preamble attached >>>
ADs updated daily at www.Tdata.com
2023-01-08 CONTINENTAL AEROSPACE TECHNOLOGIES GMBH (TYPE CERTIFICATE PREVIOUSLY HELD BY TECHNIFY MOTORS GMBH AND THIELERT AIRCRAFT ENGINES GMBH): Amendment 39-22302; Docket No. FAA-2022-1413; Project Identifier MCAI-2021-00077-E.
(a) EFFECTIVE DATE

    This airworthiness directive (AD) is effective March 9, 2023.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This AD applies to Continental Aerospace Technologies GmbH  (Type Cer-
    tificate previously held by Technify Motors GmbH and Thielert Aircraft
    Engines GmbH) TAE 125-02-99 and TAE 125-02-114 model reciprocating en-
    gines with an engine serial number (S/N) identified in Models Affected
    Continental Aerospace Technologies GmbH  Service Bulletin (SB) CG 125-
    1027 P1, Revision 1, dated May 28, 2021.

(d) SUBJECT

    Joint Aircraft System Component  (JASC)  Code  7200,  Engine (Turbine/
    Turboprop).

(e) UNSAFE CONDITION

    This AD was prompted by manufacturer reports of fractured main bearing
    studs. The  FAA is  issuing this  AD to  prevent failure  of the  main
    bearing stud. The unsafe condition, if not addressed, could result  in
    engine in-flight shutdown and forced landing, damage to the  airplane,
    and injury to the occupants.

(f) COMPLIANCE

    Comply with this AD within the compliance times specified,  unless al-
    ready done.

(g) REQUIRED ACTIONS

(1) For Group 1 and Group 2 engines,  before exceeding the applicable com-
    pliance time in Table 1 to paragraph (g)(1)  of  this  AD,  remove all
    main bearing studs from service if one or more main bearing studs with
    part number (P/N) 05-7211-K009801 and batch number B180703/1,  B184216
    /1, B184216/2,  or  B191277/1 are installed  on the engine and replace
    with parts eligible for installation in accordance  with Instructions,
    paragraphs 4.2  through 4.2.17  of  Continental Aerospace Technologies
    GmbH Repair Instruction RI-05-0017-04, Revision 4, dated April 1, 2021
    (Continental Aerospace Technologies GmbH RI-05-0017-04, Revision 4).

         TABLE 1 TO PARAGRAPH (G)(1)  MAIN BEARING STUD REPLACEMENT
    ______________________________________________________________________
    GROUP    FLIGHT HOURS (FHS)                COMPLIANCE TIME
             SINCE NEW
    ______________________________________________________________________
      1      100 FHs or less       Before exceeding 115 FHs since new, or
                                   during the next scheduled maintenance,
                                   whichever occurs first after the effec-
                                   tive date of this AD

      1      More than 100 FHs     Before exceeding 15 FHs from the effec-
                                   tive date of this AD, or during the
                                   next scheduled maintenance, whichever
                                   occurs first after the effective date
                                   of this AD

      2      100 FHs or less       Before exceeding 200 FHs since new, or
                                   during the next scheduled maintenance
                                   whichever occurs first after the effec-
                                   tive date of this AD

      2      More than 100 FHs     Before exceeding 100 FHs from the effec
                                   -tive date of this AD, or during the
                                   next scheduled maintenance, whichever
                                   occurs first after the effective date
                                   of this AD
    ______________________________________________________________________

Note 1 to paragraph (g)(1): FHs since new  indicated  in Table 1  to para-
graph (g)(1) of this AD are FHs accumulated  by the engine since first in-
stallation on an airplane, on the effective date of this AD.

(2) For engines  not installed on an airplane  as of the effective date of
    this AD,  before further flight,  remove all main bearing studs if one
    or more main bearing studs  with P/N 05-7211-K009801  and batch number
    B180703/1, B184216/1, B184216/2, or B191277/1 are installed on the en-
    gine and replace  with parts eligible  for installation  in accordance
    with Instructions,  paragraphs 4.2 through 4.2.17 of Continental Aero-
    space Technologies GmbH RI-05-0017-04, Revision 4.

(h) INSTALLATION PROHIBITION

    After the effective date of this AD,  do not install onto any engine a
    main bearing stud with P/N 05-7211-K009801 and batch number B180703/1,
    B184216/1, B184216/2, or B191277/1.

(i) DEFINITIONS

(1) For the purpose  of this AD,  Group 1 engines are affected engines in-
    stalled on single-engine airplanes, with main bearing stud with P/N 05
    -7211-K009801  and batch number B180703/1,  B184216/1,  B184216/2,  or
    B191277/1 installed on the engine,  and  affected engines installed on
    twin-engine airplanes, with main bearing stud with P/N 05-7211-K009801
    and batch number B180703/1,  B184216/1,  B184216/2,  or  B191277/1 in-
    stalled on both engines.

(2) For the purpose  of this AD,  Group 2 engines are affected engines in-
    stalled on twin-engine airplanes,  with main bearing stud with P/N 05-
    7211-K009801  and batch number  B180703/1,  B184216/1,  B184216/2,  or
    B191277/1 installed on only one engine.

(3) For the purpose  of this AD,  parts eligible  for installation are any
    main bearing studs that do not have P/N 05-7211-K009801 and batch num-
    ber B180703/1, B184216/1, B184216/2, or B191277/1.

(j) ALTERNATIVE METHODS OF COMPLIANCE (AMOCS)

    The Manager, ECO Branch, FAA,  has the authority to approve  AMOCs for
    this  AD,  if  requested using  the procedures  found in   39.19.  In
    accordance with  39.19, send your request to your principal inspector
    or local Flight Standards District Office, as appropriate. If  sending
    information directly to the manager of the certification office,  send
    it to the  attention of the  person identified in  paragraph (k)(2) of
    this AD and email  to: ANE-AD-AMOC@faa.gov. 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) ADDITIONAL INFORMATION

(1) Refer  to  European Union Aviation Safety Agency  (EASA) AD 2021-0022,
    dated January 18, 2021,  for related information.  This EASA AD may be
    found in the AD docket  at regulations.gov  under Docket No. FAA-2022-
    1413.

(2) For more information about this AD, contact Barbara Caufield, Aviation
    Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA
    01803; phone: (781) 238-7146; email: barbara.caufield@faa.gov.

(l) MATERIAL INCORPORATED BY REFERENCE

(1) The Director of the Federal Register  approved  the  incorporation  by
    reference 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 the AD specifies otherwise.

(i) Continental Aerospace Technologies GmbH  Service Bulletin  CG 125-1027
    P1, Revision 1, dated May 28, 2021.

(ii) Continental Aerospace Technologies GmbH Repair Instruction RI-05-0017
     -04, Revision 4, dated April 1, 2021.

(3) For Continental Aerospace Technologies GmbH service information ident-
    ified  in  this  AD,  contact Continental Aerospace Technologies GmbH,
    Platanenstrasse 14, 09356 Sankt Egidien, Germany; phone: +49 37204 696
    0; email support@continentaldiesel.com; website continentaldiesel.com.

(4) You may view this service information at the FAA,  Airworthiness Prod-
    ucts Section, Operational Safety Branch, 1200 District Avenue, Burling
    -ton, MA 01803.  For information  on the availability of this material
    at the FAA, call (817) 222-5110.

(5) You may view  this service information  that is incorporated by refer-
    ence at the National Archives and Records Administration  (NARA).  For
    information on the availability of this material  at NARA,  email: fr.
    inspection@nara.gov,  or go to: www.archives.gov/federal-register/cfr/
    ibr-locations.html.

Issued on January 6, 2023.  Christina Underwood,  Acting Director, Compli-
ance & Airworthiness Division, Aircraft Certification Service.

FOR FURTHER INFORMATION CONTACT:  Barbara Caufield,  Aviation Safety Engi-
neer, ECO Branch, FAA,  1200 District Avenue, Burlington, MA 01803; phone:
(781) 238-7146; email: barbara.caufield@faa.gov.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2022-1413; Project Identifier MCAI-2021-00077-E;
Amendment 39-22302; AD 2023-01-08]
RIN 2120-AA64

Airworthiness Directives; Continental Aerospace Technologies GmbH
Reciprocating Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain Continental Aerospace Technologies GmbH TAE 125-02-99 and TAE
125-02-114 model reciprocating engines. This AD was prompted by
manufacturer reports of fractured main bearing studs. This AD requires
the removal and replacement of certain main bearing studs. The FAA is
issuing this AD to address the unsafe condition on these products.

DATES: This AD is effective March 9, 2023.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of March 9,
2023.

ADDRESSES:
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2022-1413; 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, the mandatory continuing airworthiness
information (MCAI), 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.
Material Incorporated by Reference:
For service information identified in this final rule,
contact Continental Aerospace Technologies GmbH, Platanenstrasse 14,
09356 Sankt Egidien, Germany; phone: +49 37204 696 0; email:
support@continentaldiesel.com; website: continentaldiesel.com.
You may view this service information at the FAA,
Airworthiness Products Section, Operational Safety Branch, 1200
District Avenue, Burlington, MA 01803. For information on the
availability of this material at the FAA, call (817) 222-5110. It is
also available at regulations.gov under Docket No. FAA-2022-1413.

FOR FURTHER INFORMATION CONTACT: Barbara Caufield, Aviation Safety
Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803;
phone: (781) 238-7146; email: barbara.caufield@faa.gov.

SUPPLEMENTARY INFORMATION:

Background

The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to certain Continental
Aerospace Technologies GmbH TAE 125-02-99 and TAE 125-02-114 model
reciprocating engines. The NPRM published in the Federal Register on
November 09, 2022 (87 FR 67572). The NPRM was prompted by AD 2021-0022,
dated January 18, 2021, issued by the European Union Aviation Safety
Agency (EASA), which is the Technical Agent for the Member States of
the European Union (referred to after this as ``the MCAI''). The MCAI
states that the manufacturer has received reports of fractured main
bearing studs. A fractured main bearing stud provides improper support
to the crankshaft and increases crankshaft clearance, resulting in
crankshaft sensor failures and potential crankshaft fracture. The
manufacturer is investigating the root cause of main bearing stud
failures. To address this unsafe condition, Continental Aerospace
Technologies GmbH published service information to identify the serial
numbers (S/Ns) of the affected engines and specify procedures for
replacement of certain main bearing studs. The MCAI specifies actions
to replace main bearing studs and specifies certain main bearing studs
that are not to be installed onto any engine. This condition, if not
addressed, could result in engine in-flight shutdown and forced
landing, damage to the airplane, and injury to the occupants.
In the NPRM, the FAA proposed to require the removal of certain
main bearing studs from service and replacement with parts eligible for
installation. The NPRM also proposed to prohibit the installation of
certain main bearing studs. The FAA is issuing this AD to address the
unsafe condition on these products.
You may examine the MCAI in the AD docket at regulations.gov under
Docket No. FAA-2022-1413.

Discussion of Final Airworthiness Directive

Comments

The FAA received no comments on the NPRM or on the determination of
the costs.

Conclusion

These products have been approved by the aviation authority of
another country and are 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 referenced above. The FAA reviewed the relevant data and
determined that air safety requires adopting this AD as proposed.
Accordingly, the FAA is issuing this AD to address the unsafe condition
on these products. Except for minor editorial changes, this AD is
adopted as proposed in the NPRM.

Related Service Information Under 1 CFR Part 51

The FAA reviewed Continental Aerospace Technologies GmbH Service
Bulletin (SB) CG 125-1027 P1, Revision 1, dated May 28, 2021. This
service information identifies the S/Ns of the affected engines and
specifies procedures for replacing the main bearing studs. The FAA also
reviewed Continental Aerospace Technologies GmbH Repair Instruction RI-
05-0017-04, Revision 4, dated April 1, 2021. This service information
provides instructions for replacing the main bearing studs.
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 ADDRESSES.

Costs of Compliance

The FAA estimates that this AD affects 92 engines installed on
aircraft of U.S. registry.
The FAA estimates the following costs to comply with this AD:

Estimated Costs

Action
Labor cost
Parts cost
Cost per product
Cost on U.S. operators
Replace main bearing studs 16 work-hours x $85 per hour = $1,360
$5,500
$6,860
$631,120

The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some of the costs of this 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

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.

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.

Sec. 39.13 [Amended]

2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive: