Airworthiness Directives; Pacific Aerospace Limited Airplanes, 48086-48088 [2021-18444]

Download as PDF 48086 Federal Register / Vol. 86, No. 164 / Friday, August 27, 2021 / Proposed Rules following the Accomplishment Instructions, Part A or Part AA, in ASI Aviation Service Bulletin No. F406–104, Revision 1, dated December 14, 2018. (2) Within 100 hours TIS after the effective date of this AD, and thereafter at intervals not to exceed 2,400 hours TIS, do a magnetic particle inspection for cracks of the LH and RH rudder control pedal torque tubes by following the Accomplishment Instructions, Part B, in ASI Aviation Service Bulletin No. F406–104, Revision 1, dated December 14, 2018. (3) If, during any inspection required by paragraph (h)(1) or (2) of this AD, any crack is detected on a rudder control pedal torque tube, you are not required to contact ASI Aviation as specified in steps A.16, AA.5, and B.4 of ASI Aviation Service Bulletin No. F406–104, Revision 1, dated December 14, 2018. Instead, before further flight, replace the rudder control pedal torque tube with a serviceable part as defined by this AD. (i) Installation Limitation As of the effective date of this AD, do not install a rudder control pedal torque tube P/ N 5115260–1 (LH) or P/N 5115260–2 (RH) on any airplane unless it is a serviceable part as defined by this AD. lotter on DSK11XQN23PROD with PROPOSALS1 (j) Alternative Methods of Compliance (AMOCs) (1) The Manager, 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 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 Related Information or email: 9AVS-AIR-730-AMOC@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. (k) Related Information (1) For more information about this AD, contact Gregory Johnson, Aviation Safety Engineer, FAA, General Aviation & Rotorcraft Section, International Validation Branch, 901 Locust, Room 301, Kansas City, MO 64106; phone: (720) 626–5462; fax: (816) 329–4090; email: gregory.johnson@faa.gov. (2) Refer to European Aviation Safety Agency (EASA) AD 2019–0016, dated January 29, 2019, for more information. You may examine the EASA AD in the AD docket at https://www.regulations.gov by searching for and locating it in Docket No. FAA–2021– 0712. (3) For service information identified in this AD, contact ASI Aviation, Ae´rodrome de Reims Prunay, 51360 Prunay, France; telephone: +33 3 26 48 46 84; fax: +33 3 26 49 18 57; email: contact@asi-aviation.fr; website: https://asi-aviation.fr/pageAccueil.html. You may view this service information at the Airworthiness Products Section, Operational Safety Branch, FAA, 901 Locust, Kansas City, MO 64106. For VerDate Sep<11>2014 16:25 Aug 26, 2021 Jkt 253001 information on the availability of this material at the FAA, call (816) 329–4148. Issued on August 20, 2021. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–18384 Filed 8–26–21; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2021–0711; Project Identifier 2019–CE–024–AD] RIN 2120–AA64 Airworthiness Directives; Pacific Aerospace 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 certain Pacific Aerospace Limited Model 750XL airplanes. This proposed AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as chafing of the engine fuel feed line hoses. This proposed AD would require inspecting the engine fuel feed line hoses and the electrical wiring and rerouting all fuel lines. 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 October 12, 2021. DATES: 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 service information identified in this NPRM, contact the Civil Aviation ADDRESSES: PO 00000 Frm 00041 Fmt 4702 Sfmt 4702 Authority of New Zealand, Level 15, Asteron Centre, 55 Featherston Street, Wellington 6011; phone: + 64 4 560 9400; fax: + 64 4 569 2024; email: info@ caa.govt.nz. You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 901 Locust, Kansas City, MO 64106. For information on the availability of this material at the FAA, call (816) 329–4148. Examining the AD Docket You may examine the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA–2021–0711; 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, the MCAI, any comments received, and other information. The street address for Docket Operations is listed above. FOR FURTHER INFORMATION CONTACT: Mike Kiesov, Aviation Safety Engineer, General Aviation & Rotorcraft Section, International Validation Branch, FAA, 901 Locust, Room 301, Kansas City, MO 64106; phone: (816) 329–4144; fax: (816) 329–4090; email: mike.kiesov@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–2021–0711; Project Identifier 2019–CE–024–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 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 E:\FR\FM\27AUP1.SGM 27AUP1 Federal Register / Vol. 86, No. 164 / Friday, August 27, 2021 / Proposed Rules 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 Mike Kiesov, Aviation Safety Engineer, General Aviation & Rotorcraft Section, International Validation Branch, FAA, 901 Locust, Room 301, Kansas City, MO 64106. 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 Civil Aviation Authority (CAA), which is the aviation authority for New Zealand, has issued AD No. DCA/ 750XL/37, effective April 25, 2019 (referred to after this as ‘‘the MCAI’’), to correct an unsafe condition for certain Pacific Aerospace Limited Model 750XL airplanes. The MCAI states: 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 this State of Design Authority, it has notified the FAA of the unsafe condition described in the MCAI and service information referenced above. The FAA is issuing this NPRM after determining 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 accomplishing the actions specified in the service information described previously, except as discussed under ‘‘Differences Between this Proposed AD and the MCAI.’’ You may examine the MCAI in the AD docket at https:// www.regulations.gov by searching for and locating Docket No. FAA–2021– 0711. Differences Between This Proposed AD and the MCAI The MCAI requires an inspection at the next 150 hour maintenance inspection or within the next 50 hours time-in-service (TIS), whichever occurs later, while this proposed AD would require those actions within 50 hours TIS or at the next annual inspection after the effective date of this AD, whichever occurs later. If there is no chafing and damage found during the inspection, the MCAI requires certain follow-on actions at the next 300 hour maintenance inspection or within the next 50 hours TIS, whichever is later. This proposed AD would require those actions within 50 hours TIS or at the next annual inspection, whichever occurs later, because there is no regulatory requirement for operators in the U.S. to have 150-hour or 300-hour maintenance inspections. Related Service Information Under 1 CFR Part 51 The FAA reviewed Pacific Aerospace Mandatory Service Bulletin PACSB/XL/ 113, Issue 2, dated March 8, 2019. The service information contains procedures for inspecting the engine fuel feed line hoses and the electrical wiring for chafing or damage, rerouting all fuel lines and the fuel transducer and pressure switch wiring (including installing P clips), and inspecting the fuel hose for chafing and replacing chafed fire sleeves or fuel hoses if necessary. This service information is reasonably available because the Costs of Compliance The FAA estimates that this AD, if adopted as proposed, would affect 23 airplanes of U.S. registry. The FAA also estimates that it would take about 5 work-hours per airplane and require parts costing $20 per airplane to comply with the inspection and re-routing that would be required by this proposed AD. The average labor rate is $85 per workhour. Based on these figures, the FAA estimates the inspection and re-routing cost of this proposed AD on U.S. operators to be $10,235, or $445 per airplane. DCA/750XL/37 is prompted by a review of the installation of the engine fuel lines and the electrical installation forward of the engine firewall on aircraft fitted with an air conditioner and/or a standby alternator, including those aircraft configured for the installation of an air conditioner and/or a standby alternator. It was found that the engine fuel feed lines hoses could possibly chafe against the adjacent electrical wiring and the ignition exciter, which could result in a fuel leak and possible fire. The [CAA] AD is issued to introduce the corrective actions in Pacific Aerospace Mandatory Service Bulletin (MSB) PACSB/XL/113 issue 2, dated 8 March 2019. lotter on DSK11XQN23PROD with PROPOSALS1 interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section. VerDate Sep<11>2014 16:25 Aug 26, 2021 Jkt 253001 PO 00000 Frm 00042 Fmt 4702 Sfmt 4702 48087 The FAA has included all known costs in its cost estimate. According to the manufacturer, however, some of the costs of this proposed AD may be covered under warranty, thereby reducing the cost impact on affected operators. 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. 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: E:\FR\FM\27AUP1.SGM 27AUP1 48088 Federal Register / Vol. 86, No. 164 / Friday, August 27, 2021 / Proposed Rules 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: ■ Pacific Aerospace Limited: Docket No. FAA– 2021–0711; Project Identifier 2019–CE– 024–AD. (a) Comments Due Date The FAA must receive comments on this airworthiness directive (AD) by October 12, 2021. (b) Affected ADs None. (c) Applicability This AD applies to Pacific Aerospace Limited Model 750XL airplanes, serial numbers 101 through 215 inclusive, 220, 8001, and 8002, certificated in any category, that are fitted with an air conditioner and/or a standby alternator, including airplanes configured for the installation of an air conditioner and/or a standby alternator, as shown in Figure 1 of Part A in Pacific Aerospace Mandatory Service Bulletin PACSB/XL/113, Issue 2, dated March 8, 2019 (MSB PACSB/XL/113, Issue 2). (d) Subject Joint Aircraft System Component (JASC) Code 2820, Aircraft Fuel Distribution, and 2497, Electrical Power System Wiring. (e) Unsafe Condition This AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and address an unsafe condition on an aviation product. The MCAI describes the unsafe condition as chafing of the engine fuel feed line hoses. The FAA is issuing this AD to prevent chafing of the engine fuel feed line hoses with electrical wiring and the ignition exciter located forward of the engine firewall. The unsafe condition, if not addressed, could result in a fuel leak and fire. lotter on DSK11XQN23PROD with PROPOSALS1 (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions Within 50 hours time-in-service (TIS) or at the next annual inspection after the effective date of this AD, whichever occurs later, inspect the engine fuel feed line hoses and the electrical wiring for chafing and damage in accordance with the Accomplishment Instructions, Part A steps 3) and 4), in MSB PACSB/XL/113, Issue 2. (1) If there is any chafing or damage that penetrates the orange outer covering of the fuel line fire sleeve or if there is any chafed or damaged electrical wiring, before further VerDate Sep<11>2014 16:25 Aug 26, 2021 Jkt 253001 flight, inspect the fuel hose for chafing, replace any chafed fire sleeve or fuel hose, and reroute all fuel lines in accordance with the Accomplishment Instructions, Part B, in MSB PACSB/XL/113, Issue 2. (2) If there are no chafed or damaged engine fuel feed line hoses and no chafed or damaged electrical wiring, within 50 hours TIS or at the next annual inspection, whichever occurs later, reroute all fuel lines in accordance with the Accomplishment Instructions, Part B, in MSB PACSB/XL/113, Issue 2. (h) Alternative Methods of Compliance (AMOCs) (1) The Manager, 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 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 Related Information or email: 9AVS-AIR-730-AMOC@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. (i) Related Information (1) For more information about this AD, contact Mike Kiesov, Aviation Safety Engineer, General Aviation & Rotorcraft Section, International Validation Branch, FAA, 901 Locust, Room 301, Kansas City, MO 64106; phone: (816) 329–4144; fax: (816) 329–4090; email: mike.kiesov@faa.gov. (2) Refer to Civil Aviation Authority (CAA) of New Zealand AD DCA/750XL/37, effective April 25, 2019, for more information. You may examine the CAA AD in the AD docket at https://www.regulations.gov by searching for and locating it in Docket No. FAA–2021– 0711. (3) For service information identified in this AD, contact the CAA of New Zealand, Level 15, Asteron Centre, 55 Featherston Street, Wellington 6011; phone: + 64 4 560 9400; fax: + 64 4 569 2024; email: info@ caa.govt.nz. You may view this service information at the Airworthiness Products Section, Operational Safety Branch, FAA, 901 Locust, Kansas City, MO 64106. For information on the availability of this material at the FAA, call (816) 329–4148. Issued on August 23, 2021. Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–18444 Filed 8–26–21; 8:45 am] BILLING CODE 4910–13–P PO 00000 Frm 00043 Fmt 4702 Sfmt 4702 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 71 [Docket No. FAA–2021–0674; Airspace Docket No. 21–ASW–14] RIN 2120–AA66 Proposed Amendment Class D and Class E Airspace; Ardmore, OK Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: This action proposes to amend the Class D and Class E airspace at Ardmore, OK. The FAA is proposing this action as the result of airspace reviews due to the decommissioning of the Arbuckle non-directional beacon (NDB). The geographic coordinates of the airport would also be updated to coincide with the FAA’s aeronautical database. DATES: Comments must be received on or before October 12, 2021. ADDRESSES: Send comments on this proposal to the U.S. Department of Transportation, Docket Operations, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590; telephone (202) 366–9826, or (800) 647–5527. You must identify FAA Docket No. FAA–2021– 0674/Airspace Docket No. 21–ASW–14, at the beginning of your comments. You may also submit comments through the internet at https://www.regulations.gov. You may review the public docket containing the proposal, any comments received, and any final disposition in person in the Dockets Office between 9:00 a.m. and 5:00 p.m., Monday through Friday, except federal holidays. FAA Order 7400.11E, Airspace Designations and Reporting Points, and subsequent amendments can be viewed online at https://www.faa.gov/air_ traffic/publications/. For further information, you can contact the Airspace Policy Group, Federal Aviation Administration, 800 Independence Avenue SW, Washington, DC 20591; telephone: (202) 267–8783. The Order is also available for inspection at the National Archives and Records Administration (NARA). For information on the availability of FAA Order 7400.11E at NARA, email: fr.inspection@nara.gov or go to https:// www.archives.gov/federal-register/cfr/ ibr-locations.html. FOR FURTHER INFORMATION CONTACT: Jeffrey Claypool, Federal Aviation Administration, Operations Support SUMMARY: E:\FR\FM\27AUP1.SGM 27AUP1

Agencies

[Federal Register Volume 86, Number 164 (Friday, August 27, 2021)]
[Proposed Rules]
[Pages 48086-48088]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-18444]


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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-0711; Project Identifier 2019-CE-024-AD]
RIN 2120-AA64


Airworthiness Directives; Pacific Aerospace 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 certain Pacific Aerospace Limited Model 750XL airplanes. This 
proposed AD was prompted by mandatory continuing airworthiness 
information (MCAI) originated by an aviation authority of another 
country to identify and correct an unsafe condition on an aviation 
product. The MCAI describes the unsafe condition as chafing of the 
engine fuel feed line hoses. This proposed AD would require inspecting 
the engine fuel feed line hoses and the electrical wiring and rerouting 
all fuel lines. 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 October 12, 
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.
    For service information identified in this NPRM, contact the Civil 
Aviation Authority of New Zealand, Level 15, Asteron Centre, 55 
Featherston Street, Wellington 6011; phone: + 64 4 560 9400; fax: + 64 
4 569 2024; email: [email protected]. You may view this service 
information at the FAA, Airworthiness Products Section, Operational 
Safety Branch, 901 Locust, Kansas City, MO 64106. For information on 
the availability of this material at the FAA, call (816) 329-4148.

Examining the AD Docket

    You may examine the AD docket at https://www.regulations.gov by 
searching for and locating Docket No. FAA-2021-0711; 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, the MCAI, 
any comments received, and other information. The street address for 
Docket Operations is listed above.

FOR FURTHER INFORMATION CONTACT: Mike Kiesov, Aviation Safety Engineer, 
General Aviation & Rotorcraft Section, International Validation Branch, 
FAA, 901 Locust, Room 301, Kansas City, MO 64106; phone: (816) 329-
4144; fax: (816) 329-4090; 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-2021-0711; Project Identifier 
2019-CE-024-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 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

[[Page 48087]]

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 Mike Kiesov, Aviation Safety Engineer, General Aviation & 
Rotorcraft Section, International Validation Branch, FAA, 901 Locust, 
Room 301, Kansas City, MO 64106. 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 Civil Aviation Authority (CAA), which is the aviation authority 
for New Zealand, has issued AD No. DCA/750XL/37, effective April 25, 
2019 (referred to after this as ``the MCAI''), to correct an unsafe 
condition for certain Pacific Aerospace Limited Model 750XL airplanes. 
The MCAI states:

    DCA/750XL/37 is prompted by a review of the installation of the 
engine fuel lines and the electrical installation forward of the 
engine firewall on aircraft fitted with an air conditioner and/or a 
standby alternator, including those aircraft configured for the 
installation of an air conditioner and/or a standby alternator. It 
was found that the engine fuel feed lines hoses could possibly chafe 
against the adjacent electrical wiring and the ignition exciter, 
which could result in a fuel leak and possible fire. The [CAA] AD is 
issued to introduce the corrective actions in Pacific Aerospace 
Mandatory Service Bulletin (MSB) PACSB/XL/113 issue 2, dated 8 March 
2019.

    You may examine the MCAI in the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA-2021-
0711.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed Pacific Aerospace Mandatory Service Bulletin 
PACSB/XL/113, Issue 2, dated March 8, 2019. The service information 
contains procedures for inspecting the engine fuel feed line hoses and 
the electrical wiring for chafing or damage, rerouting all fuel lines 
and the fuel transducer and pressure switch wiring (including 
installing P clips), and inspecting the fuel hose for chafing and 
replacing chafed fire sleeves or fuel hoses if necessary. 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

    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 this State of Design Authority, it 
has notified the FAA of the unsafe condition described in the MCAI and 
service information referenced above. The FAA is issuing this NPRM 
after determining 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 accomplishing the actions specified 
in the service information described previously, except as discussed 
under ``Differences Between this Proposed AD and the MCAI.''

Differences Between This Proposed AD and the MCAI

    The MCAI requires an inspection at the next 150 hour maintenance 
inspection or within the next 50 hours time-in-service (TIS), whichever 
occurs later, while this proposed AD would require those actions within 
50 hours TIS or at the next annual inspection after the effective date 
of this AD, whichever occurs later. If there is no chafing and damage 
found during the inspection, the MCAI requires certain follow-on 
actions at the next 300 hour maintenance inspection or within the next 
50 hours TIS, whichever is later. This proposed AD would require those 
actions within 50 hours TIS or at the next annual inspection, whichever 
occurs later, because there is no regulatory requirement for operators 
in the U.S. to have 150-hour or 300-hour maintenance inspections.

Costs of Compliance

    The FAA estimates that this AD, if adopted as proposed, would 
affect 23 airplanes of U.S. registry. The FAA also estimates that it 
would take about 5 work-hours per airplane and require parts costing 
$20 per airplane to comply with the inspection and re-routing that 
would be required by this proposed AD. The average labor rate is $85 
per work-hour.
    Based on these figures, the FAA estimates the inspection and re-
routing cost of this proposed AD on U.S. operators to be $10,235, or 
$445 per airplane.
    The FAA has included all known costs in its cost estimate. 
According to the manufacturer, however, some of the costs of this 
proposed AD may be covered under warranty, thereby reducing the cost 
impact on affected operators.

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.

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:

[[Page 48088]]

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:

Pacific Aerospace Limited: Docket No. FAA-2021-0711; Project 
Identifier 2019-CE-024-AD.

(a) Comments Due Date

    The FAA must receive comments on this airworthiness directive 
(AD) by October 12, 2021.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Pacific Aerospace Limited Model 750XL 
airplanes, serial numbers 101 through 215 inclusive, 220, 8001, and 
8002, certificated in any category, that are fitted with an air 
conditioner and/or a standby alternator, including airplanes 
configured for the installation of an air conditioner and/or a 
standby alternator, as shown in Figure 1 of Part A in Pacific 
Aerospace Mandatory Service Bulletin PACSB/XL/113, Issue 2, dated 
March 8, 2019 (MSB PACSB/XL/113, Issue 2).

(d) Subject

    Joint Aircraft System Component (JASC) Code 2820, Aircraft Fuel 
Distribution, and 2497, Electrical Power System Wiring.

(e) Unsafe Condition

    This AD was prompted by mandatory continuing airworthiness 
information (MCAI) originated by an aviation authority of another 
country to identify and address an unsafe condition on an aviation 
product. The MCAI describes the unsafe condition as chafing of the 
engine fuel feed line hoses. The FAA is issuing this AD to prevent 
chafing of the engine fuel feed line hoses with electrical wiring 
and the ignition exciter located forward of the engine firewall. The 
unsafe condition, if not addressed, could result in a fuel leak and 
fire.

(f) Compliance

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

(g) Required Actions

    Within 50 hours time-in-service (TIS) or at the next annual 
inspection after the effective date of this AD, whichever occurs 
later, inspect the engine fuel feed line hoses and the electrical 
wiring for chafing and damage in accordance with the Accomplishment 
Instructions, Part A steps 3) and 4), in MSB PACSB/XL/113, Issue 2.
    (1) If there is any chafing or damage that penetrates the orange 
outer covering of the fuel line fire sleeve or if there is any 
chafed or damaged electrical wiring, before further flight, inspect 
the fuel hose for chafing, replace any chafed fire sleeve or fuel 
hose, and reroute all fuel lines in accordance with the 
Accomplishment Instructions, Part B, in MSB PACSB/XL/113, Issue 2.
    (2) If there are no chafed or damaged engine fuel feed line 
hoses and no chafed or damaged electrical wiring, within 50 hours 
TIS or at the next annual inspection, whichever occurs later, 
reroute all fuel lines in accordance with the Accomplishment 
Instructions, Part B, in MSB PACSB/XL/113, Issue 2.

(h) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, 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 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 Related Information or email: 
[email protected].
    (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.

(i) Related Information

    (1) For more information about this AD, contact Mike Kiesov, 
Aviation Safety Engineer, General Aviation & Rotorcraft Section, 
International Validation Branch, FAA, 901 Locust, Room 301, Kansas 
City, MO 64106; phone: (816) 329-4144; fax: (816) 329-4090; email: 
[email protected].
    (2) Refer to Civil Aviation Authority (CAA) of New Zealand AD 
DCA/750XL/37, effective April 25, 2019, for more information. You 
may examine the CAA AD in the AD docket at https://www.regulations.gov by searching for and locating it in Docket No. 
FAA-2021-0711.
    (3) For service information identified in this AD, contact the 
CAA of New Zealand, Level 15, Asteron Centre, 55 Featherston Street, 
Wellington 6011; phone: + 64 4 560 9400; fax: + 64 4 569 2024; 
email: [email protected]. You may view this service information at 
the Airworthiness Products Section, Operational Safety Branch, FAA, 
901 Locust, Kansas City, MO 64106. For information on the 
availability of this material at the FAA, call (816) 329-4148.

    Issued on August 23, 2021.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives, Compliance & Airworthiness 
Division, Aircraft Certification Service.
[FR Doc. 2021-18444 Filed 8-26-21; 8:45 am]
BILLING CODE 4910-13-P


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