; 
telephone and fax: 206-231-3228; 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.

Background

    The EASA, which is the Technical Agent for the Member States of the 
European Union, has issued EASA AD 2020-0237, dated October 28, 2020 
(EASA AD 2020-0237) (also referred to after this as the Mandatory 
Continuing Airworthiness Information, or the MCAI), to correct an 
unsafe condition for all BAE Systems (Operations) Limited Model BAe 146 
and Model Avro 146-RJ series airplanes. You may examine the MCAI in the 
AD docket at https://www.regulations.gov by searching for and locating 
Docket No. FAA-2021-0138.
    This proposed AD was prompted by a report indicating that during a 
routine battery capacity check on the emergency light power units, the 
PCBs for power units LE 10 and LE 22 (Illustrated Parts Catalog (IPC) 
33-50-00) were found to show signs of burning. The FAA is proposing 
this AD to address heat damage of the PCBs, which could lead to battery 
discharge and possibly result in lack of power supply to the emergency 
light units when needed. See the MCAI for additional background 
information.

FAA's Determination

    This product has been approved by the aviation authority of another 
country, and is approved for operation in the United States. Pursuant 
to the FAA's bilateral agreement with the State of Design Authority, 
the FAA has been notified of the unsafe condition described in the MCAI 
and service information referenced above. The FAA is proposing this AD 
because the FAA evaluated all the relevant information and determined 
the unsafe condition described previously is likely to exist or develop 
on other products of the same type design.

Proposed AD Requirements in This NPRM

    This proposed AD would require replacing each Honeywell emergency 
light power unit having a certain part number with a serviceable 
emergency light power unit.

Costs of Compliance

    The FAA estimates that this proposed AD affects 30 airplanes of 
U.S. registry. The FAA estimates the following costs to comply with 
this proposed AD:

                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per       Cost on U.S.
                          Labor cost                              Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
2 work-hours x $85 per hour = $170...........................          $1,800           $1,970          $59,100
----------------------------------------------------------------------------------------------------------------

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 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 above, I certify this proposed 
regulation:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Would not affect intrastate aviation in Alaska, and
    (3) Would not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.

[[Page 14285]]

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:

BAE Systems (Operations) Limited: Docket No. FAA-2021-0138; Project 
Identifier MCAI-2020-01466-T.

(a) Comments Due Date

    The FAA must receive comments on this airworthiness directive 
(AD) action by April 29, 2021.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to all BAE Systems (Operations) Limited 
airplanes specified in paragraphs (c)(1) and (2) of this AD, 
certificated in any category.
    (1) Model BAe 146-100A, -200A, and -300A airplanes.
    (2) Model Avro 146-RJ70A, 146-RJ85A, and 146-RJ100A airplanes.

(d) Subject

    Air Transport Association (ATA) of America Code 33, Lights.

(e) Unsafe Condition

    This AD was prompted by a report indicating that during a 
routine battery capacity check on the emergency light power units, 
the printed circuit boards (PCBs) for power units LE 10 and LE 22 
(Illustrated Parts Catalog (IPC) 33-50-00) were found to show signs 
of burning. The FAA is issuing this AD to address heat damage of the 
PCBs, which could lead to battery discharge and possibly result in 
lack of power supply to the emergency light units when needed.

(f) Compliance

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

(g) Definitions

    (1) An affected part is defined as a Honeywell emergency light 
power unit, having part number 60-3550-1, except for those modified 
and marked using the instructions specified in Honeywell Service 
Bulletin 60-3550-33-0001, Revision 1, dated September 3, 2013.
    (2) A serviceable part is defined as an emergency light power 
unit that is not an affected part.
    (3) Group 1 airplanes are those that have an affected part 
installed.
    (4) Group 2 airplanes are those that do not have an affected 
part installed.

(h) Replacement

    Within two months after the effective date of this AD: Replace 
each affected part with a serviceable part.

    Note 1 to paragraph (h):  BAE Systems (Operations) Limited 
Service Bulletin ISB.33-081, dated November 4, 2019, contains 
information related to the replacement specified in paragraph (h) of 
this AD.

(i) Parts Installation Prohibition

    At the applicable compliance times specified in paragraphs 
(i)(1) or (2) of this AD, do not install an affected part on any 
airplane.
    (1) For Group 1 airplanes: After replacement of each affected 
part on an airplane as specified in paragraph (h) of this AD.
    (2) For Group 2 airplanes: As of the effective date of this AD.

(j) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, 
Large Aircraft Section, International Validation 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 responsible Flight 
Standards Office, as appropriate. If sending information directly to 
the Large Aircraft Section, International Validation Branch, send it 
to the attention of the person identified in paragraph (k)(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 
responsible Flight Standards Office.
    (2) Contacting the Manufacturer: For any requirement in this AD 
to obtain instructions from a manufacturer, the instructions must be 
accomplished using a method approved by the Manager, Large Aircraft 
Section, International Validation Branch, FAA; or the European Union 
Aviation Safety Agency (EASA); or BAE Systems (Operations) Limited's 
EASA Design Organization Approval (DOA). If approved by the DOA, the 
approval must include the DOA-authorized signature.

(k) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) EASA AD 2020-0237, dated October 28, 2020, for related 
information. This MCAI may be found in the AD docket on the internet 
at https://www.regulations.gov by searching for and locating Docket 
No. FAA-2021-0138.
    (2) For more information about this AD, contact Todd Thompson, 
Aerospace Engineer, Large Aircraft Section, International Validation 
Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone 
and fax: 206-231-3228; email [email protected].

    Issued on March 3, 2021.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives, Compliance & Airworthiness 
Division, Aircraft Certification Service.
[FR Doc. 2021-05204 Filed 3-12-21; 8:45 am]
BILLING CODE 4910-13-P