Airworthiness Directives; De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes, 30595-30597 [2020-10741]

Download as PDF Federal Register / Vol. 85, No. 98 / Wednesday, May 20, 2020 / Rules and Regulations Validation Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; phone and fax: 206–231–3226; email: tom.rodriguez@ faa.gov. (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless this AD specifies otherwise. (3) The following service information was approved for IBR on June 4, 2020. (i) European Union Aviation Safety Agency (EASA) AD 2020–0024, dated February 13, 2020. (ii) [Reserved] (4) The following service information was approved for IBR on August 1, 2019 (84 FR 30588, June 27, 2019). (i) Fokker Engineering Report SE–623, Fokker 70/100 Airworthiness Limitations Section, Part 2—(Structure ALIs and Safe Life Items), Issue 18, dated June 14, 2018. (ii) [Reserved] (5) For information about Fokker Services B.V. material, contact Fokker Services B.V., Technical Services Dept., P.O. Box 1357, 2130 EL Hoofddorp, the Netherlands; telephone +31 (0)88–6280–350; fax +31 (0)88–6280–111; email technicalservices@ fokker.com; internet http:// www.myfokkerfleet.com. (6) For information about EASA AD 2020– 0024, contact the EASA, Konrad-AdenauerUfer 3, 50668 Cologne, Germany; telephone +49 221 89990 6017; 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. (7) You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. 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–2020–0450. (8) You may view this material that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email fedreg.legal@ nara.gov, or go to: https://www.archives.gov/ federal-register/cfr/ibr-locations.html. [FR Doc. 2020–10626 Filed 5–19–20; 8:45 am] BILLING CODE 4910–13–P VerDate Sep<11>2014 16:29 May 19, 2020 Jkt 250001 Federal Aviation Administration 14 CFR Part 39 (o) Material Incorporated by Reference Issued on May 4, 2020. Ross Landes, Deputy Director for Regulatory Operations, Compliance & Airworthiness Division, Aircraft Certification Service. DEPARTMENT OF TRANSPORTATION [Docket No. FAA–2020–0101; Product Identifier 2019–NM–190–AD; Amendment 39–19908; AD 2020–09–12] RIN 2120–AA64 Airworthiness Directives; De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. AGENCY: The FAA is adopting a new airworthiness directive (AD) for certain De Havilland Aircraft of Canada Limited Model DHC–8–400 series airplanes. This AD was prompted by a report that certain elevator power control unit (PCU) arm fittings have nonconforming fillet radii. This AD requires an inspection for affected elevator PCU assemblies, inspections of affected elevator PCU arm fittings for nonconforming fillet radii and cracks, replacement if necessary, and reidentification of the affected elevator PCU assemblies. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective June 24, 2020. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of June 24, 2020. ADDRESSES: For service information identified in this final rule, contact De Havilland Aircraft of Canada Limited, Q-Series Technical Help Desk, 123 Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada; phone: 416–375– 4000; fax: 416–375–4539; email: thd@ dehavilland.com; internet: https:// dehavilland.com. You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. It is also available on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA–2020–0101. SUMMARY: 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– PO 00000 Frm 00007 Fmt 4700 Sfmt 4700 30595 0101; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Andrea Jimenez, Aerospace Engineer, Airframe and Propulsion Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516–228–7330; fax: 516– 794–5531; email: 9-avs-nyaco-cos@ faa.gov. SUPPLEMENTARY INFORMATION: Discussion Transport Canada Civil Aviation (TCCA), which is the aviation authority for Canada, has issued Canadian AD CF–2019–36, dated October 18, 2019 (‘‘AD CF–2019–36’’) (also referred to as the Mandatory Continuing Airworthiness Information, or ‘‘the MCAI’’), to correct an unsafe condition for certain De Havilland Aircraft of Canada Limited Model DHC–8–400 series airplanes. You may examine the MCAI in the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA–2020–0101. The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to certain De Havilland Aircraft of Canada Limited Model DHC–8–400 series airplanes. The NPRM published in the Federal Register on February 24, 2020 (85 FR 10344). The NPRM was prompted by a report that certain elevator PCU arm fittings have nonconforming fillet radii. The NPRM proposed to require an inspection for affected elevator PCU assemblies, inspections of affected elevator PCU arm fittings for nonconforming fillet radii and cracks, replacement if necessary, and re-identification of the affected elevator PCU assemblies. The FAA is issuing this AD to address elevator PCU assemblies with nonconforming fillet radii, which could lead to premature failure of the fitting and a jam in one elevator; if the fittings on both elevators fail, a complete loss of elevator control could occur. See the MCAI for additional background information. Comments The FAA gave the public the opportunity to participate in developing this final rule. The FAA received no E:\FR\FM\20MYR1.SGM 20MYR1 30596 Federal Register / Vol. 85, No. 98 / Wednesday, May 20, 2020 / Rules and Regulations • Do not add any additional burden upon the public than was already proposed in the NPRM. comments on the NPRM or on the determination of the cost to the public. Conclusion Related Service Information Under 1 CFR Part 51 The FAA reviewed the relevant data and determined that air safety and the public interest require adopting this final rule as proposed, except for minor editorial changes. The FAA has determined that these minor changes: • Are consistent with the intent that was proposed in the NPRM for addressing the unsafe condition; and De Havilland Aircraft of Canada Limited has issued Service Bulletin 84– 55–10, Revision A, dated July 25, 2019. This service information describes procedures for an inspection for affected elevator PCU assemblies, inspections of affected elevator PCU arm fittings for nonconforming fillet radii and cracks, replacement if necessary, and reidentification of the affected elevator PCU assemblies. This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section. Costs of Compliance The FAA estimates that this AD affects 38 airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD: ESTIMATED COSTS FOR REQUIRED ACTIONS Labor cost Parts cost Cost per product Cost on U.S. operators 5 work-hours × $85 per hour = $425 .......................................................................................... $0 $425 $16,150 The FAA estimates the following costs to do any necessary on-condition replacement that would be required based on the results of any required inspections. The FAA has no way of determining the number of aircraft that might need this on-condition replacement: ESTIMATED COSTS OF ON-CONDITION ACTIONS Labor cost Parts cost 14 work-hours × $85 per hour = $1,190 .......... Up to $9,060 ($1,510 per elevator PCU arm fittings—6 total per airplane) ..... 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. For the reasons discussed above, I certify that this AD: (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. Regulatory Findings This AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. ■ VerDate Sep<11>2014 16:29 May 19, 2020 Jkt 250001 Cost per product Up to $10,250. Previously Held by Bombardier, Inc.): Amendment 39–19908; Docket No. FAA–2020–0101; Product Identifier 2019–NM–190–AD. (a) Effective Date This AD is effective June 24, 2020. (b) Affected ADs None. (c) Applicability List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. This AD applies to De Havilland Aircraft of Canada Limited Model DHC–8–400, –401, and –402 series airplanes, certificated in any category, serial numbers 4001 and subsequent. Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: (d) Subject 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 (AD): ■ 2020–09–12 De Havilland Aircraft of Canada Limited (Type Certificate PO 00000 Frm 00008 Fmt 4700 Sfmt 4700 Air Transport Association (ATA) of America Code 55, Stabilizers. (e) Reason This AD was prompted by a report that certain elevator power control unit (PCU) arm fittings have nonconforming fillet radii. The FAA is issuing this AD to address elevator PCU assemblies with nonconforming fillet radii, which could lead to premature failure of the fitting and a jam in one elevator; if the fittings on both elevators fail, a complete loss of elevator control could occur. (f) Compliance Comply with this AD within the compliance times specified, unless already done. E:\FR\FM\20MYR1.SGM 20MYR1 Federal Register / Vol. 85, No. 98 / Wednesday, May 20, 2020 / Rules and Regulations (g) Definition Affected elevator PCU assemblies are those having part number 85527021–005 or 85527021–006, and having serial number MMC4255 through MMC4276 inclusive. (h) Inspections For airplanes having serial numbers 4001 through 4620 inclusive, within 8,000 flight cycles on the elevator PCU assembly after the effective date of this AD, or before the accumulation of 30,000 total flight cycles on the elevator PCU assembly, whichever occurs first: Do the actions specified in paragraphs (h)(1) and (2) of this AD. (1) Inspect to determine the part number and serial number of each elevator PCU assembly installed on the airplane. A review of airplane maintenance records is acceptable in lieu of this inspection if the part number and serial number of the elevator PCU assembly can be conclusively determined from that review. (2) If, during any inspection or records review required by paragraph (h)(1) of this AD, any affected elevator PCU assembly is found, do a detailed inspection of the elevator PCU arm fittings for undersized fillet radii and cracks of the fillet radii in accordance with Part A of the Accomplishment Instructions of De Havilland Aircraft of Canada Limited Service Bulletin 84–55–10, Revision A, dated July 25, 2019. If no undersized fillet radii or cracks of the fillet radii are found, before further flight, re-identify the affected elevator PCU assembly in accordance with the Accomplishment Instructions of De Havilland Aircraft of Canada Limited Service Bulletin 84–55–10, Revision A, dated July 25, 2019. (i) Corrective Actions If during any inspection of the elevator PCU arm fittings required by paragraph (h)(2) of this AD, any undersized fillet radii or cracks of the fillet radii are found, before further flight, replace the elevator PCU arm fittings and re-identify each affected elevator PCU assembly in accordance with Part B of the Accomplishment Instructions of De Havilland Aircraft of Canada Limited Service Bulletin 84–55–10, Revision A, dated July 25, 2019. (j) Parts Installation Limitation As of the effective date of this AD, no person may install an affected elevator PCU assembly on any airplane, unless it has been re-identified in accordance with the Accomplishment Instructions of De Havilland Aircraft of Canada Limited Service Bulletin 84–55–10, Revision A, dated July 25, 2019. (k) Credit for Previous Actions This paragraph provides credit for actions required by paragraphs (h) and (i) of this AD, if those actions were performed before the effective date of this AD using De Havilland Aircraft of Canada Limited Service Bulletin 84–55–10, dated May 29, 2019. (l) No Reporting Requirement Although De Havilland Aircraft of Canada Limited Service Bulletin 84–55–10, Revision VerDate Sep<11>2014 16:29 May 19, 2020 Jkt 250001 A, dated July 25, 2019, specifies to submit certain information to the manufacturer, this AD does not include that requirement. (m) Other FAA AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, New York 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 ATTN: Program Manager, Continuing Operational Safety, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516– 228–7300; fax: 516–794–5531. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. (2) Contacting the Manufacturer: For any requirement in this AD to obtain instructions from a manufacturer, the instructions must be accomplished using a method approved by the Manager, New York ACO Branch, FAA; or Transport Canada Civil Aviation (TCCA); or De Havilland Aircraft of Canada Limited’s TCCA Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAOauthorized signature. (n) Related Information (1) Refer to Mandatory Continuing Airworthiness Information (MCAI) Canadian AD CF–2019–36, dated October 18, 2019, 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–2020–0101. (2) For more information about this AD, contact Andrea Jimenez, Aerospace Engineer, Airframe and Propulsion Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516– 228–7330; fax: 516–794–5531; email: 9-avsnyaco-cos@faa.gov. (3) Service information identified in this AD that is not incorporated by reference is available at the addresses specified in paragraphs (o)(3) and (4) of this AD. (o) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless this AD specifies otherwise. (i) De Havilland Aircraft of Canada Limited Service Bulletin 84–55–10, Revision A, dated July 25, 2019. (ii) [Reserved] (3) For service information identified in this AD, contact De Havilland Aircraft of Canada Limited, Q-Series Technical Help Desk, 123 Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada; phone: 416–375– PO 00000 Frm 00009 Fmt 4700 Sfmt 4700 30597 4000; fax: 416–375–4539; email: thd@ dehavilland.com; internet: https:// dehavilland.com. (4) You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. (5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email fedreg.legal@nara.gov, or go to: https:// www.archives.gov/federal-register/cfr/ibrlocations.html. Issued on May 6, 2020. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2020–10741 Filed 5–19–20; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2018–0977; Product Identifier 2018–CE–041–AD; Amendment 39–21123; AD 2020–10–05] RIN 2120–AA64 Airworthiness Directives; Rockwell Collins, Inc. Flight Management Systems Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: The FAA is adopting a new airworthiness directive (AD) for certain Rockwell Collins, Inc. (Rockwell Collins) flight management systems (FMS) installed on airplanes. This AD was prompted by reports of the flight management computer (FMC) software issuing incorrect turn commands when the altitude climb field is edited or the temperature compensation is activated on the FMS control display unit. This AD requires disabling the automatic temperature compensation feature of the FMS through the configuration strapping units (CSU) and revising the airplane flight manual (AFM) Limitations section. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective June 24, 2020. The Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD as of June 24, 2020. ADDRESSES: For service information identified in this final rule, contact SUMMARY: E:\FR\FM\20MYR1.SGM 20MYR1

Agencies

[Federal Register Volume 85, Number 98 (Wednesday, May 20, 2020)]
[Rules and Regulations]
[Pages 30595-30597]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-10741]


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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-0101; Product Identifier 2019-NM-190-AD; Amendment 
39-19908; AD 2020-09-12]
RIN 2120-AA64


Airworthiness Directives; De Havilland Aircraft of Canada Limited 
(Type Certificate Previously Held by Bombardier, Inc.) Airplanes

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

ACTION: Final rule.

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

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
certain De Havilland Aircraft of Canada Limited Model DHC-8-400 series 
airplanes. This AD was prompted by a report that certain elevator power 
control unit (PCU) arm fittings have nonconforming fillet radii. This 
AD requires an inspection for affected elevator PCU assemblies, 
inspections of affected elevator PCU arm fittings for nonconforming 
fillet radii and cracks, replacement if necessary, and re-
identification of the affected elevator PCU assemblies. The FAA is 
issuing this AD to address the unsafe condition on these products.

DATES: This AD is effective June 24, 2020.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of June 24, 
2020.

ADDRESSES: For service information identified in this final rule, 
contact De Havilland Aircraft of Canada Limited, Q-Series Technical 
Help Desk, 123 Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada; 
phone: 416-375-4000; fax: 416-375-4539; email: [email protected]; 
internet: https://dehavilland.com. You may view this service 
information at the FAA, Airworthiness Products Section, Operational 
Safety Branch, 2200 South 216th St., Des Moines, WA. For information on 
the availability of this material at the FAA, call 206-231-3195. It is 
also available on the internet at https://www.regulations.gov by 
searching for and locating Docket No. FAA-2020-0101.

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-
0101; or in person at Docket Operations between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays. The AD docket contains 
this final rule, any comments received, and other information. The 
address for Docket Operations is U.S. Department of Transportation, 
Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 
New Jersey Avenue SE, Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Andrea Jimenez, Aerospace Engineer, 
Airframe and Propulsion Section, FAA, New York ACO Branch, 1600 Stewart 
Avenue, Suite 410, Westbury, NY 11590; phone: 516-228-7330; fax: 516-
794-5531; email: [email protected].

SUPPLEMENTARY INFORMATION: 

Discussion

    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian AD CF-2019-36, dated October 
18, 2019 (``AD CF-2019-36'') (also referred to as the Mandatory 
Continuing Airworthiness Information, or ``the MCAI''), to correct an 
unsafe condition for certain De Havilland Aircraft of Canada Limited 
Model DHC-8-400 series airplanes. You may examine the MCAI in the AD 
docket on the internet at https://www.regulations.gov by searching for 
and locating Docket No. FAA-2020-0101.
    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 by adding an AD that would apply to certain De Havilland 
Aircraft of Canada Limited Model DHC-8-400 series airplanes. The NPRM 
published in the Federal Register on February 24, 2020 (85 FR 10344). 
The NPRM was prompted by a report that certain elevator PCU arm 
fittings have nonconforming fillet radii. The NPRM proposed to require 
an inspection for affected elevator PCU assemblies, inspections of 
affected elevator PCU arm fittings for nonconforming fillet radii and 
cracks, replacement if necessary, and re-identification of the affected 
elevator PCU assemblies. The FAA is issuing this AD to address elevator 
PCU assemblies with nonconforming fillet radii, which could lead to 
premature failure of the fitting and a jam in one elevator; if the 
fittings on both elevators fail, a complete loss of elevator control 
could occur. See the MCAI for additional background information.

Comments

    The FAA gave the public the opportunity to participate in 
developing this final rule. The FAA received no

[[Page 30596]]

comments on the NPRM or on the determination of the cost to the public.

Conclusion

    The FAA reviewed the relevant data and determined that air safety 
and the public interest require adopting this final rule as proposed, 
except for minor editorial changes. The FAA has determined that these 
minor changes:
     Are consistent with the intent that was proposed in the 
NPRM for addressing the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM.

Related Service Information Under 1 CFR Part 51

    De Havilland Aircraft of Canada Limited has issued Service Bulletin 
84-55-10, Revision A, dated July 25, 2019. This service information 
describes procedures for an inspection for affected elevator PCU 
assemblies, inspections of affected elevator PCU arm fittings for 
nonconforming fillet radii and cracks, replacement if necessary, and 
re-identification of the affected elevator PCU assemblies. This service 
information is reasonably available because the interested parties have 
access to it through their normal course of business or by the means 
identified in the ADDRESSES section.

Costs of Compliance

    The FAA estimates that this AD affects 38 airplanes of U.S. 
registry. The FAA estimates the following costs to comply with this AD:

                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per       Cost on U.S.
                          Labor cost                              Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
5 work-hours x $85 per hour = $425...........................              $0             $425          $16,150
----------------------------------------------------------------------------------------------------------------

    The FAA estimates the following costs to do any necessary on-
condition replacement that would be required based on the results of 
any required inspections. The FAA has no way of determining the number 
of aircraft that might need this on-condition replacement:

                 Estimated Costs of On-Condition Actions
------------------------------------------------------------------------
         Labor cost                Parts cost         Cost per product
------------------------------------------------------------------------
14 work-hours x $85 per hour  Up to $9,060 ($1,510  Up to $10,250.
 = $1,190.                     per elevator PCU
                               arm fittings--6
                               total per airplane).
------------------------------------------------------------------------

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

    This AD will not have federalism implications under Executive Order 
13132. This AD will not have a substantial direct effect on the States, 
on the relationship between the national government and the States, or 
on the distribution of power and responsibilities among the various 
levels of government.
    For the reasons discussed above, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) 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.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness 
directive (AD):

2020-09-12 De Havilland Aircraft of Canada Limited (Type Certificate 
Previously Held by Bombardier, Inc.): Amendment 39-19908; Docket No. 
FAA-2020-0101; Product Identifier 2019-NM-190-AD.

(a) Effective Date

    This AD is effective June 24, 2020.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to De Havilland Aircraft of Canada Limited Model 
DHC-8-400, -401, and -402 series airplanes, certificated in any 
category, serial numbers 4001 and subsequent.

(d) Subject

    Air Transport Association (ATA) of America Code 55, Stabilizers.

(e) Reason

    This AD was prompted by a report that certain elevator power 
control unit (PCU) arm fittings have nonconforming fillet radii. The 
FAA is issuing this AD to address elevator PCU assemblies with 
nonconforming fillet radii, which could lead to premature failure of 
the fitting and a jam in one elevator; if the fittings on both 
elevators fail, a complete loss of elevator control could occur.

(f) Compliance

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

[[Page 30597]]

(g) Definition

    Affected elevator PCU assemblies are those having part number 
85527021-005 or 85527021-006, and having serial number MMC4255 
through MMC4276 inclusive.

(h) Inspections

    For airplanes having serial numbers 4001 through 4620 inclusive, 
within 8,000 flight cycles on the elevator PCU assembly after the 
effective date of this AD, or before the accumulation of 30,000 
total flight cycles on the elevator PCU assembly, whichever occurs 
first: Do the actions specified in paragraphs (h)(1) and (2) of this 
AD.
    (1) Inspect to determine the part number and serial number of 
each elevator PCU assembly installed on the airplane. A review of 
airplane maintenance records is acceptable in lieu of this 
inspection if the part number and serial number of the elevator PCU 
assembly can be conclusively determined from that review.
    (2) If, during any inspection or records review required by 
paragraph (h)(1) of this AD, any affected elevator PCU assembly is 
found, do a detailed inspection of the elevator PCU arm fittings for 
undersized fillet radii and cracks of the fillet radii in accordance 
with Part A of the Accomplishment Instructions of De Havilland 
Aircraft of Canada Limited Service Bulletin 84-55-10, Revision A, 
dated July 25, 2019. If no undersized fillet radii or cracks of the 
fillet radii are found, before further flight, re-identify the 
affected elevator PCU assembly in accordance with the Accomplishment 
Instructions of De Havilland Aircraft of Canada Limited Service 
Bulletin 84-55-10, Revision A, dated July 25, 2019.

(i) Corrective Actions

    If during any inspection of the elevator PCU arm fittings 
required by paragraph (h)(2) of this AD, any undersized fillet radii 
or cracks of the fillet radii are found, before further flight, 
replace the elevator PCU arm fittings and re-identify each affected 
elevator PCU assembly in accordance with Part B of the 
Accomplishment Instructions of De Havilland Aircraft of Canada 
Limited Service Bulletin 84-55-10, Revision A, dated July 25, 2019.

(j) Parts Installation Limitation

    As of the effective date of this AD, no person may install an 
affected elevator PCU assembly on any airplane, unless it has been 
re-identified in accordance with the Accomplishment Instructions of 
De Havilland Aircraft of Canada Limited Service Bulletin 84-55-10, 
Revision A, dated July 25, 2019.

(k) Credit for Previous Actions

    This paragraph provides credit for actions required by 
paragraphs (h) and (i) of this AD, if those actions were performed 
before the effective date of this AD using De Havilland Aircraft of 
Canada Limited Service Bulletin 84-55-10, dated May 29, 2019.

(l) No Reporting Requirement

    Although De Havilland Aircraft of Canada Limited Service 
Bulletin 84-55-10, Revision A, dated July 25, 2019, specifies to 
submit certain information to the manufacturer, this AD does not 
include that requirement.

(m) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, New 
York 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 ATTN: Program Manager, Continuing Operational 
Safety, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; phone: 516-228-7300; fax: 516-794-5531. Before 
using any approved AMOC, notify your appropriate principal 
inspector, or lacking a principal inspector, the manager of the 
local flight standards district office/certificate holding district 
office.
    (2) Contacting the Manufacturer: For any requirement in this AD 
to obtain instructions from a manufacturer, the instructions must be 
accomplished using a method approved by the Manager, New York ACO 
Branch, FAA; or Transport Canada Civil Aviation (TCCA); or De 
Havilland Aircraft of Canada Limited's TCCA Design Approval 
Organization (DAO). If approved by the DAO, the approval must 
include the DAO-authorized signature.

(n) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian AD CF-2019-36, dated October 18, 2019, 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-2020-0101.
    (2) For more information about this AD, contact Andrea Jimenez, 
Aerospace Engineer, Airframe and Propulsion Section, FAA, New York 
ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; 
phone: 516-228-7330; fax: 516-794-5531; email: [email protected].
    (3) Service information identified in this AD that is not 
incorporated by reference is available at the addresses specified in 
paragraphs (o)(3) and (4) of this AD.

(o) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless this AD specifies otherwise.
    (i) De Havilland Aircraft of Canada Limited Service Bulletin 84-
55-10, Revision A, dated July 25, 2019.
    (ii) [Reserved]
    (3) For service information identified in this AD, contact De 
Havilland Aircraft of Canada Limited, Q-Series Technical Help Desk, 
123 Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada; phone: 416-
375-4000; fax: 416-375-4539; email: [email protected]; internet: 
https://dehavilland.com.
    (4) You may view this service information at the FAA, 
Airworthiness Products Section, Operational Safety Branch, 2200 
South 216th St., Des Moines, WA. For information on the availability 
of this material at the FAA, call 206-231-3195.
    (5) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, email [email protected], or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued on May 6, 2020.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2020-10741 Filed 5-19-20; 8:45 am]
 BILLING CODE 4910-13-P