83_FR_47078 83 FR 46898 - Airworthiness Directives; Pratt & Whitney Canada Corp. Turboshaft Engines

83 FR 46898 - Airworthiness Directives; Pratt & Whitney Canada Corp. Turboshaft Engines

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 83, Issue 180 (September 17, 2018)

Page Range46898-46900
FR Document2018-19862

We propose to supersede airworthiness directive (AD) 2015-20- 04, which applies to certain Pratt & Whitney Canada Corp. (P&WC) PT6B- 37A turboshaft engines. AD 2015-20-04 requires initial and repetitive inspections until replacement of the No. 10 bearing, and eventual replacement of the No. 9 bearing, both located in the engine reduction gearbox (RGB) assembly. Since we issued AD 2015-20-04, P&WC has determined that the repetitive inspection of the bearings has an associated risk of gearbox damage or contamination and that the bearing installation required by AD 2015-20-04 does not adequately address the issue of bearing axial movement. This proposed AD would require removal from service and replacement of the No. 9 and No. 10 position bearings. We are proposing this AD to address the unsafe condition on these products.

Federal Register, Volume 83 Issue 180 (Monday, September 17, 2018)
[Federal Register Volume 83, Number 180 (Monday, September 17, 2018)]
[Proposed Rules]
[Pages 46898-46900]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2018-19862]


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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0739; Product Identifier 2015-NE-07-AD]
RIN 2120-AA64


Airworthiness Directives; Pratt & Whitney Canada Corp. Turboshaft 
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to supersede airworthiness directive (AD) 2015-20-
04, which applies to certain Pratt & Whitney Canada Corp. (P&WC) PT6B-
37A turboshaft engines. AD 2015-20-04 requires initial and repetitive 
inspections until replacement of the No. 10 bearing, and eventual 
replacement of the No. 9 bearing, both located in the engine reduction 
gearbox (RGB) assembly. Since we issued AD 2015-20-04, P&WC has 
determined that the repetitive inspection of the bearings has an 
associated risk of gearbox damage or contamination and that the bearing 
installation required by AD 2015-20-04 does not adequately address the 
issue of bearing axial movement. This proposed AD would require removal 
from service and replacement of the No. 9 and No. 10 position bearings. 
We are proposing this AD to address the unsafe condition on these 
products.

DATES: We must receive comments on this proposed AD by November 1, 
2018.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, by any of the following methods:
     Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
     Fax: 202-493-2251.
     Mail: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE, Washington, DC 20590.
     Hand Delivery: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    For service information identified in this NPRM, contact Pratt & 
Whitney Canada Corp., 1000 Marie-Victorin, Longueuil, Quebec, Canada, 
J4G 1A1; phone: 800-268-8000; fax: 450-647-2888; website: http://www.pwc.ca. You may view this service information at the FAA, Engine & 
Propeller Standards Branch, 1200 District Avenue, Burlington, MA 01803. 
For information on the availability of this material at the FAA, call 
781-238-7759.

Examining the AD Docket

    You may examine the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-
0739; or in person at the Docket Operations between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays. The AD docket contains 
this NPRM, the mandatory continuing airworthiness information, 
regulatory evaluation, any comments received, and other information. 
The street address for Docket Operations (phone: 800-647-5527) is 
listed above. Comments will be available in the AD docket shortly after 
receipt.

FOR FURTHER INFORMATION CONTACT: Barbara Caufield, Aerospace Engineer, 
ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 
781-238-7146; fax: 781-238-7199; email: [email protected].

SUPPLEMENTARY INFORMATION: 

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2018-0739; 
Product Identifier 2015-NE-07-AD'' at the beginning of your comments. 
We specifically invite comments on the overall regulatory, economic, 
environmental, and energy aspects of this NPRM. We will consider all 
comments received by the closing date and may amend this NPRM because 
of those comments.
    We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive about this proposed AD.

Discussion

    We issued AD 2015-20-04, Amendment 39-18282 (80 FR 61717, October 
14, 2015), (``AD 2015-20-04''), for certain P&WC PT6B-37A turboshaft 
engines. AD 2015-20-04 requires initial and repetitive inspections 
until replacement of the No. 10 bearing, and eventual replacement of 
the No. 9 bearing, both located in the engine RGB assembly. AD 2015-20-
04 resulted from reports of incorrect engine torque for PT6B-37A 
engines. We issued AD 2015-20-04 to prevent axial movement at the No. 
10 bearing position in the engine RGB assembly, which could result in 
engine overtorque, failure of the engine, in-flight shutdown, and loss 
of the helicopter.

Actions Since AD 2015-20-04 Was Issued

    Since we issued AD 2015-20-04, P&WC has determined that the 
repetitive inspection of the bearings in P&WC Service Bulletin (SB) 
PT6B-72-39095, Revision No. 3, dated December 29, 2014, has an 
associated risk of gearbox damage or contamination. P&WC also 
determined that the bearing installation in P&WC SB No. PT6B-72-39092, 
Revision No. 4, dated December 29, 2014, as required by AD 2015-20-04, 
does not adequately address the issue of bearing axial movement.

Related Service Information Under 1 CFR Part 51

    We reviewed P&WC SB No. PT6B-72-39108, dated September 30, 2016. 
The SB describes procedures for replacing affected bearings. 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.

Other Related Service Information

    We reviewed P&WC SB No. PT6B-72-39092, Revision No. 4, dated 
December 29, 2014. The service information describes procedures for 
removing affected bearings.

FAA's Determination

    We are proposing this AD because we evaluated all the relevant 
information and determined the unsafe condition described previously is 
likely to exist or

[[Page 46899]]

develop in other products of the same type design.

Proposed AD Requirements

    This proposed AD would retain none of the requirements of AD 2015-
20-04. This proposed AD would introduce a new bearing configuration 
that addresses the axial movement at the No. 9 and No. 10 bearing 
positions and remove the repetitive inspection requirements of AD 2015-
20-04. This proposed AD would also remove the previously mandated 
bearing configuration in P&WC SB No. PT6B-72-39092, Revision No. 4, 
dated December 29, 2014.

Costs of Compliance

    We estimate that this proposed AD affects 119 engines installed on 
helicopters of U.S. registry.
    We estimate the following costs to comply with this proposed AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
                Action                         Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Remove and replace No. 9 and No. 10     65 work-hours x $85 per          $37,874         $43,399      $5,164,481
 bearings.                               hour = $5,525.
----------------------------------------------------------------------------------------------------------------

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.
    We are 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.
    This AD is issued in accordance with authority delegated by the 
Executive Director, Aircraft Certification Service, as authorized by 
FAA Order 8000.51C. In accordance with that order, issuance of ADs is 
normally a function of the Compliance and Airworthiness Division, but 
during this transition period, the Executive Director has delegated the 
authority to issue ADs applicable to engines, propellers, and 
associated appliances to the Manager, Engine and Propeller Standards 
Branch, Policy and Innovation Division.

Regulatory Findings

    We have determined that this proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD would not 
have a substantial direct effect on the States, on the relationship 
between the national Government and the States, or on the distribution 
of power and responsibilities among the various levels of government.
    For the reasons discussed above, I certify that the proposed 
regulation:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Is not a ``significant rule'' under the DOT Regulatory Policies 
and Procedures (44 FR 11034, February 26, 1979),
    (3) Will not affect intrastate aviation in Alaska, and
    (4) 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 Proposed Amendment

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

PART 39--AIRWORTHINESS DIRECTIVES

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

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


Sec.  39.13   [Amended]

0
2. The FAA amends Sec.  39.13 by removing airworthiness directive (AD) 
2015-20-04, Amendment 39-18282 (80 FR 61717, October 14, 2015), (``AD 
2015-20-04''), and adding the following new AD:

Pratt & Whitney Canada Corp.: Docket No. FAA-2018-0739; Product 
Identifier 2015-NE-07-AD.

(a) Comments Due Date

    The FAA must receive comments on this AD action by November 1, 
2018.

(b) Affected ADs

    This AD replaces AD 2015-20-04, Amendment 39-18282 (80 FR 61717, 
October 14, 2015).

(c) Applicability

    This AD applies to Pratt & Whitney Canada Corp. (P&WC) PT6B-37A 
turboshaft engines with serial number (S/N) PCE-PU0275 or earlier or 
with engine S/N PCE-PU0278.

(d) Subject

    Joint Aircraft System Component (JASC) Code 7210, Turbine Engine 
Reduction Gear.

(e) Unsafe Condition

    This AD was prompted by reports of incorrect engine torque for 
PT6B-37A turboshaft engines. We are issuing this AD to prevent axial 
movement at the No. 10 bearing position in the engine reduction 
gearbox (RGB) assembly. The unsafe condition, if not addressed, 
could result in engine overtorque, failure of the engine, in-flight 
shutdown, and loss of the helicopter.

(f) Compliance

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

(g) Required Actions

    (1) For affected engines that did not have the bearings replaced 
in accordance with P&WC Service Bulletin (SB) No. PT6B-72-39092, 
Revision No. 4, dated December 29, 2014, or earlier revision:
    (i) Remove from service and replace the No. 9 and No. 10 
position bearings at the next engine shop visit after the effective 
date of this AD, but no later than December 31, 2020, whichever 
occurs first, in accordance with the Accomplishment Instructions, 
paragraphs 3.A. and B., of P&WC SB PT6B-72-39108, dated September 
30, 2016.
    (ii) Reserved.
    (2) For affected engines that had the bearings replaced in 
accordance with P&WC SB No. PT6B-72-39092, Revision No. 4, dated 
December 29, 2014, or earlier revision:
    (i) Remove from service and replace the No. 9 and No. 10 
position bearings before December 31, 2020, in accordance with the 
Accomplishment Instructions, paragraphs 3.A. and B., of P&WC SB 
PT6B-72-39108, dated September 30, 2016.

[[Page 46900]]

    (ii) Reserved.

(h) Definition

    For the purpose of this AD, an ``engine shop visit'' is the 
induction of an engine into the shop for maintenance involving the 
separation of pairs of major mating engine flanges, or any removal 
of the RGB assembly.

(i) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, ECO Branch, FAA, has the authority to approve 
AMOCs for this AD, if requested using the procedures found in 14 CFR 
39.19. In accordance with 14 CFR 39.19, send your request to your 
principal inspector or local Flight Standards District Office, as 
appropriate. If sending information directly to the manager of the 
certification office, send it to the attention of the person 
identified in paragraph (j)(1) of this AD. You may email your 
request to: [email protected].
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the local flight standards district office/certificate holding 
district office.

(j) Related Information

    (1) For more information about this AD, contact Barbara 
Caufield, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, 
Burlington, MA 01803; phone: 781-238-7146; fax: 781-238-7199; email: 
[email protected].
    (2) Refer to Transport Canada AD CF-2015-01R1, dated November 
18, 2016, for more information. You may examine the Transport Canada 
AD in the AD docket on the internet at http://www.regulations.gov by 
searching for and locating it in Docket No. FAA-2018-0739.
    (3) For service information identified in this AD, contact Pratt 
& Whitney Canada Corp., 1000 Marie-Victorin, Longueuil, Quebec, 
Canada J4G 1A1; phone: 800-268-8000; fax: 450-647-2888; website: 
http://www.pwc.ca. You may view this service information at the FAA, 
Engine & Propeller Standards Branch, 1200 District Avenue, 
Burlington, MA 01803. For information on the availability of this 
material at the FAA, call 781-238-7759.


    Issued in Burlington, Massachusetts, on September 7, 2018.
Robert J. Ganley,
Manager, Engine & Propeller Standards Branch, Aircraft Certification 
Service.
[FR Doc. 2018-19862 Filed 9-14-18; 8:45 am]
 BILLING CODE 4910-13-P



                                                 46898               Federal Register / Vol. 83, No. 180 / Monday, September 17, 2018 / Proposed Rules

                                                 Stewart Avenue, Suite 410, Westbury, NY                 11.43 and 11.45, by any of the following                We will post all comments we
                                                 11590; telephone 516–228–7323; fax 516–                 methods:                                              receive, without change, to http://
                                                 794–5531; email 9-avs-nyaco-cos@faa.gov.                  • Federal eRulemaking Portal: Go to                 www.regulations.gov, including any
                                                   (3) For service information identified in             http://www.regulations.gov. Follow the                personal information you provide. We
                                                 this AD, contact Bombardier, Inc., 400 Côte-
                                                 Vertu Road West, Dorval, Québec H4S 1Y9,
                                                                                                         instructions for submitting comments.                 will also post a report summarizing each
                                                 Canada; telephone 514–855–5000; fax 514–                  • Fax: 202–493–2251.                                substantive verbal contact we receive
                                                 855–7401; email thd.crj@                                  • Mail: U.S. Department of                          about this proposed AD.
                                                 aero.bombardier.com; internet http://                   Transportation, Docket Operations, M–
                                                                                                                                                               Discussion
                                                 www.bombardier.com. You may view this                   30, West Building Ground Floor, Room
                                                 service information at the FAA, Transport               W12–140, 1200 New Jersey Avenue SE,                      We issued AD 2015–20–04,
                                                 Standards Branch, 2200 South 216th St., Des             Washington, DC 20590.                                 Amendment 39–18282 (80 FR 61717,
                                                 Moines, WA. For information on the                        • Hand Delivery: Deliver to Mail                    October 14, 2015), (‘‘AD 2015–20–04’’),
                                                 availability of this material at the FAA, call          address above between 9 a.m. and 5                    for certain P&WC PT6B–37A turboshaft
                                                 206–231–3195.
                                                                                                         p.m., Monday through Friday, except                   engines. AD 2015–20–04 requires initial
                                                   Issued in Des Moines, Washington, on                  Federal holidays.                                     and repetitive inspections until
                                                 August 30, 2018.                                          For service information identified in               replacement of the No. 10 bearing, and
                                                 Jeffrey E. Duven,                                       this NPRM, contact Pratt & Whitney                    eventual replacement of the No. 9
                                                 Director, System Oversight Division, Aircraft           Canada Corp., 1000 Marie-Victorin,                    bearing, both located in the engine RGB
                                                 Certification Service.                                  Longueuil, Quebec, Canada, J4G 1A1;                   assembly. AD 2015–20–04 resulted from
                                                 [FR Doc. 2018–19841 Filed 9–14–18; 8:45 am]             phone: 800–268–8000; fax: 450–647–                    reports of incorrect engine torque for
                                                 BILLING CODE 4910–13–P                                  2888; website: http://www.pwc.ca. You                 PT6B–37A engines. We issued AD
                                                                                                         may view this service information at the              2015–20–04 to prevent axial movement
                                                                                                         FAA, Engine & Propeller Standards                     at the No. 10 bearing position in the
                                                 DEPARTMENT OF TRANSPORTATION                            Branch, 1200 District Avenue,                         engine RGB assembly, which could
                                                                                                         Burlington, MA 01803. For information                 result in engine overtorque, failure of
                                                 Federal Aviation Administration                         on the availability of this material at the           the engine, in-flight shutdown, and loss
                                                                                                         FAA, call 781–238–7759.                               of the helicopter.
                                                 14 CFR Part 39
                                                                                                         Examining the AD Docket                               Actions Since AD 2015–20–04 Was
                                                 [Docket No. FAA–2018–0739; Product
                                                                                                           You may examine the AD docket on                    Issued
                                                 Identifier 2015–NE–07–AD]
                                                                                                         the internet at http://                                  Since we issued AD 2015–20–04,
                                                 RIN 2120–AA64
                                                                                                         www.regulations.gov by searching for                  P&WC has determined that the
                                                 Airworthiness Directives; Pratt &                       and locating Docket No. FAA–2018–                     repetitive inspection of the bearings in
                                                 Whitney Canada Corp. Turboshaft                         0739; or in person at the Docket                      P&WC Service Bulletin (SB) PT6B–72–
                                                 Engines                                                 Operations between 9 a.m. and 5 p.m.,                 39095, Revision No. 3, dated December
                                                                                                         Monday through Friday, except Federal                 29, 2014, has an associated risk of
                                                 AGENCY: Federal Aviation                                holidays. The AD docket contains this                 gearbox damage or contamination.
                                                 Administration (FAA), DOT.                              NPRM, the mandatory continuing                        P&WC also determined that the bearing
                                                 ACTION: Notice of proposed rulemaking                   airworthiness information, regulatory                 installation in P&WC SB No. PT6B–72–
                                                 (NPRM).                                                 evaluation, any comments received, and                39092, Revision No. 4, dated December
                                                                                                         other information. The street address for             29, 2014, as required by AD 2015–20–
                                                 SUMMARY:   We propose to supersede                      Docket Operations (phone: 800–647–                    04, does not adequately address the
                                                 airworthiness directive (AD) 2015–20–                   5527) is listed above. Comments will be               issue of bearing axial movement.
                                                 04, which applies to certain Pratt &                    available in the AD docket shortly after
                                                 Whitney Canada Corp. (P&WC) PT6B–                       receipt.                                              Related Service Information Under 1
                                                 37A turboshaft engines. AD 2015–20–04                                                                         CFR Part 51
                                                                                                         FOR FURTHER INFORMATION CONTACT:
                                                 requires initial and repetitive                         Barbara Caufield, Aerospace Engineer,                    We reviewed P&WC SB No. PT6B–72–
                                                 inspections until replacement of the No.                ECO Branch, FAA, 1200 District                        39108, dated September 30, 2016. The
                                                 10 bearing, and eventual replacement of                 Avenue, Burlington, MA 01803; phone:                  SB describes procedures for replacing
                                                 the No. 9 bearing, both located in the                  781–238–7146; fax: 781–238–7199;                      affected bearings. This service
                                                 engine reduction gearbox (RGB)                          email: barbara.caufield@faa.gov.                      information is reasonably available
                                                 assembly. Since we issued AD 2015–20–                                                                         because the interested parties have
                                                                                                         SUPPLEMENTARY INFORMATION:
                                                 04, P&WC has determined that the                                                                              access to it through their normal course
                                                 repetitive inspection of the bearings has               Comments Invited                                      of business or by the means identified
                                                 an associated risk of gearbox damage or                    We invite you to send any written                  in the ADDRESSES section.
                                                 contamination and that the bearing                      relevant data, views, or arguments about
                                                 installation required by AD 2015–20–04                                                                        Other Related Service Information
                                                                                                         this proposed AD. Send your comments
                                                 does not adequately address the issue of                to an address listed under the                           We reviewed P&WC SB No. PT6B–72–
                                                 bearing axial movement. This proposed                   ADDRESSES section. Include ‘‘Docket No.               39092, Revision No. 4, dated December
                                                 AD would require removal from service                   FAA–2018–0739; Product Identifier                     29, 2014. The service information
                                                 and replacement of the No. 9 and No.
daltland on DSKBBV9HB2PROD with PROPOSALS




                                                                                                         2015–NE–07–AD’’ at the beginning of                   describes procedures for removing
                                                 10 position bearings. We are proposing                  your comments. We specifically invite                 affected bearings.
                                                 this AD to address the unsafe condition                 comments on the overall regulatory,
                                                 on these products.                                                                                            FAA’s Determination
                                                                                                         economic, environmental, and energy
                                                 DATES: We must receive comments on                      aspects of this NPRM. We will consider                  We are proposing this AD because we
                                                 this proposed AD by November 1, 2018.                   all comments received by the closing                  evaluated all the relevant information
                                                 ADDRESSES: You may send comments,                       date and may amend this NPRM                          and determined the unsafe condition
                                                 using the procedures found in 14 CFR                    because of those comments.                            described previously is likely to exist or


                                            VerDate Sep<11>2014   16:40 Sep 14, 2018   Jkt 244001   PO 00000   Frm 00013   Fmt 4702   Sfmt 4702   E:\FR\FM\17SEP1.SGM   17SEP1


                                                                     Federal Register / Vol. 83, No. 180 / Monday, September 17, 2018 / Proposed Rules                                              46899

                                                 develop in other products of the same                   9 and No. 10 bearing positions and                    Costs of Compliance
                                                 type design.                                            remove the repetitive inspection
                                                                                                         requirements of AD 2015–20–04. This                      We estimate that this proposed AD
                                                 Proposed AD Requirements                                                                                      affects 119 engines installed on
                                                                                                         proposed AD would also remove the
                                                   This proposed AD would retain none                    previously mandated bearing                           helicopters of U.S. registry.
                                                 of the requirements of AD 2015–20–04.                   configuration in P&WC SB No. PT6B–                       We estimate the following costs to
                                                 This proposed AD would introduce a                      72–39092, Revision No. 4, dated                       comply with this proposed AD:
                                                 new bearing configuration that
                                                                                                         December 29, 2014.
                                                 addresses the axial movement at the No.

                                                                                                                      ESTIMATED COSTS
                                                                                                                                                                                 Cost per      Cost on U.S.
                                                                       Action                                              Labor cost                          Parts cost        product        operators

                                                 Remove and replace No. 9 and No. 10 bear-              65 work-hours × $85 per hour = $5,525 ........             $37,874          $43,399       $5,164,481
                                                   ings.



                                                 Authority for This Rulemaking                             For the reasons discussed above, I                  (b) Affected ADs
                                                    Title 49 of the United States Code                   certify that the proposed regulation:                   This AD replaces AD 2015–20–04,
                                                 specifies the FAA’s authority to issue                    (1) Is not a ‘‘significant regulatory               Amendment 39–18282 (80 FR 61717, October
                                                                                                                                                               14, 2015).
                                                 rules on aviation safety. Subtitle I,                   action’’ under Executive Order 12866,
                                                 Section 106, describes the authority of                   (2) Is not a ‘‘significant rule’’ under             (c) Applicability
                                                 the FAA Administrator. Subtitle VII,                    the DOT Regulatory Policies and                          This AD applies to Pratt & Whitney Canada
                                                 Aviation Programs, describes in more                    Procedures (44 FR 11034, February 26,                 Corp. (P&WC) PT6B–37A turboshaft engines
                                                 detail the scope of the Agency’s                                                                              with serial number (S/N) PCE–PU0275 or
                                                                                                         1979),
                                                 authority.                                                                                                    earlier or with engine S/N PCE–PU0278.
                                                    We are issuing this rulemaking under                   (3) Will not affect intrastate aviation
                                                                                                                                                               (d) Subject
                                                 the authority described in Subtitle VII,                in Alaska, and
                                                                                                                                                                 Joint Aircraft System Component (JASC)
                                                 Part A, Subpart III, Section 44701,                       (4) Will not have a significant                     Code 7210, Turbine Engine Reduction Gear.
                                                 ‘‘General requirements.’’ Under that                    economic impact, positive or negative,
                                                 section, Congress charges the FAA with                  on a substantial number of small entities             (e) Unsafe Condition
                                                 promoting safe flight of civil aircraft in              under the criteria of the Regulatory                     This AD was prompted by reports of
                                                 air commerce by prescribing regulations                 Flexibility Act.                                      incorrect engine torque for PT6B–37A
                                                 for practices, methods, and procedures                                                                        turboshaft engines. We are issuing this AD to
                                                 the Administrator finds necessary for                   List of Subjects in 14 CFR Part 39                    prevent axial movement at the No. 10 bearing
                                                                                                                                                               position in the engine reduction gearbox
                                                 safety in air commerce. This regulation                   Air transportation, Aircraft, Aviation              (RGB) assembly. The unsafe condition, if not
                                                 is within the scope of that authority                   safety, Incorporation by reference,                   addressed, could result in engine overtorque,
                                                 because it addresses an unsafe condition                Safety.                                               failure of the engine, in-flight shutdown, and
                                                 that is likely to exist or develop on                                                                         loss of the helicopter.
                                                 products identified in this rulemaking                  The Proposed Amendment
                                                                                                                                                               (f) Compliance
                                                 action.
                                                    This AD is issued in accordance with                   Accordingly, under the authority                       Comply with this AD within the
                                                 authority delegated by the Executive                    delegated to me by the Administrator,                 compliance times specified, unless already
                                                                                                         the FAA proposes to amend 14 CFR part                 done.
                                                 Director, Aircraft Certification Service,
                                                 as authorized by FAA Order 8000.51C.                    39 as follows:                                        (g) Required Actions
                                                 In accordance with that order, issuance                 PART 39—AIRWORTHINESS                                    (1) For affected engines that did not have
                                                 of ADs is normally a function of the                    DIRECTIVES                                            the bearings replaced in accordance with
                                                 Compliance and Airworthiness                                                                                  P&WC Service Bulletin (SB) No. PT6B–72–
                                                 Division, but during this transition                                                                          39092, Revision No. 4, dated December 29,
                                                 period, the Executive Director has                      ■ 1. The authority citation for part 39               2014, or earlier revision:
                                                 delegated the authority to issue ADs                    continues to read as follows:                            (i) Remove from service and replace the
                                                                                                             Authority: 49 U.S.C. 106(g), 40113, 44701.        No. 9 and No. 10 position bearings at the next
                                                 applicable to engines, propellers, and                                                                        engine shop visit after the effective date of
                                                 associated appliances to the Manager,                                                                         this AD, but no later than December 31, 2020,
                                                                                                         § 39.13   [Amended]
                                                 Engine and Propeller Standards Branch,                                                                        whichever occurs first, in accordance with
                                                 Policy and Innovation Division.                         ■ 2. The FAA amends § 39.13 by                        the Accomplishment Instructions, paragraphs
                                                 Regulatory Findings                                     removing airworthiness directive (AD)                 3.A. and B., of P&WC SB PT6B–72–39108,
                                                                                                         2015–20–04, Amendment 39–18282 (80                    dated September 30, 2016.
                                                   We have determined that this                          FR 61717, October 14, 2015), (‘‘AD                       (ii) Reserved.
                                                 proposed AD would not have federalism                   2015–20–04’’), and adding the following                  (2) For affected engines that had the
daltland on DSKBBV9HB2PROD with PROPOSALS




                                                 implications under Executive Order                                                                            bearings replaced in accordance with P&WC
                                                                                                         new AD:
                                                 13132. This proposed AD would not                                                                             SB No. PT6B–72–39092, Revision No. 4,
                                                                                                         Pratt & Whitney Canada Corp.: Docket No.              dated December 29, 2014, or earlier revision:
                                                 have a substantial direct effect on the
                                                                                                             FAA–2018–0739; Product Identifier                    (i) Remove from service and replace the
                                                 States, on the relationship between the                     2015–NE–07–AD.                                    No. 9 and No. 10 position bearings before
                                                 national Government and the States, or                                                                        December 31, 2020, in accordance with the
                                                 on the distribution of power and                        (a) Comments Due Date                                 Accomplishment Instructions, paragraphs
                                                 responsibilities among the various                       The FAA must receive comments on this                3.A. and B., of P&WC SB PT6B–72–39108,
                                                 levels of government.                                   AD action by November 1, 2018.                        dated September 30, 2016.



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                                                 46900               Federal Register / Vol. 83, No. 180 / Monday, September 17, 2018 / Proposed Rules

                                                    (ii) Reserved.                                       DEPARTMENT OF TRANSPORTATION                          Examining the AD Docket
                                                 (h) Definition                                                                                                  You may examine the AD docket on
                                                                                                         Federal Aviation Administration                       the internet at http://
                                                    For the purpose of this AD, an ‘‘engine
                                                 shop visit’’ is the induction of an engine into                                                               www.regulations.gov by searching for
                                                                                                         14 CFR Part 39
                                                 the shop for maintenance involving the                                                                        and locating Docket No. FAA–2018–
                                                 separation of pairs of major mating engine              [Docket No. FAA–2018–0771; Product                    0771; or in person at Docket Operations
                                                                                                         Identifier 2018–CE–029–AD]                            between 9 a.m. and 5 p.m., Monday
                                                 flanges, or any removal of the RGB assembly.
                                                                                                         RIN 2120–AA64                                         through Friday, except Federal holidays.
                                                 (i) Alternative Methods of Compliance                                                                         The AD docket contains this proposed
                                                 (AMOCs)                                                 Airworthiness Directives; GA 8 Airvan                 AD, the regulatory evaluation, any
                                                    (1) The Manager, ECO Branch, FAA, has                (Pty) Ltd Airplanes                                   comments received, and other
                                                 the authority to approve AMOCs for this AD,                                                                   information. The street address for
                                                 if requested using the procedures found in 14           AGENCY: Federal Aviation                              Docket Operations (telephone (800)
                                                 CFR 39.19. In accordance with 14 CFR 39.19,             Administration (FAA), Department of                   647–5527) is in the ADDRESSES section.
                                                 send your request to your principal inspector           Transportation (DOT).                                 Comments will be available in the AD
                                                 or local Flight Standards District Office, as           ACTION: Notice of proposed rulemaking                 docket shortly after receipt.
                                                 appropriate. If sending information directly            (NPRM).                                               FOR FURTHER INFORMATION CONTACT:
                                                 to the manager of the certification office,                                                                   Doug Rudolph, Aerospace Engineer,
                                                                                                         SUMMARY:   We propose to adopt a new
                                                 send it to the attention of the person                                                                        FAA, Small Airplane Standards Branch,
                                                                                                         airworthiness directive (AD) for GA 8
                                                 identified in paragraph (j)(1) of this AD. You                                                                901 Locust, Room 301, Kansas City,
                                                                                                         Airvan (Pty) Ltd Models GA8 and GA8–
                                                 may email your request to: ANE-AD-AMOC@                                                                       Missouri 64106; telephone: (816) 329–
                                                                                                         TC320 airplanes. This proposed AD
                                                 faa.gov.                                                                                                      4059; fax: (816) 329–4090; email:
                                                                                                         results from mandatory continuing
                                                    (2) Before using any approved AMOC,                                                                        doug.rudolph@faa.gov.
                                                 notify your appropriate principal inspector,
                                                                                                         airworthiness information (MCAI)
                                                 or lacking a principal inspector, the manager
                                                                                                         originated by an aviation authority of                SUPPLEMENTARY INFORMATION:
                                                                                                         another country to identify and correct
                                                 of the local flight standards district office/                                                                Comments Invited
                                                 certificate holding district office.
                                                                                                         an unsafe condition on an aviation
                                                                                                         product. The MCAI describes the unsafe                  We invite you to send any written
                                                 (j) Related Information                                 condition as certain wing strut fittings              relevant data, views, or arguments about
                                                   (1) For more information about this AD,               manufactured with incorrect grain                     this proposed AD. Send your comments
                                                 contact Barbara Caufield, Aerospace                     orientation, which has an unknown                     to an address listed under the
                                                 Engineer, ECO Branch, FAA, 1200 District                effect on fatigue related concerns. We                ADDRESSES section. Include ‘‘Docket No.
                                                 Avenue, Burlington, MA 01803; phone: 781–               are issuing this proposed AD to require               FAA–2018–0771; Product Identifier
                                                 238–7146; fax: 781–238–7199; email:                     actions to address the unsafe condition               2018–CE–029–AD’’ at the beginning of
                                                 barbara.caufield@faa.gov.                               on these products.                                    your comments. We specifically invite
                                                   (2) Refer to Transport Canada AD CF–                  DATES: We must receive comments on                    comments on the overall regulatory,
                                                 2015–01R1, dated November 18, 2016, for                 this proposed AD by November 1, 2018.                 economic, environmental, and energy
                                                 more information. You may examine the                   ADDRESSES: You may send comments by                   aspects of this proposed AD. We will
                                                 Transport Canada AD in the AD docket on                 any of the following methods:                         consider all comments received by the
                                                 the internet at http://www.regulations.gov by              • Federal eRulemaking Portal: Go to                closing date and may amend this
                                                 searching for and locating it in Docket No.             http://www.regulations.gov. Follow the                proposed AD because of those
                                                 FAA–2018–0739.                                          instructions for submitting comments.                 comments.
                                                   (3) For service information identified in                • Fax: (202) 493–2251.                               We will post all comments we
                                                 this AD, contact Pratt & Whitney Canada                    • Mail: U.S. Department of                         receive, without change, to http://
                                                 Corp., 1000 Marie-Victorin, Longueuil,                  Transportation, Docket Operations,                    regulations.gov, including any personal
                                                 Quebec, Canada J4G 1A1; phone: 800–268–                 M–30, West Building Ground Floor,                     information you provide. We will also
                                                 8000; fax: 450–647–2888; website: http://               Room W12–140, 1200 New Jersey                         post a report summarizing each
                                                 www.pwc.ca. You may view this service                   Avenue SE, Washington, DC 20590.                      substantive verbal contact we receive
                                                 information at the FAA, Engine & Propeller                 • Hand Delivery: U.S. Department of                about this proposed AD.
                                                 Standards Branch, 1200 District Avenue,                 Transportation, Docket Operations,
                                                                                                                                                               Discussion
                                                 Burlington, MA 01803. For information on                M–30, West Building Ground Floor,
                                                 the availability of this material at the FAA,           Room W12–140, 1200 New Jersey                           The Civil Aviation Safety Authority
                                                 call 781–238–7759.                                      Avenue SE, Washington, DC 20590,                      (CASA), which is the aviation authority
                                                                                                         between 9 a.m. and 5 p.m., Monday                     for Australia, has issued AD No. AD/
                                                   Issued in Burlington, Massachusetts, on               through Friday, except Federal holidays.              GA8/9, Amendment 1, dated May 29,
                                                 September 7, 2018.                                         For service information identified in              2018 (referred to after this as ‘‘the
                                                 Robert J. Ganley,                                       this proposed AD, contact GA 8 Airvan                 MCAI’’), to correct an unsafe condition
                                                 Manager, Engine & Propeller Standards                   (Pty) Ltd, c/o GippsAero Pty Ltd, Attn:               for the specified products. The MCAI
                                                 Branch, Aircraft Certification Service.                 Technical Services, P.O. Box 881,                     states:
                                                 [FR Doc. 2018–19862 Filed 9–14–18; 8:45 am]             Morwell Victoria 3840, Australia;                       Amendment 1 of this [CASA] AD is issued
                                                                                                         telephone: +61 03 5172 1200; fax: +61                 to amend the replacement times as Service
daltland on DSKBBV9HB2PROD with PROPOSALS




                                                 BILLING CODE 4910–13–P
                                                                                                         03 5172 1201; email: aircraft.techpubs@               Bulletin GA8–2017–174 Issue 2 changed the
                                                                                                         mahindraaerospace.com. You may                        mandatory replacement times for part
                                                                                                         review this referenced service                        number GA8–570026–035 strut from 6000
                                                                                                                                                               hours time in service or 3 calendar years to
                                                                                                         information at the FAA, Policy and                    9000 hours time in service or 5 calendar
                                                                                                         Innovation Division, 901 Locust, Kansas               years, whichever occurs first.
                                                                                                         City, Missouri 64106. For information                   A manufacturing quality escape has
                                                                                                         on the availability of this material at the           resulted in wing strut fittings in the effective
                                                                                                         FAA, call (816) 329–4148.                             serial number range to be manufactured with



                                            VerDate Sep<11>2014   16:40 Sep 14, 2018   Jkt 244001   PO 00000   Frm 00015   Fmt 4702   Sfmt 4702   E:\FR\FM\17SEP1.SGM   17SEP1



Document Created: 2018-09-15 01:37:57
Document Modified: 2018-09-15 01:37:57
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionProposed Rules
ActionNotice of proposed rulemaking (NPRM).
DatesWe must receive comments on this proposed AD by November 1, 2018.
ContactBarbara Caufield, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7146; fax: 781-238-7199; email: [email protected]
FR Citation83 FR 46898 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

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