83 FR 9818 - Airworthiness Directives; Bell Helicopter Textron Canada Helicopters

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 83, Issue 46 (March 8, 2018)

Page Range		9818-9819
FR Document		2018-04651

We propose to adopt a new airworthiness directive (AD) for Bell Helicopter Textron Canada (BHTC) Model 429 helicopters. This proposed AD would require inspecting each main rotor pitch link rod end bearing assembly (bearing) for wear and play. This proposed AD is prompted by reports of worn bearings. The actions of this proposed AD are intended to prevent an unsafe condition on these products.

Federal Register, Volume 83 Issue 46 (Thursday, March 8, 2018)

[Federal Register Volume 83, Number 46 (Thursday, March 8, 2018)]
[Proposed Rules]
[Pages 9818-9819]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2018-04651]


========================================================================
Proposed Rules
                                                Federal Register
________________________________________________________________________

This section of the FEDERAL REGISTER contains notices to the public of 
the proposed issuance of rules and regulations. The purpose of these 
notices is to give interested persons an opportunity to participate in 
the rule making prior to the adoption of the final rules.

========================================================================


Federal Register / Vol. 83, No. 46 / Thursday, March 8, 2018 / 
Proposed Rules

[[Page 9818]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0433; Product Identifier 2016-SW-078-AD]
RIN 2120-AA64


Airworthiness Directives; Bell Helicopter Textron Canada 
Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
Bell Helicopter Textron Canada (BHTC) Model 429 helicopters. This 
proposed AD would require inspecting each main rotor pitch link rod end 
bearing assembly (bearing) for wear and play. This proposed AD is 
prompted by reports of worn bearings. The actions of this proposed AD 
are intended to prevent an unsafe condition on these products.

DATES: We must receive comments on this proposed AD by May 7, 2018.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Docket: Go to http://www.regulations.gov. Follow the online instructions for sending your 
comments electronically.
     Fax: 202-493-2251.
     Mail: Send comments to the U.S. Department of 
Transportation, Docket Operations, M-30, West Building Ground Floor, 
Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590-0001.
     Hand Delivery: Deliver to the ``Mail'' address between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.

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-2017-
0433; 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 proposed AD, the Transport Canada AD, the economic evaluation, any 
comments received, and other information. The street address for Docket 
Operations (telephone 800-647-5527) is in the ADDRESSES section. 
Comments will be available in the AD docket shortly after receipt.
    For service information identified in this proposed rule, contact 
Bell Helicopter Textron Canada Limited, 12,800 Rue de l'Avenir, 
Mirabel, Quebec J7J1R4; telephone (450) 437-2862 or (800) 363-8023; fax 
(450) 433-0272; or at http://www.bellcustomer.com/files/. You may 
review the referenced service information at the FAA, Office of the 
Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N-321, 
Fort Worth, TX 76177.

FOR FURTHER INFORMATION CONTACT: David Hatfield, Aviation Safety 
Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 
10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone (817) 222-5110; 
email [email protected].

SUPPLEMENTARY INFORMATION:

Comments Invited

    We invite you to participate in this rulemaking by submitting 
written comments, data, or views. We also invite comments relating to 
the economic, environmental, energy, or federalism impacts that might 
result from adopting the proposals in this document. The most helpful 
comments reference a specific portion of the proposal, explain the 
reason for any recommended change, and include supporting data. To 
ensure the docket does not contain duplicate comments, commenters 
should send only one copy of written comments, or if comments are filed 
electronically, commenters should submit only one time.
    We will file in the docket all comments that we receive, as well as 
a report summarizing each substantive public contact with FAA personnel 
concerning this proposed rulemaking. Before acting on this proposal, we 
will consider all comments we receive on or before the closing date for 
comments. We will consider comments filed after the comment period has 
closed if it is possible to do so without incurring expense or delay. 
We may change this proposal in light of the comments we receive.

Discussion

    Transport Canada, which is the aviation authority for Canada, has 
issued Canadian AD No. CF-2016-39, dated December 12, 2016, to correct 
an unsafe condition for BHTC Model 429 helicopters, serial numbers 
57001 and subsequent. Transport Canada advises of reports of worn 
bearings adversely affecting the helicopters' handling qualities. 
Transport Canada states the scheduled inspection interval of 12 months 
or 800 hours is not sufficient to detect and correct a worn bearing 
under the current wear rate. Additionally, according to Transport 
Canada, the combination of the blade weight, positioning of the 
swashplate, and the preload of elastomers can make bearing play 
difficult to detect during a preflight exterior check. Transport Canada 
determined it necessary to implement an inspection frequent enough to 
detect a worn bearing in order to prevent a bearing from failing, 
adversely affecting handling qualities, and damaging adjacent 
components. These conditions could lead to loss of control of the 
helicopter. Transport Canada AD CF-2016-39 therefore requires 
inspecting bearing part number (P/N) 429-010-433-101/-103 for play and 
potential wear and replacing it if necessary, within 30 days from the 
effective date of its AD and at subsequent intervals not to exceed 50 
hours air time.

FAA's Determination

    These helicopters have been approved by the aviation authority of 
Canada and are approved for operation in the United States. Pursuant to 
our bilateral agreement with Canada, Transport Canada, its technical 
representative, has notified us of the unsafe condition described its 
AD. We are proposing this AD because we evaluated all known relevant 
information and determined that an unsafe condition is likely to exist 
or develop on other products of the same type design.

Related Service Information Under 1 CFR Part 51

    We reviewed Bell Helicopter Alert Service Bulletin 429-11-03, 
Revision A, dated January 13, 2015 (ASB), which specifies inspecting 
bearing P/N 429-010-433-101 and P/N 429-010-433-

[[Page 9819]]

103 within 10 flight hours and every 50 hours for play and potential 
wear.
    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.

Proposed AD Requirements

    This proposed AD would require, within 20 hours time-in-service 
(TIS) and thereafter at intervals not to exceed 50 hours TIS, visually 
inspecting each bearing for wear and play. This proposed AD also would 
require replacing parts that exceed allowable limits before further 
flight.

Differences Between This Proposed AD and the Transport Canada AD

    This proposed AD would require initially inspecting the bearing 
within 20 hours TIS, while the Transport Canada AD requires the initial 
inspection within 30 days.

Costs of Compliance

    We estimate that this proposed AD would affect 64 helicopters of 
U.S. Registry and that labor costs average $85 per work-hour. Based on 
these estimates, we expect the following costs:
     Inspecting the bearing would require 2 work-hours and no 
parts for a cost of $170 per helicopter and $10,880 for the U.S. fleet 
per inspection cycle.
     Replacing a -101 bearing would require 1 work-hour and 
$3,560 for parts for a cost of $3,645 per bearing. Replacing a -103 
bearing would require 1 work-hour and $3,365 for parts for a cost of 
$3,450 per bearing.

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.

Regulatory Findings

    We 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, I certify this 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 to the extent that 
it justifies making a regulatory distinction; 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.
    We prepared an economic evaluation of the estimated costs to comply 
with this proposed AD and placed it in the AD docket.

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 adding the following new airworthiness 
directive (AD):

Bell Helicopter Textron Canada Limited: Docket No. FAA-2017-0433; 
Product Identifier 2016-SW-078-AD.

(a) Applicability

    This AD applies to Bell Helicopter Textron Canada Limited Model 
429 helicopters, serial numbers 57001 and larger, with a main rotor 
pitch link rod end bearing assembly (bearing) part number (P/N) 429-
010-433-101 or 429-010-433-103 installed, certificated in any 
category.

(b) Unsafe Condition

    This AD defines the unsafe condition as a worn bearing. This 
condition could result in failure of a bearing, which could lead to 
reduced helicopter handling, damage to other components, and 
subsequent loss of helicopter control.

(c) Comments Due Date

    We must receive comments by May 7, 2018.

(d) Compliance

    You are responsible for performing each action required by this 
AD within the specified compliance time unless it has already been 
accomplished prior to that time.

(e) Required Actions

    Within 20 hours time-in-service (TIS) and thereafter at 
intervals not to exceed 50 hours TIS:
    (1) Inspect the upper and lower pitch link rod ends for axial 
and radial bearing play by rolling the bearings through all angles, 
paying particular attention to the areas depicted in Figure 1 of 
Bell Helicopter Alert Service Bulletin 429-11-03, Revision A, dated 
January 13, 2015.
    (2) If there is any play in a bearing, remove the pitch link 
assembly and perform a dimensional inspection of the axial and 
radial bearing play. Measure the play at the angle that results in 
the maximum amount of play. Replace the rod end assembly before 
further flight if bearing play exceeds 0.010 inch for axial 
direction or 0.005 inch for radial direction.

(f) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Safety Management Section, Rotorcraft Standards 
Branch, FAA, may approve AMOCs for this AD. Send your proposal to: 
David Hatfield, Aviation Safety Engineer, Safety Management Section, 
Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy, Fort Worth, 
TX 76177; telephone (817) 222-5110; email [email protected].
    (2) For operations conducted under a 14 CFR part 119 operating 
certificate or under 14 CFR part 91, subpart K, we suggest that you 
notify your principal inspector, or lacking a principal inspector, 
the manager of the local flight standards district office or 
certificate holding district office before operating any aircraft 
complying with this AD through an AMOC.

(g) Additional Information

    The subject of this AD is addressed in Transport Canada AD No. 
CF-2016-39, dated December 12, 2016. You may view the Transport 
Canada AD on the internet at http://www.regulations.gov in the AD 
Docket.

(h) Subject

    Joint Aircraft Service Component (JASC) Code: 6200, Main Rotor 
System.

    Issued in Fort Worth, Texas, on February 21, 2018.
Scott A. Horn,
Deputy Director for Regulatory Operations, Compliance & Airworthiness 
Division, Aircraft Certification Service.
[FR Doc. 2018-04651 Filed 3-7-18; 8:45 am]
 BILLING CODE 4910-13-P

9818

Proposed Rules Federal Register
Vol. 83, No. 46

Thursday, March 8, 2018

This section of the FEDERAL REGISTER 0433; or in person at Docket Operations expense or delay. We may change this
contains notices to the public of the proposed between 9 a.m. and 5 p.m., Monday proposal in light of the comments we
issuance of rules and regulations. The through Friday, except Federal holidays. receive.
purpose of these notices is to give interested The AD docket contains this proposed
persons an opportunity to participate in the Discussion
AD, the Transport Canada AD, the
rule making prior to the adoption of the final Transport Canada, which is the
rules.
economic evaluation, any comments
received, and other information. The aviation authority for Canada, has
street address for Docket Operations issued Canadian AD No. CF–2016–39,
(telephone 800–647–5527) is in the dated December 12, 2016, to correct an
DEPARTMENT OF TRANSPORTATION
ADDRESSES section. Comments will be unsafe condition for BHTC Model 429
Federal Aviation Administration available in the AD docket shortly after helicopters, serial numbers 57001 and
receipt. subsequent. Transport Canada advises
14 CFR Part 39 For service information identified in of reports of worn bearings adversely
this proposed rule, contact Bell affecting the helicopters’ handling
[Docket No. FAA–2017–0433; Product qualities. Transport Canada states the
Identifier 2016–SW–078–AD]
Helicopter Textron Canada Limited,
12,800 Rue de l’Avenir, Mirabel, Quebec scheduled inspection interval of 12
RIN 2120–AA64 J7J1R4; telephone (450) 437–2862 or months or 800 hours is not sufficient to
(800) 363–8023; fax (450) 433–0272; or detect and correct a worn bearing under
Airworthiness Directives; Bell at http://www.bellcustomer.com/files/. the current wear rate. Additionally,
Helicopter Textron Canada Helicopters You may review the referenced service according to Transport Canada, the
information at the FAA, Office of the combination of the blade weight,
AGENCY: Federal Aviation
Regional Counsel, Southwest Region, positioning of the swashplate, and the
Administration (FAA), DOT.
10101 Hillwood Pkwy., Room 6N–321, preload of elastomers can make bearing
ACTION: Notice of proposed rulemaking play difficult to detect during a preflight
(NPRM). Fort Worth, TX 76177.
exterior check. Transport Canada
FOR FURTHER INFORMATION CONTACT:
SUMMARY: We propose to adopt a new determined it necessary to implement
David Hatfield, Aviation Safety
airworthiness directive (AD) for Bell an inspection frequent enough to detect
Engineer, Safety Management Section,
Helicopter Textron Canada (BHTC) a worn bearing in order to prevent a
Rotorcraft Standards Branch, FAA,
Model 429 helicopters. This proposed bearing from failing, adversely affecting
10101 Hillwood Pkwy., Fort Worth, TX
AD would require inspecting each main handling qualities, and damaging
76177; telephone (817) 222–5110; email adjacent components. These conditions
rotor pitch link rod end bearing david.hatfield@faa.gov.
assembly (bearing) for wear and play. could lead to loss of control of the
SUPPLEMENTARY INFORMATION: helicopter. Transport Canada AD CF–
This proposed AD is prompted by
reports of worn bearings. The actions of Comments Invited 2016–39 therefore requires inspecting
this proposed AD are intended to bearing part number (P/N) 429–010–
We invite you to participate in this 433–101/–103 for play and potential
prevent an unsafe condition on these rulemaking by submitting written wear and replacing it if necessary,
products. comments, data, or views. We also within 30 days from the effective date
DATES: We must receive comments on invite comments relating to the of its AD and at subsequent intervals not
this proposed AD by May 7, 2018. economic, environmental, energy, or to exceed 50 hours air time.
ADDRESSES: You may send comments by federalism impacts that might result
from adopting the proposals in this FAA’s Determination
any of the following methods:
• Federal eRulemaking Docket: Go to document. The most helpful comments These helicopters have been approved
http://www.regulations.gov. Follow the reference a specific portion of the by the aviation authority of Canada and
online instructions for sending your proposal, explain the reason for any are approved for operation in the United
comments electronically. recommended change, and include States. Pursuant to our bilateral
• Fax: 202–493–2251. supporting data. To ensure the docket agreement with Canada, Transport
• Mail: Send comments to the U.S. does not contain duplicate comments, Canada, its technical representative, has
Department of Transportation, Docket commenters should send only one copy notified us of the unsafe condition
Operations, M–30, West Building of written comments, or if comments are described its AD. We are proposing this
Ground Floor, Room W12–140, 1200 filed electronically, commenters should AD because we evaluated all known
New Jersey Avenue SE, Washington, DC submit only one time. relevant information and determined
20590–0001. We will file in the docket all that an unsafe condition is likely to
• Hand Delivery: Deliver to the comments that we receive, as well as a exist or develop on other products of the
‘‘Mail’’ address between 9 a.m. and 5 report summarizing each substantive same type design.
rmajette on DSKBCKNHB2PROD with PROPOSALS

p.m., Monday through Friday, except public contact with FAA personnel
concerning this proposed rulemaking. Related Service Information Under 1
Federal holidays.
Before acting on this proposal, we will CFR Part 51
Examining the AD Docket consider all comments we receive on or We reviewed Bell Helicopter Alert
You may examine the AD docket on before the closing date for comments. Service Bulletin 429–11–03, Revision A,
the internet at http:// We will consider comments filed after dated January 13, 2015 (ASB), which
www.regulations.gov by searching for the comment period has closed if it is specifies inspecting bearing P/N 429–
and locating Docket No. FAA–2017– possible to do so without incurring 010–433–101 and P/N 429–010–433–

VerDate Sep<11>2014 14:51 Mar 07, 2018 Jkt 244001 PO 00000 Frm 00001 Fmt 4702 Sfmt 4702 E:\FR\FM\08MRP1.SGM 08MRP1

Federal Register / Vol. 83, No. 46 / Thursday, March 8, 2018 / Proposed Rules 9819

103 within 10 flight hours and every 50 Regulatory Findings reduced helicopter handling, damage to other
hours for play and potential wear. components, and subsequent loss of
We determined that this proposed AD helicopter control.
This service information is reasonably would not have federalism implications
available because the interested parties under Executive Order 13132. This (c) Comments Due Date
have access to it through their normal proposed AD would not have a We must receive comments by May 7,
course of business or by the means substantial direct effect on the States, on 2018.
identified in the ADDRESSES section. the relationship between the national (d) Compliance
Proposed AD Requirements Government and the States, or on the
You are responsible for performing each
distribution of power and
action required by this AD within the
This proposed AD would require, responsibilities among the various specified compliance time unless it has
within 20 hours time-in-service (TIS) levels of government. already been accomplished prior to that time.
and thereafter at intervals not to exceed For the reasons discussed, I certify
50 hours TIS, visually inspecting each this proposed regulation: (e) Required Actions
bearing for wear and play. This 1. Is not a ‘‘significant regulatory Within 20 hours time-in-service (TIS) and
proposed AD also would require action’’ under Executive Order 12866; thereafter at intervals not to exceed 50 hours
replacing parts that exceed allowable 2. Is not a ‘‘significant rule’’ under the TIS:
limits before further flight. DOT Regulatory Policies and Procedures (1) Inspect the upper and lower pitch link
(44 FR 11034, February 26, 1979); rod ends for axial and radial bearing play by
Differences Between This Proposed AD rolling the bearings through all angles,
3. Will not affect intrastate aviation in
and the Transport Canada AD paying particular attention to the areas
Alaska to the extent that it justifies
depicted in Figure 1 of Bell Helicopter Alert
This proposed AD would require making a regulatory distinction; and Service Bulletin 429–11–03, Revision A,
initially inspecting the bearing within 4. Will not have a significant dated January 13, 2015.
20 hours TIS, while the Transport economic impact, positive or negative, (2) If there is any play in a bearing, remove
Canada AD requires the initial on a substantial number of small entities the pitch link assembly and perform a
inspection within 30 days. under the criteria of the Regulatory dimensional inspection of the axial and
Flexibility Act. radial bearing play. Measure the play at the
Costs of Compliance We prepared an economic evaluation angle that results in the maximum amount of
We estimate that this proposed AD of the estimated costs to comply with play. Replace the rod end assembly before
this proposed AD and placed it in the further flight if bearing play exceeds 0.010
would affect 64 helicopters of U.S.
AD docket. inch for axial direction or 0.005 inch for
Registry and that labor costs average $85 radial direction.
per work-hour. Based on these List of Subjects in 14 CFR Part 39
estimates, we expect the following costs: (f) Alternative Methods of Compliance
Air transportation, Aircraft, Aviation (AMOCs)
• Inspecting the bearing would safety, Incorporation by reference,
require 2 work-hours and no parts for a (1) The Manager, Safety Management
Safety. Section, Rotorcraft Standards Branch, FAA,
cost of $170 per helicopter and $10,880
The Proposed Amendment may approve AMOCs for this AD. Send your
for the U.S. fleet per inspection cycle.
proposal to: David Hatfield, Aviation Safety
• Replacing a –101 bearing would Accordingly, under the authority Engineer, Safety Management Section,
require 1 work-hour and $3,560 for parts delegated to me by the Administrator, Rotorcraft Standards Branch, FAA, 10101
for a cost of $3,645 per bearing. the FAA proposes to amend 14 CFR part Hillwood Pkwy, Fort Worth, TX 76177;
Replacing a –103 bearing would require 39 as follows: telephone (817) 222–5110; email
1 work-hour and $3,365 for parts for a david.hatfield@faa.gov.
cost of $3,450 per bearing. PART 39—AIRWORTHINESS (2) For operations conducted under a 14
DIRECTIVES CFR part 119 operating certificate or under
Authority for This Rulemaking 14 CFR part 91, subpart K, we suggest that
■ 1. The authority citation for part 39 you notify your principal inspector, or
Title 49 of the United States Code lacking a principal inspector, the manager of
specifies the FAA’s authority to issue continues to read as follows:
the local flight standards district office or
rules on aviation safety. Subtitle I, Authority: 49 U.S.C. 106(g), 40113, 44701. certificate holding district office before
section 106, describes the authority of operating any aircraft complying with this
§ 39.13 [Amended]
the FAA Administrator. ‘‘Subtitle VII: AD through an AMOC.
Aviation Programs,’’ describes in more ■ 2. The FAA amends § 39.13 by adding
the following new airworthiness (g) Additional Information
detail the scope of the Agency’s
directive (AD): The subject of this AD is addressed in
authority.
Transport Canada AD No. CF–2016–39, dated
We are issuing this rulemaking under Bell Helicopter Textron Canada Limited: December 12, 2016. You may view the
the authority described in ‘‘Subtitle VII, Docket No. FAA–2017–0433; Product
Transport Canada AD on the internet at
Part A, Subpart III, Section 44701: Identifier 2016–SW–078–AD.
http://www.regulations.gov in the AD Docket.
General requirements.’’ Under that (a) Applicability
(h) Subject
section, Congress charges the FAA with This AD applies to Bell Helicopter Textron
promoting safe flight of civil aircraft in Joint Aircraft Service Component (JASC)
Canada Limited Model 429 helicopters, serial
Code: 6200, Main Rotor System.
air commerce by prescribing regulations numbers 57001 and larger, with a main rotor
rmajette on DSKBCKNHB2PROD with PROPOSALS

for practices, methods, and procedures pitch link rod end bearing assembly (bearing) Issued in Fort Worth, Texas, on February
the Administrator finds necessary for part number (P/N) 429–010–433–101 or 429– 21, 2018.
safety in air commerce. This regulation 010–433–103 installed, certificated in any Scott A. Horn,
is within the scope of that authority category. Deputy Director for Regulatory Operations,
because it addresses an unsafe condition (b) Unsafe Condition Compliance & Airworthiness Division,
that is likely to exist or develop on Aircraft Certification Service.
This AD defines the unsafe condition as a
products identified in this rulemaking worn bearing. This condition could result in [FR Doc. 2018–04651 Filed 3–7–18; 8:45 am]
action. failure of a bearing, which could lead to BILLING CODE 4910–13–P

VerDate Sep<11>2014 14:51 Mar 07, 2018 Jkt 244001 PO 00000 Frm 00002 Fmt 4702 Sfmt 9990 E:\FR\FM\08MRP1.SGM 08MRP1

Document Created: 2018-03-08 01:47:50
Document Modified: 2018-03-08 01:47:50

Category		Regulatory Information
Collection		Federal Register
sudoc Class		AE 2.7: GS 4.107: AE 2.106:
Publisher		Office of the Federal Register, National Archives and Records Administration
Section		Proposed Rules
Action		Notice of proposed rulemaking (NPRM).
Dates		We must receive comments on this proposed AD by May 7, 2018.
Contact		David Hatfield, Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone (817) 222-5110; email [email protected]
FR Citation		83 FR 9818
RIN Number		2120-AA64
CFR Associated		Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

83 FR 9818 - Airworthiness Directives; Bell Helicopter Textron Canada Helicopters

DEPARTMENT OF TRANSPORTATIONFederal Aviation Administration

Federal Register Volume 83, Issue 46 (March 8, 2018)

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration