Airworthiness Directives; Bombardier, Inc., Airplanes, 27028-27031 [2021-10467]

Download as PDF khammond on DSKJM1Z7X2PROD with RULES 27028 Federal Register / Vol. 86, No. 95 / Wednesday, May 19, 2021 / Rules and Regulations Specialty occupation means an occupation which requires theoretical and practical application of a body of highly specialized knowledge in fields of human endeavor including, but not limited to, architecture, engineering, mathematics, physical sciences, social sciences, medicine and health, education, business specialties, accounting, law, theology, and the arts, and which requires the attainment of a bachelor’s degree or higher in a specific specialty, or its equivalent, as a minimum for entry into the occupation in the United States. * * * * * United States employer means a person, firm, corporation, contractor, or other association or organization in the United States which: (1) Engages a person to work within the United States; (2) Has an employer-employee relationship with respect to employees under this part; as indicated by the fact that it may hire, pay, fire, supervise, or otherwise control the work of any such employee; and (3) Has an Internal Revenue Service Tax identification number. * * * * * (iii) * * * (A) Standards for specialty occupation position. To qualify as a specialty occupation, the position must meet one of the following criteria: (1) A baccalaureate or higher degree or its equivalent is normally the minimum requirement for entry into the particular position; (2) The degree requirement is common to the industry in parallel positions among similar organizations or, in the alternative, an employer may show that its particular position is so complex or unique that it can be performed only by an individual with a degree; (3) The employer normally requires a degree or its equivalent for the position; or (4) The nature of the specific duties are so specialized and complex that knowledge required to perform the duties is usually associated with the attainment of a baccalaureate or higher degree. * * * * * (9) * * * (iii) * * * (A)(1) H–1B petition in a specialty occupation. An approved petition classified under section 101(a)(15)(H)(i)(b) of the Act for an alien in a specialty occupation shall be valid for a period of up to three years but may VerDate Sep<11>2014 16:04 May 18, 2021 Jkt 253001 not exceed the validity period of the labor condition application. * * * * * Alejandro N. Mayorkas, Secretary, U.S. Department of Homeland Security. [FR Doc. 2021–10489 Filed 5–18–21; 8:45 am] BILLING CODE 9111–97–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2021–0101; Project Identifier MCAI–2020–01084–T; Amendment 39–21531; AD 2021–09–17] RIN 2120–AA64 Airworthiness Directives; 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 Bombardier, Inc., Model BD–100–1A10 airplanes. This AD was prompted by a report that the inboard multi-function spoiler (MFS) surfaces failed to deploy, which was caused by missing notches on the piston seal of the MFS power control units (PCUs). This AD requires an inspection to determine if affected MFS PCUs are installed, and replacement of affected MFS PCUs. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective June 23, 2021. The Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD as of June 23, 2021. ADDRESSES: For service information identified in this final rule, contact Bombardier, Inc., 200 Coˆte-Vertu Road West, Dorval, Que´bec H4S 2A3, Canada; North America toll-free phone: 1–866– 538–1247 or direct-dial phone: 1–514– 855–2999; email: ac.yul@ aero.bombardier.com; internet: https:// www.bombardier.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–2021–0101. SUMMARY: PO 00000 Frm 00002 Fmt 4700 Sfmt 4700 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–2021– 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: Siddeeq Bacchus, Aerospace Engineer, Mechanical Systems and Administrative Services Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516– 228–7362; fax: 516–794–5531; email: 9avs-nyaco-cos@faa.gov. SUPPLEMENTARY INFORMATION: Background Transport Canada Civil Aviation (TCCA), which is the aviation authority for Canada, has issued TCCA AD CF– 2020–26, dated August 4, 2020 (also referred to as the Mandatory Continuing Airworthiness Information, or the MCAI), to correct an unsafe condition for certain Bombardier, Inc., Model BD– 100–1A10 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–2021–0101. The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to certain Bombardier, Inc., Model BD–100–1A10 airplanes. The NPRM published in the Federal Register on February 26, 2021 (86 FR 11667). The NPRM was prompted by a report that the inboard MFS surfaces failed to deploy, which was caused by missing notches on the piston seal of the MFS PCUs. The NPRM proposed to require an inspection to determine if affected MFS PCUs are installed, and replacement of affected MFS PCUs. The FAA is issuing this AD to address MFS PCUs with improperly configured piston seals, which could cause degraded proportional lift dumping (PLD) function. This condition could hinder the airplane from carrying out an emergency descent, resulting in structural damage and injury to occupants. See the MCAI for additional background information. E:\FR\FM\19MYR1.SGM 19MYR1 Federal Register / Vol. 86, No. 95 / Wednesday, May 19, 2021 / Rules and Regulations • 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. Comments The FAA gave the public the opportunity to participate in developing this final rule. The FAA received no comments on the NPRM or on the determination of the cost to the public. Related Service Information Under 1 CFR Part 51 Conclusion Bombardier has issued the following service information. This service information describes procedures for an inspection to determine if affected MFS PCUs are installed, and replacement of affected MFS PCUs. These documents are distinct since they apply to different airplane configurations. 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: 27029 • Bombardier Service Bulletin 100– 27–17, Revision 03, dated June 19, 2020. • Bombardier Service Bulletin 350– 27–010, dated June 19, 2020. 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 630 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 Up to 19 work-hours × $85 per hour = Up to $1,615. Up to $19,600 (up to 4 MFS PCUs per airplane). Up to $21,215 (up to 4 MFS PCUs per airplane). Up to $13,365,450 (up to 4 MFS PCUs per airplane). According to the manufacturer, some or all of the costs of this AD may be covered under warranty, thereby reducing the cost impact on affected operators. The FAA does not control warranty coverage for affected operators. As a result, the FAA has included all known costs in the cost estimate. 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. khammond on DSKJM1Z7X2PROD with RULES 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 VerDate Sep<11>2014 16:04 May 18, 2021 Jkt 253001 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. (b) Affected ADs List of Subjects in 14 CFR Part 39 (e) Reason Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. This AD was prompted by a report that the inboard multi-function spoiler (MFS) surfaces failed to deploy, which was caused by missing notches on the piston seal of the MFS power control units (PCUs). The FAA is issuing this AD to address MFS PCUs with improperly configured piston seals, which could cause degraded proportional lift dumping (PLD) function. This condition could hinder the airplane from carrying out an emergency descent, resulting in structural damage and injury to occupants. 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 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2021–09–17 Bombardier, Inc.: Amendment 39–21531; Docket No. FAA–2021–0101; Project Identifier MCAI–2020–01084–T. (a) Effective Date This airworthiness directive (AD) is effective June 23, 2021. Frm 00003 Fmt 4700 (c) Applicability This AD applies to Bombardier, Inc., Model BD–100–1A10 airplanes, certificated in any category, serial numbers 20003 through 20457 inclusive, and 20501 through 22999 inclusive. (d) Subject Air Transport Association (ATA) of America Code 27, Flight controls. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Definition of Affected Part 2. The FAA amends § 39.13 by adding the following new airworthiness directive: ■ PO 00000 None. Sfmt 4700 For the purpose of this AD, an affected MFS PCU is an MFS PCU that has a serial number of 0001 through 1410 inclusive, except for those MFS PCUs having the serial numbers listed in figure 1 to paragraph (g) of this AD and except for those with the suffix ‘‘A’’ at the end of the serial number (i.e., serial number 1025A). E:\FR\FM\19MYR1.SGM 19MYR1 27030 Federal Register / Vol. 86, No. 95 / Wednesday, May 19, 2021 / Rules and Regulations Figure 1 to paragraph (g): Serial numbers that are not affected 66 605 1287 1395 72 671 1334 1396 175 720 1337 1397 200 727 1368 1400 331 728 1369 1401 441 773 1370 1403 448 778 1373 1404 449 812 1376 1405 456 831 1380 1406 470 887 1382 1407 494 991 1385 1408 495 1049 1386 1409 498 1208 1387 - 499 1236 1388 - 561 1284 1394 - (1) Within 12 months after the effective date of this AD: Do an inspection to determine if affected MFS PCUs are installed on the airplane in accordance with Paragraph 2.B. of Bombardier Service Bulletin 100–27– 17, Revision 03, dated June 19, 2020; or Bombardier Service Bulletin 350–27–010, dated June 19, 2020; as applicable. A review of airplane maintenance records is acceptable in lieu of this inspection if the serial number of the MFS PCU can be conclusively determined from that review. (2) Within 12 months after the effective date of this AD: Replace any affected MFS PCUs with MFS PCUs that are not affected, in accordance with Paragraphs 2.C., 2.D., 2.E., and 2.F., as applicable, of Bombardier Service Bulletin 100–27–17, Revision 03, dated June 19, 2020; or Bombardier Service Bulletin 350–27–010, dated June 19, 2020; as applicable. VerDate Sep<11>2014 16:04 May 18, 2021 Jkt 253001 (i) Parts Installation Prohibition As of the effective date of this AD, no person may install an affected MFS PCU, on any airplane. (j) 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 responsible Flight Standards 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 PO 00000 Frm 00004 Fmt 4700 Sfmt 4700 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, New York ACO Branch, FAA; or Transport Canada Civil Aviation (TCCA); or Bombardier, Inc.’s TCCA Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature. (k) Related Information (1) Refer to Mandatory Continuing Airworthiness Information (MCAI) TCCA AD CF–2020–26, dated August 4, 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–2021–0101. (2) For more information about this AD, contact Siddeeq Bacchus, Aerospace E:\FR\FM\19MYR1.SGM 19MYR1 ER19MY21.003</GPH> khammond on DSKJM1Z7X2PROD with RULES (h) Required Actions Federal Register / Vol. 86, No. 95 / Wednesday, May 19, 2021 / Rules and Regulations Engineer, Mechanical Systems and Administrative Services Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516– 228–7362; fax: 516–794–5531; email: 9-avsnyaco-cos@faa.gov. (l) 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) Bombardier Service Bulletin 100–27–17, Revision 03, dated June 19, 2020. (ii) Bombardier Service Bulletin 350–27– 010, dated June 19, 2020. (3) For service information identified in this AD, contact Bombardier, Inc., 200 CoˆteVertu Road West, Dorval, Que´bec H4S 2A3, Canada; North America toll-free phone: 1– 866–538–1247 or direct-dial phone: 1–514– 855–2999; email: ac.yul@ aero.bombardier.com; internet: https:// www.bombardier.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 April 23, 2021. Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–10467 Filed 5–18–21; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2020–0973; Project Identifier MCAI–2020–01113–T; Amendment 39–21527; AD 2021–09–13] RIN 2120–AA64 khammond on DSKJM1Z7X2PROD with RULES Airworthiness Directives; ATR–GIE Avions de Transport Re´gional Airplanes Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. AGENCY: Examining the AD Docket The FAA is superseding Airworthiness Directives (AD) 2000–23– 04 R1 and AD 2018–20–14, which SUMMARY: VerDate Sep<11>2014 16:04 May 18, 2021 Jkt 253001 applied to certain ATR–GIE Avions de Transport Re´gional Model ATR42–500 airplanes. AD 2000–23–04 R1 and AD 2018–20–14 required revising the maintenance or inspection program, as applicable, to incorporate new and/or more restrictive maintenance requirements and airworthiness limitations. This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations; as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. This AD was prompted by the FAA’s determination that new or more restrictive airworthiness limitations are necessary. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective June 23, 2021. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of June 23, 2021. The Director of the Federal Register approved the incorporation by reference of certain other publications listed in this AD as of November 20, 2018 (83 FR 52123, October 16, 2018). ADDRESSES: For EASA material incorporated by reference (IBR) in this AD, contact EASA, Konrad-AdenauerUfer 3, 50668 Cologne, Germany; telephone +49 221 8999 000; email ADs@easa.europa.eu; internet www.easa.europa.eu. You may find this IBR material on the EASA website at https://ad.easa.europa.eu. For ATR–GIE service information identified in this AD, contact ATR—GIE Avions de Transport Re´gional, 1 Alle´e Pierre Nadot, 31712 Blagnac Cedex, France; telephone +33 (0) 5 62 21 62 21; fax +33 (0) 5 62 21 67 18; email continued.airworthiness@atr aircraft.com; https://www.atraircraft.com. You may view this IBR 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. It is also available in the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2020– 0973. You may examine the AD docket on the internet at https:// www.regulations.gov by searching fMonday through Friday, except Federal holidays. The AD docket contains this final rule, any comments received, and PO 00000 Frm 00005 Fmt 4700 Sfmt 4700 27031 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: Shahram Daneshmandi, Aerospace Engineer, Large Aircraft Section, International Validation Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone and fax 206–231– 3220; email Shahram.Daneshmandi@ faa.gov. SUPPLEMENTARY INFORMATION: Background EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 2020–0263, dated December 1, 2020 (EASA AD 2020–0263) (also referred to as the Mandatory Continuing Airworthiness Information, or the MCAI), to correct an unsafe condition for all Model ATR 42– 400 and ATR 42–500 airplanes. Model ATR 42–400 airplanes are not certificated by the FAA and are not included on the U.S. type certificate data sheet; this AD therefore does not include those airplanes in the applicability. Airplanes with an original airworthiness certificate or original export certificate of airworthiness issued after July 7, 2020 must comply with the airworthiness limitations specified as part of the approved type design and referenced on the type certificate data sheet; this AD therefore does not include those airplanes in the applicability. The FAA issued a supplemental notice of proposed rulemaking (SNPRM) to amend 14 CFR part 39 to supersede AD 2000–23–04 R1, Amendment 39– 12174 (66 FR 19381, April 16, 2001) (AD 2000–23–04 R1) and AD 2018–20– 14, Amendment 39–19448 (83 FR 52123, October 16, 2018) (AD 2018–20– 14). ADs 2000–23–04 R1 and 2018–20– 14 applied to certain ATR–GIE Avions de Transport Re´gional Model ATR42– 500 airplanes. The SNPRM published in the Federal Register on February 24, 2021 (86 FR 11169). The FAA preceded the SNPRM with a notice of proposed rulemaking (NPRM) that published in the Federal Register on October 29, 2020 (85 FR 68503). The NPRM was prompted by the FAA’s determination that new or more restrictive airworthiness limitations are necessary. The NPRM proposed to require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The SNPRM proposed to require revising the existing E:\FR\FM\19MYR1.SGM 19MYR1

Agencies

[Federal Register Volume 86, Number 95 (Wednesday, May 19, 2021)]
[Rules and Regulations]
[Pages 27028-27031]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-10467]


=======================================================================
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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-0101; Project Identifier MCAI-2020-01084-T; 
Amendment 39-21531; AD 2021-09-17]
RIN 2120-AA64


Airworthiness Directives; 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 Bombardier, Inc., Model BD-100-1A10 airplanes. This AD was 
prompted by a report that the inboard multi-function spoiler (MFS) 
surfaces failed to deploy, which was caused by missing notches on the 
piston seal of the MFS power control units (PCUs). This AD requires an 
inspection to determine if affected MFS PCUs are installed, and 
replacement of affected MFS PCUs. The FAA is issuing this AD to address 
the unsafe condition on these products.

DATES: This AD is effective June 23, 2021.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of June 23, 
2021.

ADDRESSES: For service information identified in this final rule, 
contact Bombardier, Inc., 200 C[ocirc]te-Vertu Road West, Dorval, 
Qu[eacute]bec H4S 2A3, Canada; North America toll-free phone: 1-866-
538-1247 or direct-dial phone: 1-514-855-2999; email: 
[email protected]; internet: https://www.bombardier.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-2021-
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-2021-
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: Siddeeq Bacchus, Aerospace Engineer, 
Mechanical Systems and Administrative Services Section, FAA, New York 
ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 
516-228-7362; fax: 516-794-5531; email: [email protected].

SUPPLEMENTARY INFORMATION:

Background

    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued TCCA AD CF-2020-26, dated August 4, 
2020 (also referred to as the Mandatory Continuing Airworthiness 
Information, or the MCAI), to correct an unsafe condition for certain 
Bombardier, Inc., Model BD-100-1A10 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-2021-0101.
    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 by adding an AD that would apply to certain Bombardier, 
Inc., Model BD-100-1A10 airplanes. The NPRM published in the Federal 
Register on February 26, 2021 (86 FR 11667). The NPRM was prompted by a 
report that the inboard MFS surfaces failed to deploy, which was caused 
by missing notches on the piston seal of the MFS PCUs. The NPRM 
proposed to require an inspection to determine if affected MFS PCUs are 
installed, and replacement of affected MFS PCUs. The FAA is issuing 
this AD to address MFS PCUs with improperly configured piston seals, 
which could cause degraded proportional lift dumping (PLD) function. 
This condition could hinder the airplane from carrying out an emergency 
descent, resulting in structural damage and injury to occupants. See 
the MCAI for additional background information.

[[Page 27029]]

Comments

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

    Bombardier has issued the following service information. This 
service information describes procedures for an inspection to determine 
if affected MFS PCUs are installed, and replacement of affected MFS 
PCUs. These documents are distinct since they apply to different 
airplane configurations.
     Bombardier Service Bulletin 100-27-17, Revision 03, dated 
June 19, 2020.
     Bombardier Service Bulletin 350-27-010, dated June 19, 
2020.
    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 630 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
----------------------------------------------------------------------------------------------------------------
Up to 19 work[dash]hours x $85 per     Up to $19,600 (up to 4   Up to $21,215 (up to 4   Up to $13,365,450 (up
 hour = Up to $1,615.                   MFS PCUs per airplane).  MFS PCUs per airplane).  to 4 MFS PCUs per
                                                                                          airplane).
----------------------------------------------------------------------------------------------------------------

    According to the manufacturer, some or all of the costs of this AD 
may be covered under warranty, thereby reducing the cost impact on 
affected operators. The FAA does not control warranty coverage for 
affected operators. As a result, the FAA has included all known costs 
in the cost estimate.

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:

2021-09-17 Bombardier, Inc.: Amendment 39-21531; Docket No. FAA-
2021-0101; Project Identifier MCAI-2020-01084-T.

(a) Effective Date

    This airworthiness directive (AD) is effective June 23, 2021.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc., Model BD-100-1A10 
airplanes, certificated in any category, serial numbers 20003 
through 20457 inclusive, and 20501 through 22999 inclusive.

(d) Subject

    Air Transport Association (ATA) of America Code 27, Flight 
controls.

(e) Reason

    This AD was prompted by a report that the inboard multi-function 
spoiler (MFS) surfaces failed to deploy, which was caused by missing 
notches on the piston seal of the MFS power control units (PCUs). 
The FAA is issuing this AD to address MFS PCUs with improperly 
configured piston seals, which could cause degraded proportional 
lift dumping (PLD) function. This condition could hinder the 
airplane from carrying out an emergency descent, resulting in 
structural damage and injury to occupants.

(f) Compliance

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

(g) Definition of Affected Part

    For the purpose of this AD, an affected MFS PCU is an MFS PCU 
that has a serial number of 0001 through 1410 inclusive, except for 
those MFS PCUs having the serial numbers listed in figure 1 to 
paragraph (g) of this AD and except for those with the suffix ``A'' 
at the end of the serial number (i.e., serial number 1025A).

[[Page 27030]]

[GRAPHIC] [TIFF OMITTED] TR19MY21.003

(h) Required Actions

    (1) Within 12 months after the effective date of this AD: Do an 
inspection to determine if affected MFS PCUs are installed on the 
airplane in accordance with Paragraph 2.B. of Bombardier Service 
Bulletin 100-27-17, Revision 03, dated June 19, 2020; or Bombardier 
Service Bulletin 350-27-010, dated June 19, 2020; as applicable. A 
review of airplane maintenance records is acceptable in lieu of this 
inspection if the serial number of the MFS PCU can be conclusively 
determined from that review.
    (2) Within 12 months after the effective date of this AD: 
Replace any affected MFS PCUs with MFS PCUs that are not affected, 
in accordance with Paragraphs 2.C., 2.D., 2.E., and 2.F., as 
applicable, of Bombardier Service Bulletin 100-27-17, Revision 03, 
dated June 19, 2020; or Bombardier Service Bulletin 350-27-010, 
dated June 19, 2020; as applicable.

(i) Parts Installation Prohibition

    As of the effective date of this AD, no person may install an 
affected MFS PCU, on any airplane.

(j) 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 responsible Flight Standards 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 
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, New York ACO 
Branch, FAA; or Transport Canada Civil Aviation (TCCA); or 
Bombardier, Inc.'s TCCA Design Approval Organization (DAO). If 
approved by the DAO, the approval must include the DAO-authorized 
signature.

(k) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) TCCA AD CF-2020-26, dated August 4, 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-2021-0101.
    (2) For more information about this AD, contact Siddeeq Bacchus, 
Aerospace

[[Page 27031]]

Engineer, Mechanical Systems and Administrative Services Section, 
FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, 
NY 11590; phone: 516-228-7362; fax: 516-794-5531; email: [email protected].

(l) 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) Bombardier Service Bulletin 100-27-17, Revision 03, dated 
June 19, 2020.
    (ii) Bombardier Service Bulletin 350-27-010, dated June 19, 
2020.
    (3) For service information identified in this AD, contact 
Bombardier, Inc., 200 C[ocirc]te-Vertu Road West, Dorval, 
Qu[eacute]bec H4S 2A3, Canada; North America toll-free phone: 1-866-
538-1247 or direct-dial phone: 1-514-855-2999; email: 
[email protected]; internet: https://www.bombardier.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 April 23, 2021.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives, Compliance & Airworthiness 
Division, Aircraft Certification Service.
[FR Doc. 2021-10467 Filed 5-18-21; 8:45 am]
BILLING CODE 4910-13-P

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