Airworthiness Directives; Hélicoptères Guimbal Helicopters, 38943-38946 [2021-15475]
Download as PDF
<![CDATA[
Federal Register / Vol. 86, No. 139 / Friday, July 23, 2021 / Proposed Rules
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
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by:
a. Removing Airworthiness Directive
AD 2021–05–16, Amendment 39–21459
(86 FR 17287, April 2, 2021); and
■ b. Adding the following new
airworthiness directive:
■
■
Pratt & Whitney Division: Docket No. FAA–
2021–0577; Project Identifier AD–2021–
00470–E.
(a) Comments Due Date
The FAA must receive comments on this
airworthiness directive (AD) action by
September 7, 2021.
(b) Affected ADs
This AD replaces AD 2021–05–16,
Amendment 39–21459 (86 FR 17287, April 2,
2021).
(c) Applicability
This AD applies to Pratt & Whitney
Division (PW) PW4164, PW4164–1D,
PW4168, PW4168–1D, PW4168A, PW4168A–
1D, and PW4170 model turbofan engines
with low-pressure turbine (LPT) 4th-stage air
sealing ring segment assemblies, part number
(P/N) 50N463–01, P/N 50N526–01, or FAAapproved equivalent part numbers, installed.
khammond on DSKJM1Z7X2PROD with PROPOSALS
(d) Subject
Joint Aircraft System Component (JASC)
Code 7250, Turbine Section.
(e) Unsafe Condition
This AD was prompted by several reports
from the manufacturer concerning LPT 4thstage vane cluster assemblies leaning back
and notching into the rotating LPT 4th-stage
blades, causing some blades to fracture and
release. A manufacturer investigation into
those reports determined that the leaning
back of the LPT 4th-stage vane cluster
assemblies was caused by damage to the LPT
4th-stage air sealing ring segment assemblies.
The FAA is issuing this AD to prevent
damage to the LPT 4th-stage air sealing ring
segment assemblies, the LPT case, and the
LPT 4th-stage blades. The unsafe condition,
if not addressed, could result in uncontained
release of the LPT 4th-stage blades, damage
to the engine, and damage to the airplane.
VerDate Sep<11>2014
16:27 Jul 22, 2021
Jkt 253001
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Required Actions
(1) For affected engines that have either the
Talon IIA outer combustion chamber
assembly, P/N 51J100 or P/N 51J382, or the
Talon IIB outer combustion chamber
assembly, P/N 51J381 or P/N 51J500,
installed, at the next engine shop visit after
the effective date of this AD, remove from
service the LPT 4th-stage air sealing ring
segment assemblies, P/N 50N463–01, P/N
50N526–01, or FAA-approved equivalent
part numbers, and replace with parts eligible
for installation.
(2) For affected engines not referenced in
paragraph (g)(1) of this AD, at the next LPT
overhaul after the effective date of this AD,
remove from service the LPT 4th-stage air
sealing ring segment assemblies, P/N
50N463–01, P/N 50N526–01, or FAAapproved equivalent part numbers, and
replace with parts eligible for installation.
(3) For all affected engines, at each LPT
overhaul after compliance with the required
actions in paragraphs (g)(1) or (2) of this AD,
remove from service the LPT 4th-stage air
sealing ring segment assemblies, P/N
50N526–01 or FAA-approved equivalent part
numbers, and replace with parts eligible for
installation.
(4) During each replacement of the LPT
4th-stage air sealing ring segment assemblies
required by paragraphs (g)(1) through (3) of
this AD, perform a dimensional inspection of
the LPT case for bulging in accordance with
the Accomplishment Instructions, paragraph
2, of PW Alert Service Bulletin No. PW4G–
100–A72–262 Revision No. 1, dated
September 3, 2020 (the ASB).
(5) If, during the dimensional inspection of
the LPT case required by paragraph (g)(4) of
this AD, any LPT case found to be outside
the serviceable limits specified in Table 1:
Serviceable Limits and Repairs of the ASB,
repair or replace the LPT case before further
flight.
(h) Definitions
For the purpose of this AD:
(1) 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 H through P. The
separation of engine flanges solely for the
purpose of transportation without subsequent
engine maintenance does not constitute an
engine shop visit.
(2) An ‘‘LPT overhaul’’ is when the LPT
rotor is removed from the engine, all four
disks are removed from the LPT rotor, and all
blades are removed from the disks.
(3) ‘‘Parts eligible for installation’’ are LPT
4th-stage air sealing ring segment assemblies,
P/N 50N526–01, or FAA-approved equivalent
part numbers, with zero flight cycles since
new or with a P/N not mentioned in this AD.
(i) Credit for Previous Actions
You may take credit for the dimensional
inspection of the LPT case for bulging
required by paragraph (g)(4) of this AD if the
inspection was performed before the effective
PO 00000
Frm 00003
Fmt 4702
Sfmt 4702
38943
date of this AD using PW ASB No. PW4G–
100–A72–262 Original Issue, dated October
22, 2019.
(j) 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 Related Information.
Information may be emailed to: ANE-ADAMOC@faa.gov.
(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.
(k) Related Information
(1) For more information about this AD,
contact Carol Nguyen, Aviation Safety
Engineer, ECO Branch, FAA, 1200 District
Avenue, Burlington, MA 01803; phone: (781)
238–7655; fax: (781) 238–7199; email:
carol.nguyen@faa.gov.
(2) For service information identified in
this AD, contact Pratt & Whitney, 400 Main
Street, East Hartford, CT 06118; phone: (800)
565–0140; email: help24@prattwhitney.com;
website: https://prattwhitney.com. You may
view this referenced 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 (781) 238–7759.
Issued on July 16, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021–15518 Filed 7–22–21; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2021–0574; Project
Identifier 2019–SW–073–AD]
RIN 2120–AA64
Airworthiness Directives; He´licopte`res
Guimbal Helicopters
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
The FAA proposes to adopt a
new airworthiness directive (AD) for
certain He´licopte`res Guimbal Model
CABRI G2 helicopters. This proposed
AD was prompted by a report that,
SUMMARY:
E:\FR\FM\23JYP1.SGM
23JYP1
38944
Federal Register / Vol. 86, No. 139 / Friday, July 23, 2021 / Proposed Rules
khammond on DSKJM1Z7X2PROD with PROPOSALS
during scheduled maintenance on two
helicopters, cracks were found on a
certain main rotor (MR) non-rotating
scissor link. This proposed AD would
require replacing an affected MR nonrotating scissor link with a serviceable
part. The FAA is proposing this AD to
address the unsafe condition on these
products.
DATES: The FAA must receive comments
on this proposed AD by August 23,
2021.
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
https://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 He´licopte`res
Guimbal, 1070, rue du Lieutenant
Parayre, Ae´rodrome d’Aix-en-Provence,
13290 Les Milles, France; telephone
33–04–42–39–10–88; email support@
guimbal.com; or at https://
www.guimbal.com. You may view this
service information at the FAA, Office
of the Regional Counsel, Southwest
Region, 10101 Hillwood Pkwy., Room
6N–321, Fort Worth, TX 76177. For
information on the availability of this
material at the FAA, call (817) 222–
5110. Service information that is
incorporated by reference is also
available at https://www.regulations.gov
by searching for and locating Docket No.
FAA–2021–0574.
Examining the AD Docket
You may examine the AD docket at
https://www.regulations.gov by
searching for and locating Docket No.
FAA–2021–0574; 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
NPRM, the European Union Aviation
Safety Agency (EASA) AD, any
comments received, and other
information. The street address for
Docket Operations is listed above.
FOR FURTHER INFORMATION CONTACT:
Darren Gassetto, Aerospace Engineer,
COS Program Management Section,
Operational Safety Branch, Compliance
& Airworthiness Division, FAA, 1600
Stewart Ave., Suite 410, Westbury, NY
VerDate Sep<11>2014
16:27 Jul 22, 2021
Jkt 253001
11590; telephone (516) 228–7323; email
Darren.Gassetto@faa.gov.
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any
written data, views, or arguments about
this proposal. Send your comments to
an address listed under ADDRESSES.
Include ‘‘Docket No. FAA–2021–0574;
Project Identifier 2019–SW–073–AD’’ at
the beginning of your comments. The
most helpful comments reference a
specific portion of the proposal, explain
the reason for any recommended
change, and include supporting data.
The FAA will consider all comments
received by the closing date and may
amend this proposal because of those
comments.
Except for Confidential Business
Information (CBI) as described in the
following paragraph, and other
information as described in 14 CFR
11.35, the FAA will post all comments
received, without change, to https://
www.regulations.gov, including any
personal information you provide. The
agency will also post a report
summarizing each substantive verbal
contact received about this NPRM.
Confidential Business Information
CBI is commercial or financial
information that is both customarily and
actually treated as private by its owner.
Under the Freedom of Information Act
(FOIA) (5 U.S.C. 552), CBI is exempt
from public disclosure. If your
comments responsive to this NPRM
contain commercial or financial
information that is customarily treated
as private, that you actually treat as
private, and that is relevant or
responsive to this NPRM, it is important
that you clearly designate the submitted
comments as CBI. Please mark each
page of your submission containing CBI
as ‘‘PROPIN.’’ The FAA will treat such
marked submissions as confidential
under the FOIA, and they will not be
placed in the public docket of this AD.
Submissions containing CBI should be
sent to Darren Gassetto, Aerospace
Engineer, COS Program Management
Section, Operational Safety Branch,
Compliance & Airworthiness Division,
FAA, 1600 Stewart Ave., Suite 410,
Westbury, NY 11590; telephone (516)
228–7323; email Darren.Gassetto@
faa.gov. Any commentary that the FAA
receives which is not specifically
designated as CBI will be placed in the
public docket for this rulemaking.
Background
EASA, which is the Technical Agent
for the Member States of the European
Union, has issued EASA AD 2019–0186,
PO 00000
Frm 00004
Fmt 4702
Sfmt 4702
dated July 30, 2019 (EASA AD 2019–
0186), to correct an unsafe condition for
He´licopte`res Guimbal Model CABRI G2
helicopters, all manufacturer serial
numbers. EASA advises that, during
scheduled maintenance on two
helicopters, cracks were found on the
MR non-rotating scissor link, part
number (P/N) G41–10–200. The
suspected root cause for the cracking is
corrosion due to stress induced by the
mounting of the metal bushings inside
the lug hole. To address this issue the
manufacturer modified the design of the
MR non-rotating scissor link to reinforce
the lugs and replace the metal bushings
with plastic bushings. Cracking of a MR
non-rotating scissor link, if not
addressed, could result in failure of that
scissor link, resulting in reduced control
of the helicopter.
Accordingly, EASA AD 2019–0186
requires replacement of affected MR
non-rotating scissor links with
serviceable parts.
FAA’s Determination
These helicopters have been approved
by EASA and are approved for operation
in the United States. Pursuant to the
FAA’s bilateral agreement with the
European Union, EASA has notified the
FAA about the unsafe condition
described in its AD. The FAA is issuing
this AD after evaluating all known
relevant information and determining
that the unsafe condition described
previously is likely to exist or develop
on other helicopters of the same type
design.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Guimbal Service
Bulletin SB 15–015, Revision C, dated
August 27, 2019. This service
information specifies procedures for,
among other actions, modifying the
helicopter by replacing the MR nonrotating scissor link, P/N G41–10–200,
with a serviceable part, P/N G41–10–
201 (by installing scissor link assembly,
P/N G41–12–100, which includes MR
non-rotating scissor link, P/N G41–10–
201) and torqueing the bolts. 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
The FAA also reviewed Guimbal
Service Bulletin SB 15–015, Revision A,
dated July 20, 2015 (SB 15–015,
Revision A); and SB 15–015, Revision B,
dated July 12, 2019 (SB 15–015,
Revision B). SB 15–015, Revision A,
describes procedures for replacing a MR
E:\FR\FM\23JYP1.SGM
23JYP1
38945
Federal Register / Vol. 86, No. 139 / Friday, July 23, 2021 / Proposed Rules
non-rotating scissor link, P/N G41–10–
200, with P/N G41–12–100, which has
a new, improved design. Service
Bulletin SB 15–015, Revision B,
describes the same procedures as SB
15–015, Revision A, and includes a
revised compliance time, an updated
Situation section, and added an action.
Proposed AD Requirements in This
NPRM
This proposed AD would require
accomplishing the actions specified in
the service information already
described.
Costs of Compliance
The FAA estimates that this AD, if
adopted as proposed, would affect 32
helicopters of U.S. registry. The FAA
estimates the following costs to comply
with this proposed AD:
ESTIMATED COSTS FOR REQUIRED ACTIONS
Action
Labor cost
Replacement ...................................................
1 work-hour × $85 per hour = $85 .................
Authority for This Rulemaking
Title 49 of the United States Code
specifies the FAA’s authority to issue
rules on aviation safety. Subtitle I,
section 106, describes the authority of
the FAA Administrator. Subtitle VII:
Aviation Programs, describes in more
detail the scope of the Agency’s
authority.
The FAA is issuing this rulemaking
under the authority described in
Subtitle VII, Part A, Subpart III, Section
44701: General requirements. Under
that section, Congress charges the FAA
with promoting safe flight of civil
aircraft in air commerce by prescribing
regulations for practices, methods, and
procedures the Administrator finds
necessary for safety in air commerce.
This regulation is within the scope of
that authority because it addresses an
unsafe condition that is likely to exist or
develop on products identified in this
rulemaking action.
khammond on DSKJM1Z7X2PROD with PROPOSALS
Regulatory Findings
This FAA 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
that this proposed regulation:
(1) Is not a ‘‘significant regulatory
action’’ under Executive Order 12866,
and
(2) Would not affect intrastate
aviation in Alaska.
(3) Would not have a significant
economic impact, positive or negative,
on a substantial number of small entities
under the criteria of the Regulatory
Flexibility Act.
VerDate Sep<11>2014
16:27 Jul 22, 2021
Jkt 253001
Parts cost
Cost per
product
$323
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
(f) Compliance
The Proposed Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA proposes to amend 14 CFR part
39 as follows:
(g) Required Actions
PART 39—AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive:
■
He´licopte`res Guimbal: Docket No. FAA–
2021–0574; Project Identifier 2019–SW–
073–AD.
(a) Comments Due Date
The FAA must receive comments on this
airworthiness directive (AD) by August 23,
2021.
(c) Applicability
This AD applies to He´licopte`res Guimbal
Model CABRI G2 helicopters, certificated in
any category, with main rotor (MR) nonrotating scissor links, part number (P/N)
G41–10–200 installed.
(d) Subject
Joint Aircraft Service Component (JASC)
Code: 6700, Rotorcraft Flight Control.
(e) Unsafe Condition
This AD was prompted by a report that
during scheduled maintenance on two
helicopters, cracks were found on the MR
non-rotating scissor link with part number
(P/N) G41–10–200. The FAA is issuing this
AD to address cracking of a MR non-rotating
scissor link. Cracking of a MR non-rotating
scissor link, if not addressed, could result in
failure of that scissor link, resulting in
reduced control of the helicopter.
Frm 00005
Fmt 4702
$13,056
Comply with this AD within the
compliance times specified, unless already
done.
(1) Within 50 hours time-in-service or 2
months after the effective date of this AD,
whichever occurs first, modify the helicopter
by replacing the MR non-rotating scissor link,
P/N G41–10–200, with a serviceable scissor
link assembly, P/N G41–12–100, in
accordance with the Required Actions, IPC
4.1–2 (a) through (d) inclusive, of Guimbal
Service Bulletin SB 15–015, Revision C,
dated August 27, 2019.
(2) As of the effective date of this AD, do
not install a MR non-rotating scissor link, P/
N G41–10–200, on any helicopter.
(h) Credit for Previous Actions
This paragraph provides credit for actions
required by paragraph (g)(1) of this AD, if
those actions were performed before the
effective date of this AD using the service
information specified in paragraph (h)(1) or
(2) of this AD.
(1) Guimbal Service Bulletin SB 15–015,
Revision A, dated July 20, 2015.
(2) Guimbal Service Bulletin SB 15–015,
Revision B, dated July 12, 2019.
(i) Special Flight Permits
(b) Affected ADs
None.
PO 00000
$408
Cost on U.S.
operators
Sfmt 4702
Special flight permits, as described in 14
CFR 21.197 and 21.199, are prohibited.
(j) Alternative Methods of Compliance
(AMOCs)
(1) The Manager, International Validation
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 International Validation
Branch, send it to the attention of the person
identified in paragraph (k)(1) of this AD.
Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov.
(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.
E:\FR\FM\23JYP1.SGM
23JYP1
38946
Federal Register / Vol. 86, No. 139 / Friday, July 23, 2021 / Proposed Rules
(k) Related Information
(1) For more information about this AD,
contact Darren Gassetto, Aerospace Engineer,
COS Program Management Section,
Operational Safety Branch, Compliance &
Airworthiness Division, FAA, 1600 Stewart
Ave., Suite 410, Westbury, NY 11590;
telephone (516) 228–7323; email
Darren.Gassetto@faa.gov.
(2) For service information identified in
this AD, contact He´licopte`res Guimbal, 1070,
rue du Lieutenant Parayre, Ae´rodrome d’Aixen-Provence, 13290 Les Milles, France;
telephone 33–04–42–39–10–88; email
support@guimbal.com; or at https://
www.guimbal.com. You may view this
referenced service information at the FAA,
Office of the Regional Counsel, Southwest
Region, 10101 Hillwood Pkwy., Room 6N–
321, Fort Worth, TX 76177. For information
on the availability of this material at the
FAA, call (817) 222–5110.
(3) The subject of this AD is addressed in
European Union Aviation Safety Agency
(EASA) AD 2019–0186, dated July 30, 2019.
You may view the EASA AD at https://
www.regulations.gov in Docket No. FAA–
2021–0574.
Issued on July 14, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021–15475 Filed 7–22–21; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2021–0575; Project
Identifier MCAI–2020–00545–R]
RIN 2120–AA64
Airworthiness Directives; Bell Textron
Canada Limited (Type Certificate
Previously Held by Bell Helicopter
Textron Canada Limited) Helicopters
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
The FAA proposes to adopt a
new airworthiness directive (AD) for
certain Bell Textron Canada Limited
(type certificate previously held by Bell
Helicopter Textron Canada Limited)
(Bell) Model 429 helicopters. This
proposed AD was prompted by reports
of incorrectly staked spherical bearings
in the directional control bellcrank
assembly. This proposed AD would
require a one-time inspection of the
lower surface of the spherical bearing in
the directional control bellcrank
assembly to determine if it is properly
staked and, depending on the findings,
applicable corrective actions. For
khammond on DSKJM1Z7X2PROD with PROPOSALS
SUMMARY:
VerDate Sep<11>2014
16:27 Jul 22, 2021
Jkt 253001
certain helicopters, this proposed AD
would also require repetitive
inspections and, depending on the
findings, applicable corrective actions.
This proposed AD would also provide a
terminating action for the repetitive
inspections. The FAA is proposing this
AD to address the unsafe condition on
these products.
The FAA must receive comments
on this proposed AD September 7, 2021.
DATES:
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
https://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 between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal
holidays.
For service information identified in
this NPRM, contact Bell Textron Canada
Limited, 12,800 Rue de l’Avenir,
Mirabel, Quebec J7J 1R4, Canada;
telephone 1–450–437–2862 or 1–800–
363–8023; fax 1–450–433–0272; email
productsupport@bellflight.com; or at
https://www.bellflight.com/support/
contact-support. You may view this
service information at the FAA, Office
of the Regional Counsel, Southwest
Region, 10101 Hillwood Pkwy., Room
6N–321, Fort Worth, TX 76177. For
information on the availability of this
material at the FAA, call (817) 222–
5110.
ADDRESSES:
Examining the AD Docket
You may examine the AD docket at
https://www.regulations.gov by
searching for and locating Docket No.
FAA–2021–0575; 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
NPRM, the Transport Canada AD, any
comments received, and other
information. The street address for
Docket Operations is listed above.
FOR FURTHER INFORMATION CONTACT:
Andrea Jimenez, Aerospace Engineer,
COS Program Management Section,
Operational Safety Branch, Compliance
& Airworthiness Division, FAA, 1600
Stewart Ave., Suite 410, Westbury, NY
11590; telephone (516) 228–7330; email
andrea.jimenez@faa.gov.
SUPPLEMENTARY INFORMATION:
PO 00000
Frm 00006
Fmt 4702
Sfmt 4702
Comments Invited
The FAA invites you to send any
written relevant data, views, or
arguments about this proposal. Send
your comments to an address listed
under ADDRESSES. Include ‘‘Docket No.
FAA–2021–0575; Project Identifier
MCAI–2020–00545–R’’ at the beginning
of your comments. The most helpful
comments reference a specific portion of
the proposal, explain the reason for any
recommended change, and include
supporting data. The FAA will consider
all comments received by the closing
date and may amend this proposal
because of those comments.
Except for Confidential Business
Information (CBI) as described in the
following paragraph, and other
information as described in 14 CFR
11.35, the FAA will post all comments
received, without change, to https://
www.regulations.gov, including any
personal information you provide. The
agency will also post a report
summarizing each substantive verbal
contact received about this NPRM.
Confidential Business Information
CBI is commercial or financial
information that is both customarily and
actually treated as private by its owner.
Under the Freedom of Information Act
(FOIA) (5 U.S.C. 552), CBI is exempt
from public disclosure. If your
comments responsive to this NPRM
contain commercial or financial
information that is customarily treated
as private, that you actually treat as
private, and that is relevant or
responsive to this NPRM, it is important
that you clearly designate the submitted
comments as CBI. Please mark each
page of your submission containing CBI
as ‘‘PROPIN.’’ The FAA will treat such
marked submissions as confidential
under the FOIA, and they will not be
placed in the public docket of this
NPRM. Submissions containing CBI
should be sent to Andrea Jimenez,
Aerospace Engineer, COS Program
Management Section, Operational
Safety Branch, Compliance &
Airworthiness Division, FAA, 1600
Stewart Ave., Suite 410, Westbury, NY
11590; telephone (516) 228–7330; email
andrea.jimenez@faa.gov. Any
commentary that the FAA receives
which is not specifically designated as
CBI will be placed in the public docket
for this rulemaking.
Background
Transport Canada, which is the
aviation authority for Canada, has
issued Canadian AD CF–2020–11, dated
April 16, 2020 (Transport Canada AD
CF–2020–11), to correct an unsafe
E:\FR\FM\23JYP1.SGM
23JYP1
]]>Agencies
[Federal Register Volume 86, Number 139 (Friday, July 23, 2021)]
[Proposed Rules]
[Pages 38943-38946]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-15475]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0574; Project Identifier 2019-SW-073-AD]
RIN 2120-AA64
Airworthiness Directives; H[eacute]licopt[egrave]res Guimbal
Helicopters
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for certain H[eacute]licopt[egrave]res Guimbal Model CABRI G2
helicopters. This proposed AD was prompted by a report that,
[[Page 38944]]
during scheduled maintenance on two helicopters, cracks were found on a
certain main rotor (MR) non-rotating scissor link. This proposed AD
would require replacing an affected MR non-rotating scissor link with a
serviceable part. The FAA is proposing this AD to address the unsafe
condition on these products.
DATES: The FAA must receive comments on this proposed AD by August 23,
2021.
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 https://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
H[eacute]licopt[egrave]res Guimbal, 1070, rue du Lieutenant Parayre,
A[eacute]rodrome d'Aix-en-Provence, 13290 Les Milles, France; telephone
33-04-42-39-10-88; email [email protected]; or at https://www.guimbal.com. You may view this service information at the FAA,
Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy.,
Room 6N-321, Fort Worth, TX 76177. For information on the availability
of this material at the FAA, call (817) 222-5110. Service information
that is incorporated by reference is also available at https://www.regulations.gov by searching for and locating Docket No. FAA-2021-
0574.
Examining the AD Docket
You may examine the AD docket at https://www.regulations.gov by
searching for and locating Docket No. FAA-2021-0574; 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 NPRM, the European
Union Aviation Safety Agency (EASA) AD, any comments received, and
other information. The street address for Docket Operations is listed
above.
FOR FURTHER INFORMATION CONTACT: Darren Gassetto, Aerospace Engineer,
COS Program Management Section, Operational Safety Branch, Compliance &
Airworthiness Division, FAA, 1600 Stewart Ave., Suite 410, Westbury, NY
11590; telephone (516) 228-7323; email [email protected].
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any written data, views, or arguments
about this proposal. Send your comments to an address listed under
ADDRESSES. Include ``Docket No. FAA-2021-0574; Project Identifier 2019-
SW-073-AD'' at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, explain the
reason for any recommended change, and include supporting data. The FAA
will consider all comments received by the closing date and may amend
this proposal because of those comments.
Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
https://www.regulations.gov, including any personal information you
provide. The agency will also post a report summarizing each
substantive verbal contact received about this NPRM.
Confidential Business Information
CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this NPRM contain commercial
or financial information that is customarily treated as private, that
you actually treat as private, and that is relevant or responsive to
this NPRM, it is important that you clearly designate the submitted
comments as CBI. Please mark each page of your submission containing
CBI as ``PROPIN.'' The FAA will treat such marked submissions as
confidential under the FOIA, and they will not be placed in the public
docket of this AD. Submissions containing CBI should be sent to Darren
Gassetto, Aerospace Engineer, COS Program Management Section,
Operational Safety Branch, Compliance & Airworthiness Division, FAA,
1600 Stewart Ave., Suite 410, Westbury, NY 11590; telephone (516) 228-
7323; email [email protected]. Any commentary that the FAA
receives which is not specifically designated as CBI will be placed in
the public docket for this rulemaking.
Background
EASA, which is the Technical Agent for the Member States of the
European Union, has issued EASA AD 2019-0186, dated July 30, 2019 (EASA
AD 2019-0186), to correct an unsafe condition for
H[eacute]licopt[egrave]res Guimbal Model CABRI G2 helicopters, all
manufacturer serial numbers. EASA advises that, during scheduled
maintenance on two helicopters, cracks were found on the MR non-
rotating scissor link, part number (P/N) G41-10-200. The suspected root
cause for the cracking is corrosion due to stress induced by the
mounting of the metal bushings inside the lug hole. To address this
issue the manufacturer modified the design of the MR non-rotating
scissor link to reinforce the lugs and replace the metal bushings with
plastic bushings. Cracking of a MR non-rotating scissor link, if not
addressed, could result in failure of that scissor link, resulting in
reduced control of the helicopter.
Accordingly, EASA AD 2019-0186 requires replacement of affected MR
non-rotating scissor links with serviceable parts.
FAA's Determination
These helicopters have been approved by EASA and are approved for
operation in the United States. Pursuant to the FAA's bilateral
agreement with the European Union, EASA has notified the FAA about the
unsafe condition described in its AD. The FAA is issuing this AD after
evaluating all known relevant information and determining that the
unsafe condition described previously is likely to exist or develop on
other helicopters of the same type design.
Related Service Information Under 1 CFR Part 51
The FAA reviewed Guimbal Service Bulletin SB 15-015, Revision C,
dated August 27, 2019. This service information specifies procedures
for, among other actions, modifying the helicopter by replacing the MR
non-rotating scissor link, P/N G41-10-200, with a serviceable part, P/N
G41-10-201 (by installing scissor link assembly, P/N G41-12-100, which
includes MR non-rotating scissor link, P/N G41-10-201) and torqueing
the bolts. 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
The FAA also reviewed Guimbal Service Bulletin SB 15-015, Revision
A, dated July 20, 2015 (SB 15-015, Revision A); and SB 15-015, Revision
B, dated July 12, 2019 (SB 15-015, Revision B). SB 15-015, Revision A,
describes procedures for replacing a MR
[[Page 38945]]
non-rotating scissor link, P/N G41-10-200, with P/N G41-12-100, which
has a new, improved design. Service Bulletin SB 15-015, Revision B,
describes the same procedures as SB 15-015, Revision A, and includes a
revised compliance time, an updated Situation section, and added an
action.
Proposed AD Requirements in This NPRM
This proposed AD would require accomplishing the actions specified
in the service information already described.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 32 helicopters of U.S. registry. The FAA estimates the following
costs to comply with this proposed AD:
Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
Replacement........................... 1 work-hour x $85 per $323 $408 $13,056
hour = $85.
----------------------------------------------------------------------------------------------------------------
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 FAA 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 that this proposed regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866, and
(2) Would not affect intrastate aviation in Alaska.
(3) Would 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 adding the following new airworthiness
directive:
H[eacute]licopt[egrave]res Guimbal: Docket No. FAA-2021-0574;
Project Identifier 2019-SW-073-AD.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by August 23, 2021.
(b) Affected ADs
None.
(c) Applicability
This AD applies to H[eacute]licopt[egrave]res Guimbal Model
CABRI G2 helicopters, certificated in any category, with main rotor
(MR) non-rotating scissor links, part number (P/N) G41-10-200
installed.
(d) Subject
Joint Aircraft Service Component (JASC) Code: 6700, Rotorcraft
Flight Control.
(e) Unsafe Condition
This AD was prompted by a report that during scheduled
maintenance on two helicopters, cracks were found on the MR non-
rotating scissor link with part number (P/N) G41-10-200. The FAA is
issuing this AD to address cracking of a MR non-rotating scissor
link. Cracking of a MR non-rotating scissor link, if not addressed,
could result in failure of that scissor link, resulting in reduced
control of the helicopter.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
(1) Within 50 hours time-in-service or 2 months after the
effective date of this AD, whichever occurs first, modify the
helicopter by replacing the MR non-rotating scissor link, P/N G41-
10-200, with a serviceable scissor link assembly, P/N G41-12-100, in
accordance with the Required Actions, IPC 4.1-2 (a) through (d)
inclusive, of Guimbal Service Bulletin SB 15-015, Revision C, dated
August 27, 2019.
(2) As of the effective date of this AD, do not install a MR
non-rotating scissor link, P/N G41-10-200, on any helicopter.
(h) Credit for Previous Actions
This paragraph provides credit for actions required by paragraph
(g)(1) of this AD, if those actions were performed before the
effective date of this AD using the service information specified in
paragraph (h)(1) or (2) of this AD.
(1) Guimbal Service Bulletin SB 15-015, Revision A, dated July
20, 2015.
(2) Guimbal Service Bulletin SB 15-015, Revision B, dated July
12, 2019.
(i) Special Flight Permits
Special flight permits, as described in 14 CFR 21.197 and
21.199, are prohibited.
(j) Alternative Methods of Compliance (AMOCs)
(1) The Manager, International Validation 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 International Validation Branch, send
it to the attention of the person identified in paragraph (k)(1) of
this AD. Information may be emailed 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.
[[Page 38946]]
(k) Related Information
(1) For more information about this AD, contact Darren Gassetto,
Aerospace Engineer, COS Program Management Section, Operational
Safety Branch, Compliance & Airworthiness Division, FAA, 1600
Stewart Ave., Suite 410, Westbury, NY 11590; telephone (516) 228-
7323; email [email protected].
(2) For service information identified in this AD, contact
H[eacute]licopt[egrave]res Guimbal, 1070, rue du Lieutenant Parayre,
A[eacute]rodrome d'Aix-en-Provence, 13290 Les Milles, France;
telephone 33-04-42-39-10-88; email [email protected]; or at
https://www.guimbal.com. You may view this referenced service
information at the FAA, Office of the Regional Counsel, Southwest
Region, 10101 Hillwood Pkwy., Room 6N-321, Fort Worth, TX 76177. For
information on the availability of this material at the FAA, call
(817) 222-5110.
(3) The subject of this AD is addressed in European Union
Aviation Safety Agency (EASA) AD 2019-0186, dated July 30, 2019. You
may view the EASA AD at https://www.regulations.gov in Docket No.
FAA-2021-0574.
Issued on July 14, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-15475 Filed 7-22-21; 8:45 am]
BILLING CODE 4910-13-P
