Airworthiness Directives; Hélicoptères Guimbal Helicopters, 49907-49909 [2021-19037]
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<![CDATA[
Federal Register / Vol. 86, No. 170 / Tuesday, September 7, 2021 / Rules and Regulations
Helicopter Engines Mandatory Service
49907
Bulletin (MSB) 319 73 2825, Version J, dated
March 15, 2019.
Table 1 to Paragraph (g)(l)
HMU Group/ Condition
Group 1 / 150 HMU operating hours or
more accumulated since new or since last
overhaul.
Group 1 / Less than 150 HMU operating
hours accumulated since new or since last
overhaul.
Within 500 HMU operating hours since
the last inspection or since first
installation of the HMU.
(2) Repeat the inspection required by
paragraph (g)(1) of this AD at intervals not to
exceed 500 HMU operating hours since the
previous inspection.
Note 1 to paragraph (g)(2): A noncumulative tolerance of 10% of HMU
operating hours (hrs) may be applied to the
timing of each repetitive inspection, with a
maximum allowable tolerance of +50 HMU
operating hrs. For example, counting from
the initial inspection, the repeat inspections
would occur at the following times, with the
tolerance noted in parentheses; 500 HMU
operating hrs (+50 hrs), 1000 HMU operating
hrs (+50 hrs), 1500 HMU operating hrs (+50
hrs).
(3) If a rejectable indication is found during
any inspection required by paragraphs (g)(1)
or (2) of this AD, replace the sleeve assembly
on the affected high-pressure pump drive
gear shaft or replace the affected HMU in
accordance with paragraph 2.4.2 or 4.4.2 of
the MSB.
(h) Definitions
(1) A Group 1 HMU is an HMU that was
first installed on or before January 31, 2013,
and that has not previously been inspected
in accordance with Safran Helicopter Engines
MSB 319 73 2825 Version G or later.
(2) A Group 2 HMU is an HMU that was
first installed after January 31, 2013, or a
HMU that has previously been inspected in
accordance with Safran Helicopter Engines
MSB 319 73 2825 Version G or later.
lotter on DSK11XQN23PROD with RULES1
(i) No Reporting Requirement
The reporting requirements specified in the
Accomplishment Instructions, paragraph
2.4.2, of the MSB are not required by this AD.
(j) Credit for Previous Actions
You may take credit for any initial
inspection or replacement of an HMU or the
sleeve assembly on the affected high-pressure
pump drive gear shaft required by paragraph
(g) of this AD if you performed the inspection
or replacement in accordance with Safran
Helicopter Engines MSB 319 73 2825,
Version G, dated January 24, 2013; Version
VerDate Sep<11>2014
16:47 Sep 03, 2021
Before exceeding 200 HMU operating
hours after the effective date of this AD.
Jkt 253001
H, dated September 1, 2014; or Version I,
dated April 26, 2016.
(k) 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 ECO Branch, send it to
the attention of the person identified in
Related Information. Information may be
emailed to: ANE-AD-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.
(l) Related Information
For more information about this AD,
contact Wego Wang, Aviation Safety
Engineer, ECO Branch, FAA, 1200 District
Avenue, Burlington, MA 01803; phone: (781)
238–7134; fax: fax: (781) 238–7199; email:
wego.wang@faa.gov.
(m) Material Incorporated by Reference
(1) The Director of the Federal Register
approved the incorporation by reference
(IBR) of the service information listed in this
paragraph under 5 U.S.C. 552(a) and 1 CFR
part 51.
(2) You must use this service information
as applicable to do the actions required by
this AD, unless the AD specifies otherwise.
(i) Safran Helicopter Engines Mandatory
Service Bulletin (MSB) No. 319 73 2825,
Version J, dated March 15, 2019.
Note 2 to paragraph (m)(2)(i): Per Safran
Helicopter Engines standing practice at the
time MSB 319 73 2825, Version J, was issued,
MSB 319 73 2825, Version J, is undated. The
issue date for MSB 319 73 2825, Version J,
appears on the Safran Helicopter Engines
Arrius 2 B1 Service Bulletin Index, No. X 319
L5 980 2, dated December 11, 2020.
PO 00000
Frm 00005
Fmt 4700
Sfmt 4700
(ii) [Reserved]
(3) For Safran Helicopter Engines service
information identified in this AD, contact
Safran Helicopter Engines, S.A., Avenue du
1er Mai, 40220 Tarnos, France; phone: +33
(0) 5 59 74 45 11.
(4) You may view this service information
at 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.
(5) You may view this service information
that is incorporated by reference at the
National Archives and Records
Administration (NARA). For information on
the availability of this material at NARA,
email: fr.inspection@nara.gov, or go to:
https://www.archives.gov/federal-register/cfr/
ibr-locations.html.
Issued on August 7, 2021.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives,
Compliance & Airworthiness Division,
Aircraft Certification Service.
[FR Doc. 2021–19226 Filed 9–3–21; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2021–0498; Project
Identifier 2019–SW–072–AD; Amendment
39–21722; AD 2021–19–04]
RIN 2120–AA64
Airworthiness Directives; He´licopte`res
Guimbal Helicopters
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
E:\FR\FM\07SER1.SGM
07SER1
ER07SE21.003</GPH>
Group 2
Compliance Time
Within 50 HMU operating hours after the
effective date of this AD.
49908
Federal Register / Vol. 86, No. 170 / Tuesday, September 7, 2021 / Rules and Regulations
The FAA is adopting a new
airworthiness directive (AD) for
He´licopte`res Guimbal Model Cabri G2
helicopters with any metal bushing
installed on the main rotor (M/R)
swashplate guide bellcrank. This AD
was prompted by a report of cracks
discovered on the M/R scissor link
during scheduled maintenance on
several helicopters. This AD requires
removing all metal bushings from
service, visually inspecting the lug bore
area and depending on the inspection
results, removing certain parts from
service and installing certain partnumbered plastic bushings. This AD
also prohibits installing any metal
bushing on any helicopter. The FAA is
issuing this AD to address the unsafe
condition on these products.
SUMMARY:
DATES:
This AD is effective October 12,
2021.
For service information
identified in this final rule, contact
He´licopte`res Guimbal, Basile Ginel,
1070, rue du Lieutenant Parayre,
Ae´rodrome d’Aix-en-Provence, 13290
Les Milles, France; telephone 33–04–
42–39–10–88; email basile.ginel@
guimbal.com; web https://
www.guimbal.com. You may view 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 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–2021–0498; or in person at Docket
Operations between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal
holidays. The AD docket contains this
final rule, the European Union Aviation
Safety Agency (EASA) AD, any
comments received, and other
information. The street address for
Docket Operations is U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue SE,
Washington, DC 20590.
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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:
VerDate Sep<11>2014
16:15 Sep 03, 2021
Jkt 253001
Background
The FAA issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would
apply to He´licopte`res Guimbal (HG)
Model Cabri G2 helicopters, certificated
in any category, with any metal
bushings installed on the main rotor
(M/R) swashplate guide bellcrank and
without plastic bushing part number
HG22–1001 or HG modification 16–009.
The NPRM published in the Federal
Register on July 9, 2021 (86 FR 36241).
In the NPRM, the FAA proposed to
require within 50 hours time-in-service
or 2 months, whichever occurs first after
the effective date of this AD,
disconnecting the bellcrank from the
swashplate guide, removing each bolt
and using a certain tool, removing
certain parts from service. The NPRM
also proposed to require visually
inspecting the lug bore area for
corrosion and cracks and depending on
the inspection results, removing certain
parts from service, or repairing the area
using an FAA-approved method,
installing certain part-numbered plastic
bushings, coating the area with a
compound, reinstalling certain parts,
applying a specified torque, and
installing cotter pins. The NPRM was
prompted by EASA AD 2019–0185,
dated July 30, 2019 (EASA AD 2019–
0185), issued by EASA, which is the
Technical Agent for the Member States
of the European Union, to correct an
unsafe condition for He´licopte`res
Guimbal Model Cabri G2 helicopters.
EASA advises that during scheduled
maintenance on several helicopters,
cracks were found on the M/R scissor
link due to corrosion. EASA states this
corrosion was caused by stress induced
by the mounting of the metal bushing
inside the lug hole. EASA further states
metal bushings are also installed on the
M/R swashplate guide bellcrank, where
similar cracking may occur. This
condition, if not addressed, could result
in failure of the M/R swashplate guide
bellcrank and reduced control of the
helicopter.
Accordingly, EASA AD 2019–0185
requires replacing any part-numbered
metal bushing with plastic bushing part
number (P/N) HG22–1001. EASA AD
2019–0185 also prohibits installing any
part-numbered metal bushing on the M/
R swashplate guide bellcrank other than
P/N HG22–1001 on any helicopter.
Discussion of Final Airworthiness
Directive
Comments
The FAA received no comments on
the NPRM or on the determination of
the costs.
PO 00000
Frm 00006
Fmt 4700
Sfmt 4700
Conclusion
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 reviewed
the relevant data and determined that
air safety requires adopting this AD as
proposed. Accordingly, the FAA is
issuing this AD to address the unsafe
condition on these products.
Related Service Information
The FAA reviewed Guimbal Service
Bulletin SB 17–003, Revision D, dated
August 27, 2019 (SB 17–003 Rev D).
This service information specifies
disconnecting the bellcrank installed on
the swashplate guide by removing the
bolts that connect the bellcrank to the
swashplate guide, removing any existing
bushings, and visually inspecting the
lug bore area for corrosion or cracks.
This service information also specifies if
there is any corrosion or cracks,
reporting the information to HG
support, installing the new plastic
bushings, reinstalling the bellcrank,
applying a specified torque, and
installing cotter pins.
Other Related Service Information
The FAA also reviewed Guimbal
Service Bulletin SB 17–003, Revision C,
dated July 12, 2019 (SB 17–003 Rev C).
SB 17–003 Rev C specifies the same
procedures as SB 17–003 Rev D, except
SB 17–003 Rev D updates the reference
to EASA AD 2019–0185.
Differences Between This AD and EASA
AD 2019–0185
EASA AD 2019–0185 applies to all
Model Cabri G2 helicopters, whereas
this AD only applies to Model Cabri G2
helicopters with any metal bushings
installed and without HG modification
16–009. The service information
required by the EASA AD requires
contacting He´licopte`res Guimbal for
corrective actions when corrosion or
cracks are found in the lug bore area
whereas this AD requires removing the
swashplate guide from service or
repairing it using an FAA-approved
method.
Costs of Compliance
The FAA estimates that this AD
affects 32 helicopters of U.S. Registry.
Labor rates are estimated at $85 per
work-hour. Based on these numbers, the
FAA estimates the following costs to
comply with this AD.
Disconnecting the bellcrank,
removing each metal bushing and
visually inspecting for corrosion and
E:\FR\FM\07SER1.SGM
07SER1
Federal Register / Vol. 86, No. 170 / Tuesday, September 7, 2021 / Rules and Regulations
cracks would take about 0.5 work-hours
for an estimated cost of $43 per
inspection cycle.
Installing each plastic bushing,
coating with compound, re-installing
the bellcrank, and applying torque
would take about 0.5 work-hours and
parts would cost about $10 for an
estimated cost of $53 per helicopter.
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 helicopters identified in this
rulemaking action.
Regulatory Findings
This AD will not have federalism
implications under Executive Order
13132. This AD will not have a
substantial direct effect on the States, on
the relationship between the national
government and the States, or on the
distribution of power and
responsibilities among the various
levels of government.
For the reasons discussed above, I
certify that this AD:
(1) Is not a ‘‘significant regulatory
action’’ under Executive Order 12866,
(2) Will not affect intrastate aviation
in Alaska, and
(3) Will not have a significant
economic impact, positive or negative,
on a substantial number of small entities
under the criteria of the Regulatory
Flexibility Act.
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List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
The Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA amends 14 CFR part 39 as
follows:
VerDate Sep<11>2014
16:15 Sep 03, 2021
Jkt 253001
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:
■
2021–19–04 He´licopte`res Guimbal:
Amendment 39–21722; Docket No.
FAA–2021–0498; Project Identifier
2019–SW–072–AD.
(a) Effective Date
This airworthiness directive (AD) is
effective October 12, 2021.
(b) Affected ADs
None.
(c) Applicability
This AD applies to He´licopte`res Guimbal
(HG) Model Cabri G2 helicopters, certificated
in any category, with any metal bushings
installed on the main rotor (M/R) swashplate
guide bellcrank and without plastic bushing
part number HG22–1001 or HG modification
16–009.
(d) Subject
Joint Aircraft Service Component (JASC)
Code: 6700, Rotorcraft Flight Control.
(e) Unsafe Condition
This AD was prompted by a report of
cracks on the M/R scissor link. The FAA is
issuing this AD to replace the metal bushings
installed on the M/R swashplate guide
bellcrank with plastic bushings. The unsafe
condition, if not addressed, could result in
failure of the M/R swashplate guide bellcrank
and 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 (TIS) or
2 months, whichever occurs first after the
effective date of this AD:
(i) Disconnect the bellcrank from the
swashplate guide by removing each bolt and,
ensuring that the bellcrank remains attached
to the flight control rod, remove each metal
bushing from service using a bushing
disassembly tool.
(ii) Visually inspect the lug bore area for
any corrosion and any cracks. If there is any
corrosion or any cracks, before further flight,
remove the swashplate guide from service or
repair it using an FAA-approved method. If
there is no corrosion and no cracks, install
plastic bushing part number HG22–1001,
coat plastic bushing with isolation
compound, re-install the bellcrank, torque
each bolt to 7.5 Nm–9 Nm (5.5 ft-lbs–6.6 ftlbs), and install cotter pins.
(2) As of the effective date of this AD, do
not install any metal bushing on any
helicopter.
PO 00000
Frm 00007
Fmt 4700
Sfmt 4700
49909
(h) 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 (i)(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.
(i) Related Information
(1) For more information about this AD,
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.
(2) The subject of this AD is addressed in
European Union Aviation Safety Agency
(EASA) AD 2019–0185, dated July 30, 2019.
You may view the EASA AD on the internet
at https://www.regulations.gov in Docket No.
FAA–2021–0498.
(j) Material Incorporated by Reference
None.
Issued on August 30, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021–19037 Filed 9–3–21; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2021–0497; Project
Identifier 2019–SW–043–AD; Amendment
39–21711; AD 2021–18–10]
RIN 2120–AA64
Airworthiness Directives; Bell Textron
Canada Limited Helicopters
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
The FAA is adopting a new
airworthiness directive (AD) for certain
Bell Textron Canada Limited Model 429
helicopters. This AD was prompted by
three reports of unexpected forces or
uncommanded inputs to the directional
(yaw) control system. This AD requires
revising the existing Rotorcraft Flight
SUMMARY:
E:\FR\FM\07SER1.SGM
07SER1
]]>Agencies
[Federal Register Volume 86, Number 170 (Tuesday, September 7, 2021)]
[Rules and Regulations]
[Pages 49907-49909]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-19037]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0498; Project Identifier 2019-SW-072-AD; Amendment
39-21722; AD 2021-19-04]
RIN 2120-AA64
Airworthiness Directives; H[eacute]licopt[egrave]res Guimbal
Helicopters
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
[[Page 49908]]
SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
H[eacute]licopt[egrave]res Guimbal Model Cabri G2 helicopters with any
metal bushing installed on the main rotor (M/R) swashplate guide
bellcrank. This AD was prompted by a report of cracks discovered on the
M/R scissor link during scheduled maintenance on several helicopters.
This AD requires removing all metal bushings from service, visually
inspecting the lug bore area and depending on the inspection results,
removing certain parts from service and installing certain part-
numbered plastic bushings. This AD also prohibits installing any metal
bushing on any helicopter. The FAA is issuing this AD to address the
unsafe condition on these products.
DATES: This AD is effective October 12, 2021.
ADDRESSES: For service information identified in this final rule,
contact H[eacute]licopt[egrave]res Guimbal, Basile Ginel, 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]; web https://www.guimbal.com. You may view 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 information on the availability of this material
at the FAA, call (817) 222-5110.
Examining the AD Docket
You may examine the AD docket at https://www.regulations.gov by
searching for and locating Docket No. FAA-2021-0498; or in person at
Docket Operations between 9 a.m. and 5 p.m., Monday through Friday,
except Federal holidays. The AD docket contains this final rule, the
European Union Aviation Safety Agency (EASA) AD, any comments received,
and other information. The street address for Docket Operations is U.S.
Department of Transportation, Docket Operations, M-30, West Building
Ground Floor, Room W12-140, 1200 New Jersey Avenue SE, Washington, DC
20590.
FOR FURTHER INFORMATION CONTACT: 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 [email protected].
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to
H[eacute]licopt[egrave]res Guimbal (HG) Model Cabri G2 helicopters,
certificated in any category, with any metal bushings installed on the
main rotor (M/R) swashplate guide bellcrank and without plastic bushing
part number HG22-1001 or HG modification 16-009. The NPRM published in
the Federal Register on July 9, 2021 (86 FR 36241). In the NPRM, the
FAA proposed to require within 50 hours time-in-service or 2 months,
whichever occurs first after the effective date of this AD,
disconnecting the bellcrank from the swashplate guide, removing each
bolt and using a certain tool, removing certain parts from service. The
NPRM also proposed to require visually inspecting the lug bore area for
corrosion and cracks and depending on the inspection results, removing
certain parts from service, or repairing the area using an FAA-approved
method, installing certain part-numbered plastic bushings, coating the
area with a compound, reinstalling certain parts, applying a specified
torque, and installing cotter pins. The NPRM was prompted by EASA AD
2019-0185, dated July 30, 2019 (EASA AD 2019-0185), issued by EASA,
which is the Technical Agent for the Member States of the European
Union, to correct an unsafe condition for H[eacute]licopt[egrave]res
Guimbal Model Cabri G2 helicopters. EASA advises that during scheduled
maintenance on several helicopters, cracks were found on the M/R
scissor link due to corrosion. EASA states this corrosion was caused by
stress induced by the mounting of the metal bushing inside the lug
hole. EASA further states metal bushings are also installed on the M/R
swashplate guide bellcrank, where similar cracking may occur. This
condition, if not addressed, could result in failure of the M/R
swashplate guide bellcrank and reduced control of the helicopter.
Accordingly, EASA AD 2019-0185 requires replacing any part-numbered
metal bushing with plastic bushing part number (P/N) HG22-1001. EASA AD
2019-0185 also prohibits installing any part-numbered metal bushing on
the M/R swashplate guide bellcrank other than P/N HG22-1001 on any
helicopter.
Discussion of Final Airworthiness Directive
Comments
The FAA received no comments on the NPRM or on the determination of
the costs.
Conclusion
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 reviewed the relevant
data and determined that air safety requires adopting this AD as
proposed. Accordingly, the FAA is issuing this AD to address the unsafe
condition on these products.
Related Service Information
The FAA reviewed Guimbal Service Bulletin SB 17-003, Revision D,
dated August 27, 2019 (SB 17-003 Rev D). This service information
specifies disconnecting the bellcrank installed on the swashplate guide
by removing the bolts that connect the bellcrank to the swashplate
guide, removing any existing bushings, and visually inspecting the lug
bore area for corrosion or cracks. This service information also
specifies if there is any corrosion or cracks, reporting the
information to HG support, installing the new plastic bushings,
reinstalling the bellcrank, applying a specified torque, and installing
cotter pins.
Other Related Service Information
The FAA also reviewed Guimbal Service Bulletin SB 17-003, Revision
C, dated July 12, 2019 (SB 17-003 Rev C). SB 17-003 Rev C specifies the
same procedures as SB 17-003 Rev D, except SB 17-003 Rev D updates the
reference to EASA AD 2019-0185.
Differences Between This AD and EASA AD 2019-0185
EASA AD 2019-0185 applies to all Model Cabri G2 helicopters,
whereas this AD only applies to Model Cabri G2 helicopters with any
metal bushings installed and without HG modification 16-009. The
service information required by the EASA AD requires contacting
H[eacute]licopt[egrave]res Guimbal for corrective actions when
corrosion or cracks are found in the lug bore area whereas this AD
requires removing the swashplate guide from service or repairing it
using an FAA-approved method.
Costs of Compliance
The FAA estimates that this AD affects 32 helicopters of U.S.
Registry. Labor rates are estimated at $85 per work-hour. Based on
these numbers, the FAA estimates the following costs to comply with
this AD.
Disconnecting the bellcrank, removing each metal bushing and
visually inspecting for corrosion and
[[Page 49909]]
cracks would take about 0.5 work-hours for an estimated cost of $43 per
inspection cycle.
Installing each plastic bushing, coating with compound, re-
installing the bellcrank, and applying torque would take about 0.5
work-hours and parts would cost about $10 for an estimated cost of $53
per helicopter.
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 helicopters identified in this rulemaking action.
Regulatory Findings
This AD will not have federalism implications under Executive Order
13132. This AD will not have a substantial direct effect on the States,
on the relationship between the national government and the States, or
on the distribution of power and responsibilities among the various
levels of government.
For the reasons discussed above, I certify that this AD:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Will not affect intrastate aviation in Alaska, and
(3) Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
The Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive:
2021-19-04 H[eacute]licopt[egrave]res Guimbal: Amendment 39-21722;
Docket No. FAA-2021-0498; Project Identifier 2019-SW-072-AD.
(a) Effective Date
This airworthiness directive (AD) is effective October 12, 2021.
(b) Affected ADs
None.
(c) Applicability
This AD applies to H[eacute]licopt[egrave]res Guimbal (HG) Model
Cabri G2 helicopters, certificated in any category, with any metal
bushings installed on the main rotor (M/R) swashplate guide
bellcrank and without plastic bushing part number HG22-1001 or HG
modification 16-009.
(d) Subject
Joint Aircraft Service Component (JASC) Code: 6700, Rotorcraft
Flight Control.
(e) Unsafe Condition
This AD was prompted by a report of cracks on the M/R scissor
link. The FAA is issuing this AD to replace the metal bushings
installed on the M/R swashplate guide bellcrank with plastic
bushings. The unsafe condition, if not addressed, could result in
failure of the M/R swashplate guide bellcrank and 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 (TIS) or 2 months, whichever
occurs first after the effective date of this AD:
(i) Disconnect the bellcrank from the swashplate guide by
removing each bolt and, ensuring that the bellcrank remains attached
to the flight control rod, remove each metal bushing from service
using a bushing disassembly tool.
(ii) Visually inspect the lug bore area for any corrosion and
any cracks. If there is any corrosion or any cracks, before further
flight, remove the swashplate guide from service or repair it using
an FAA-approved method. If there is no corrosion and no cracks,
install plastic bushing part number HG22-1001, coat plastic bushing
with isolation compound, re-install the bellcrank, torque each bolt
to 7.5 Nm-9 Nm (5.5 ft-lbs-6.6 ft-lbs), and install cotter pins.
(2) As of the effective date of this AD, do not install any
metal bushing on any helicopter.
(h) 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 (i)(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.
(i) Related Information
(1) For more information about this AD, 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 [email protected].
(2) The subject of this AD is addressed in European Union
Aviation Safety Agency (EASA) AD 2019-0185, dated July 30, 2019. You
may view the EASA AD on the internet at https://www.regulations.gov
in Docket No. FAA-2021-0498.
(j) Material Incorporated by Reference
None.
Issued on August 30, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-19037 Filed 9-3-21; 8:45 am]
BILLING CODE 4910-13-P
