Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters, 8771-8773 [2020-03072]
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Federal Register / Vol. 85, No. 32 / Tuesday, February 18, 2020 / Proposed Rules
(3) For service information identified in
this AD, contact Bombardier, Inc., 400 CoˆteVertu Road West, Dorval, Que´bec H4S 1Y9,
Canada; Widebody Customer Response
Center North America toll-free telephone 1–
866–538–1247 or direct-dial telephone 1–
514–855–2999; fax 514–855–7401; email
ac.yul@aero.bombardier.com; internet https://
www.bombardier.com. You may view this
service information at the FAA, Transport
Standards Branch, 2200 South 216th St., Des
Moines, WA. For information on the
availability of this material at the FAA, call
206–231–3195.
DEPARTMENT OF TRANSPORTATION
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 your local Sikorsky
Field Representative or Sikorsky’s
Service Engineering Group at Sikorsky
Aircraft Corporation, 124 Quarry Road,
Trumbull, CT 06611; telephone 1–800–
Winged–S; email wcs_cust_service_
eng.gr-sik@lmco.com. Operators may
also log on to the Sikorsky 360 website
at https://www.sikorsky360.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.
Federal Aviation Administration
Examining the AD Docket
Issued on February 11, 2020.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives,
Compliance & Airworthiness Division,
Aircraft Certification Service.
[FR Doc. 2020–03042 Filed 2–14–20; 8:45 am]
BILLING CODE 4910–13–P
14 CFR Part 39
[Docket No. FAA–2019–1115; Product
Identifier 2018–SW–065–AD]
RIN 2120–AA64
Airworthiness Directives; Sikorsky
Aircraft Corporation 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 Sikorsky Aircraft Corporation
(Sikorsky) Model S–92A helicopters.
This proposed AD was prompted by two
incidents of erroneous low oil pressure
caution cockpit indications and
unintended actuation of the main
gearbox (MGB) auto bypass valve. This
proposed AD would require installing
auxiliary circuit breaker modification
(MOD) kits and inserting a Rotorcraft
Flight Manual (RFM) Supplement into
the RFM for your helicopter. 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 April 3, 2020.
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
lotter on DSKBCFDHB2PROD with PROPOSALS
SUMMARY:
VerDate Sep<11>2014
17:13 Feb 14, 2020
Jkt 250001
You may examine the AD docket on
the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2019–
1115; 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
regulatory evaluation, any comments
received, and other information. The
street address for Docket Operations is
listed above. Comments will be
available in the AD docket shortly after
receipt.
FOR FURTHER INFORMATION CONTACT:
Michael Schwetz, Aviation Safety
Engineer, Boston ACO Branch,
Compliance & Airworthiness Division,
FAA, 1200 District Avenue, Burlington,
MA 01803; telephone 781–238–7761;
email michael.schwetz@faa.gov.
SUPPLEMENTARY INFORMATION:
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 the ADDRESSES section. Include
‘‘Docket No. FAA–2019–1115; Product
Identifier 2018–SW–065–AD’’ at the
beginning of your comments. The FAA
specifically invites comments on the
overall regulatory, economic,
environmental, and energy aspects of
this NPRM. The FAA will consider all
comments received by the closing date
and may amend this NPRM because of
those comments.
The FAA will post all comments
received, without change, to https://
www.regulations.gov, including any
personal information you provide. The
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8771
FAA will also post a report
summarizing each substantive verbal
contact received about this NPRM.
Discussion
The FAA proposes to adopt a new AD
for Sikorsky Model S–92A helicopters.
This proposed AD is prompted by two
incidents of erroneous low oil pressure
caution cockpit indications and
unintended actuation of the MGB auto
bypass valve caused by unintended
popping of the M XMSN OIL WARN
circuit breaker during flight. The root
cause of this circuit breaker popping is
unknown. When this circuit breaker
trips, the following cautions will
display ‘‘MGB PUMP 1 FAIL, MGB
PUMP 2 FAIL, MGB OIL HOT, MGB
MAN COOL, MGB OIL PRES.’’ With the
MGB auto bypass valve actuated, the
MGB BYPASS caution will not
annunciate. For the given conditions,
the appropriate action for the crew is
‘‘land as soon as possible’’ in
accordance with the RFM Emergency
Procedures. The erroneous indications
conflicting with correct gauge readings
may overwhelm the flight crew,
resulting in a forced landing of the
helicopter.
To address this unsafe condition,
Sikorsky developed MOD kits based on
helicopter serial number (S/N) to
introduce a separate circuit breaker for
the MGB last jet pressure switch. These
MOD kits specify reworking the
overhead panel to install new clips and
brackets, circuit breaker wiring
harnesses, wiring MODs, the auxiliary
circuit breaker panel, and the M XMSN
PRESS SWITCH circuit breaker.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Sikorsky Special
Service Instructions No. 92–121, dated
October 26, 2017 (SSI 92–121). This
service information describes
procedures for installing an auxiliary
circuit breaker panel MOD kit and M
XMSN PRESS SWITCH circuit breaker
MOD kit based on helicopter S/N.
The FAA also reviewed RFM
Supplement No. 45, Revision No. 2,
Sikorsky Model S–92A, Part 1, dated
April 27, 2017 (S–92A RFMS 45, Part 1,
Revision 2). This service information
specifies operating limitations, preflight
checks, normal and emergency
procedures, and malfunction
information for helicopters with
Avionics Management System version
7.1 or 8.0 with the MGB OIL OUT
warning activated, pump failure
indicating system, MGB auto bypass,
and M XMSN PRESS SWITCH circuit
breaker installed.
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Federal Register / Vol. 85, No. 32 / Tuesday, February 18, 2020 / Proposed Rules
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 reviewed Sikorsky S–92
Helicopter Alert Service Bulletin 92–
63–037, Revision A, dated March 1,
2018. This service information contains
planning information pertaining to the
auxiliary circuit breaker panel and M
XMSN PRESS SWITCH circuit breaker
MOD kits, accomplishing SSI 92–121,
and inserting S–92A RFMS 45, Part 1,
Revision 2 into the helicopter cockpit.
FAA’s Determination
The FAA is proposing this AD after
evaluating all the relevant information
and determining that the unsafe
condition described previously is likely
to exist or develop in other products of
the same type design.
Proposed AD Requirements
This proposed AD would require,
within 400 hours time-in-service:
• For helicopters S/N 920006 through
920296 inclusive, installing an auxiliary
circuit breaker panel and M XMSN
PRESS SWITCH circuit breaker by
installing MOD Kit Clips and Brackets
part number (P/N) 92070–20115–015,
MOD Kit Left Hand (LH) Cockpit
Auxiliary Power Unit P/N 92070–
55096–012, MOD Kit LH Cabin
Auxiliary Power Unit P/N 92070–
55096–013, MOD Kit LH Top Deck FLD
P/N 92070–55096–016, MOD Kit MGB
XMSN P/N 92070–55096–017, MOD Kit
Auxiliary Circuit Break Panel P/N
92070–55075–011, and MOD Kit
Auxiliary Cabin Panel Faceplate P/N
92070–55075–012.
• For helicopters S/N 920297 through
920304 inclusive and S/N 920311
through 920314 inclusive, modifying
the auxiliary circuit breaker panel and
transmission harness and installing
MOD Kit Auxiliary Cabin Panel
Faceplate P/N 92070–55075–012.
• Inserting a copy of S–92A RFMS 45,
Part 1, Revision 2 into the RFM for your
helicopter.
lotter on DSKBCFDHB2PROD with PROPOSALS
Costs of Compliance
The FAA estimates that this proposed
AD affects 36 helicopters of U.S.
registry. The FAA estimate the
following costs to comply with this
proposed AD. Labor costs are estimated
at $85 per work-hour.
Modifying helicopters S/N 920006
through 920296 inclusive would take
about 48 work-hours and parts would
cost about $1,618 for an estimated cost
VerDate Sep<11>2014
17:13 Feb 14, 2020
Jkt 250001
of $5,698 per helicopter and $182,336
for the U.S. fleet size of 32 helicopters.
Modifying helicopters S/N 920297
through 920304 inclusive and S/N
920311 through 920314 inclusive would
take about 2 work-hours and parts
would cost about $65 for an estimated
cost of $235 per helicopter and $940 for
the U.S. fleet size of 4 helicopters.
Revising the RFM would take about
0.5 work-hour for an estimated cost of
$43 per helicopter and $1,548 for the
U.S. fleet.
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
The 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 above, I
certify this proposed regulation:
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.
The FAA prepared an economic
evaluation of the estimated costs to
comply with this proposed AD and
placed it in the AD docket.
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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 adding
the following new airworthiness
directive (AD):
■
Sikorsky Aircraft Corporation: Docket No.
FAA–2019–1115; Product Identifier
2018–SW–065–AD.
(a) Comments Due Date
The FAA must receive comments by April
3, 2020.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Sikorsky Aircraft
Corporation Model S–92A helicopters, serial
number (S/N) 920006 through 920304
inclusive and S/N 920311 through 920314
inclusive, certificated in any category.
(d) Subject
Joint Aircraft System Component (JASC)
Code: 6340, Rotor Drive Indicating System.
(e) Unsafe Condition
This AD was prompted by two incidents of
erroneous low oil pressure caution cockpit
indications and unintended actuation of the
main gearbox (MGB) auto bypass valve. The
FAA is issuing this AD to prevent the M
XMSM OIL WARN circuit breaker from
presenting erroneous cautions when tripped.
The unsafe condition, if not addressed, could
result in erroneous low oil pressure caution
cockpit indication, unintended actuation of
the MGB auto bypass valve, increased oil
temperature, conflicting indications, and
forced landing of the helicopter.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Required Actions
Within 400 hours time-in-service:
(1) For helicopters S/N 920006 through
920296 inclusive:
(i) Install Modification (MOD) Kit Clips
and Brackets part number (P/N) 92070–
20115–015 by following the Instructions,
paragraph B. of Sikorsky Special Service
Instructions No. 92–121, dated October 26,
2017 (SSI 92–121).
E:\FR\FM\18FEP1.SGM
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Federal Register / Vol. 85, No. 32 / Tuesday, February 18, 2020 / Proposed Rules
(ii) Install the first portion of MOD Kit
Auxiliary Circuit Breaker Panel P/N 92070–
55075–011 by following the Instructions,
paragraph C. of Sikorsky SSI 92–121.
(iii) Install MOD Kit Left Hand (LH)
Cockpit Auxiliary Power Unit P/N 92070–
55096–012 by following the Instructions,
paragraph D. of Sikorsky SSI 92–121.
(iv) Install MOD Kit LH Cabin Auxiliary
Power Unit P/N 92070–55096–013 by
following the Instructions, paragraph E. of
Sikorsky SSI 92–121.
(v) Install MOD Kit LH Top Deck FLD P/
N 92070–55096–016 by following the
Instructions, paragraph F. of Sikorsky SSI
92–121.
(vi) Install MOD Kit MGB XMSN P/N
92070–55096–017 by following the
Instructions, paragraph G. of Sikorsky SSI
92–121.
(vii) Install the completion portion of MOD
Kit Auxiliary Circuit Break Panel P/N 92070–
55075–011 by following the Instructions,
paragraph H. of Sikorsky SSI 92–121.
(viii) Install MOD Kit Auxiliary Cabin
Panel Faceplate P/N 92070–55075–012 by
following the Instructions, paragraph J. of
Sikorsky SSI 92–121.
(2) For helicopters S/N 920297 through
920304 inclusive and S/N 920311 through
920314 inclusive:
(i) Modify the auxiliary circuit breaker
panel and transmission harness by following
the Instructions, paragraph I. of Sikorsky SSI
92–121.
(ii) Install MOD Kit Auxiliary Cabin Panel
Faceplate P/N 92070–55075–012 by
following the Instructions, paragraph J. of
Sikorsky SSI 92–121.
(3) Insert a copy of the Rotorcraft Flight
Manual (RFM) Supplement No. 45, Revision
No. 2, Sikorsky Model S–92A, Part 1, dated
April 27, 2017, into the RFM for your
helicopter.
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(h) Credit for Previous Actions
Completion of the Accomplishment
Instructions of Sikorsky S–92 Helicopter
Alert Service Bulletin 92–63–037, Revision
A, dated March 1, 2018, before the effective
date of this AD is considered acceptable for
compliance with the actions required by
paragraph (g) of this AD.
(i) Alternative Methods of Compliance
(AMOCs)
(1) The Manager, Boston ACO Branch,
FAA, has the authority to approve AMOCs
for this AD, if requested using the procedures
found in 14 CFR 39.19. In accordance with
14 CFR 39.19, send your request to your
principal inspector or local Flight Standards
District Office, as appropriate. If sending
information directly to the manager of the
certification office, send it to the attention of
the person identified in paragraph (j)(1) of
this AD.
(2) Before using any approved AMOC,
notify your appropriate principal inspector,
or lacking a principal inspector, the manager
of the local flight standards district office/
certificate holding district office.
(j) Related Information
(1) For more information about this AD,
contact Michael Schwetz, Aviation Safety
Engineer, Boston ACO Branch, Compliance &
VerDate Sep<11>2014
17:13 Feb 14, 2020
Jkt 250001
Airworthiness Division, FAA, 1200 District
Avenue, Burlington, MA 01803; telephone
781–238–7761; email michael.schwetz@
faa.gov.
(2) For service information identified in
this AD, contact your local Sikorsky Field
Representative or Sikorsky’s Service
Engineering Group at Sikorsky Aircraft
Corporation, 124 Quarry Road, Trumbull, CT
06611; telephone 1–800–Winged–S; email
wcs_cust_service_eng.gr-sik@lmco.com.
Operators may also log on to the Sikorsky
360 website at https://www.sikorsky360.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.
Issued in Fort Worth, Texas, on February
4, 2020.
Lance T. Gant,
Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2020–03072 Filed 2–14–20; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2020–0094; Product
Identifier 2019–NM–188–AD]
RIN 2120–AA64
Airworthiness Directives; The Boeing
Company Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
The FAA proposes to
supersede Airworthiness Directive (AD)
2018–06–07, which applies to all The
Boeing Company Model 757–200,
–200CB, and –300 series airplanes. AD
2018–06–07 requires inspecting the
fuselage frame at a certain station for
existing repairs, repetitive inspections,
and applicable repairs. Since the FAA
issued AD 2018–06–07, the agency has
received reports of new crack findings
outside of the AD 2018–06–07
inspection area, which the current
inspections will not detect. This
proposed AD would continue to require
the actions in AD 2018–06–07, with an
expanded inspection area, additional
inspections, a modified inspection type,
and applicable repairs. 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 April 3, 2020.
SUMMARY:
PO 00000
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8773
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 Boeing service information
identified in this NPRM, contact Boeing
Commercial Airplanes, Attention:
Contractual & Data Services (C&DS),
2600 Westminster Blvd., MC 110–SK57,
Seal Beach, CA 90740–5600; phone:
562–797–1717; internet: https://
www.myboeingfleet.com.
For Aviation Partners Boeing service
information identified in this NPRM,
contact Aviation Partners Boeing, 2811
S 102nd Street, Suite 200, Seattle, WA
98168; phone: 206–830–7699; internet:
https://www.aviationpartnersboeing.
com.
You may view this service
information at the FAA, Transport
Standards Branch, 2200 South 216th St.,
Des Moines, WA. For information on the
availability of this material at the FAA,
call 206–231–3195. Boeing Alert Service
Bulletin 757–53A0108, Revision 1,
dated July 17, 2019, is also available on
the internet at https://www.regulations.
gov by searching for and locating Docket
No. FAA–2020–0094.
ADDRESSES:
Examining the AD Docket
You may examine the AD docket on
the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2020–
0094; 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
regulatory evaluation, any comments
received, and other information. The
street address for Docket Operations is
listed above. Comments will be
available in the AD docket shortly after
receipt.
FOR FURTHER INFORMATION CONTACT:
Peter Jarzomb, Aerospace Engineer,
Airframe Section, FAA, Los Angeles
ACO Branch, 3960 Paramount
Boulevard, Lakewood, CA 90712–4137;
phone: 562–627–5234; fax: 562–627–
5210; email: peter.jarzomb@faa.gov.
SUPPLEMENTARY INFORMATION:
E:\FR\FM\18FEP1.SGM
18FEP1
]]>Agencies
[Federal Register Volume 85, Number 32 (Tuesday, February 18, 2020)]
[Proposed Rules]
[Pages 8771-8773]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-03072]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2019-1115; Product Identifier 2018-SW-065-AD]
RIN 2120-AA64
Airworthiness Directives; Sikorsky Aircraft Corporation
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 Sikorsky Aircraft Corporation (Sikorsky) Model S-92A
helicopters. This proposed AD was prompted by two incidents of
erroneous low oil pressure caution cockpit indications and unintended
actuation of the main gearbox (MGB) auto bypass valve. This proposed AD
would require installing auxiliary circuit breaker modification (MOD)
kits and inserting a Rotorcraft Flight Manual (RFM) Supplement into the
RFM for your helicopter. 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 April 3,
2020.
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 your local
Sikorsky Field Representative or Sikorsky's Service Engineering Group
at Sikorsky Aircraft Corporation, 124 Quarry Road, Trumbull, CT 06611;
telephone 1-800-Winged-S; email [email protected].
Operators may also log on to the Sikorsky 360 website at https://www.sikorsky360.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.
Examining the AD Docket
You may examine the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2019-
1115; 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 regulatory evaluation, any comments received, and other
information. The street address for Docket Operations is listed above.
Comments will be available in the AD docket shortly after receipt.
FOR FURTHER INFORMATION CONTACT: Michael Schwetz, Aviation Safety
Engineer, Boston ACO Branch, Compliance & Airworthiness Division, FAA,
1200 District Avenue, Burlington, MA 01803; telephone 781-238-7761;
email [email protected].
SUPPLEMENTARY INFORMATION:
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 the ADDRESSES section. Include ``Docket No. FAA-2019-1115;
Product Identifier 2018-SW-065-AD'' at the beginning of your comments.
The FAA specifically invites comments on the overall regulatory,
economic, environmental, and energy aspects of this NPRM. The FAA will
consider all comments received by the closing date and may amend this
NPRM because of those comments.
The FAA will post all comments received, without change, to https://www.regulations.gov, including any personal information you provide.
The FAA will also post a report summarizing each substantive verbal
contact received about this NPRM.
Discussion
The FAA proposes to adopt a new AD for Sikorsky Model S-92A
helicopters. This proposed AD is prompted by two incidents of erroneous
low oil pressure caution cockpit indications and unintended actuation
of the MGB auto bypass valve caused by unintended popping of the M XMSN
OIL WARN circuit breaker during flight. The root cause of this circuit
breaker popping is unknown. When this circuit breaker trips, the
following cautions will display ``MGB PUMP 1 FAIL, MGB PUMP 2 FAIL, MGB
OIL HOT, MGB MAN COOL, MGB OIL PRES.'' With the MGB auto bypass valve
actuated, the MGB BYPASS caution will not annunciate. For the given
conditions, the appropriate action for the crew is ``land as soon as
possible'' in accordance with the RFM Emergency Procedures. The
erroneous indications conflicting with correct gauge readings may
overwhelm the flight crew, resulting in a forced landing of the
helicopter.
To address this unsafe condition, Sikorsky developed MOD kits based
on helicopter serial number (S/N) to introduce a separate circuit
breaker for the MGB last jet pressure switch. These MOD kits specify
reworking the overhead panel to install new clips and brackets, circuit
breaker wiring harnesses, wiring MODs, the auxiliary circuit breaker
panel, and the M XMSN PRESS SWITCH circuit breaker.
Related Service Information Under 1 CFR Part 51
The FAA reviewed Sikorsky Special Service Instructions No. 92-121,
dated October 26, 2017 (SSI 92-121). This service information describes
procedures for installing an auxiliary circuit breaker panel MOD kit
and M XMSN PRESS SWITCH circuit breaker MOD kit based on helicopter S/
N.
The FAA also reviewed RFM Supplement No. 45, Revision No. 2,
Sikorsky Model S-92A, Part 1, dated April 27, 2017 (S-92A RFMS 45, Part
1, Revision 2). This service information specifies operating
limitations, preflight checks, normal and emergency procedures, and
malfunction information for helicopters with Avionics Management System
version 7.1 or 8.0 with the MGB OIL OUT warning activated, pump failure
indicating system, MGB auto bypass, and M XMSN PRESS SWITCH circuit
breaker installed.
[[Page 8772]]
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 reviewed Sikorsky S-92 Helicopter Alert Service Bulletin
92-63-037, Revision A, dated March 1, 2018. This service information
contains planning information pertaining to the auxiliary circuit
breaker panel and M XMSN PRESS SWITCH circuit breaker MOD kits,
accomplishing SSI 92-121, and inserting S-92A RFMS 45, Part 1, Revision
2 into the helicopter cockpit.
FAA's Determination
The FAA is proposing this AD after evaluating all the relevant
information and determining that the unsafe condition described
previously is likely to exist or develop in other products of the same
type design.
Proposed AD Requirements
This proposed AD would require, within 400 hours time-in-service:
For helicopters S/N 920006 through 920296 inclusive,
installing an auxiliary circuit breaker panel and M XMSN PRESS SWITCH
circuit breaker by installing MOD Kit Clips and Brackets part number
(P/N) 92070-20115-015, MOD Kit Left Hand (LH) Cockpit Auxiliary Power
Unit P/N 92070-55096-012, MOD Kit LH Cabin Auxiliary Power Unit P/N
92070-55096-013, MOD Kit LH Top Deck FLD P/N 92070-55096-016, MOD Kit
MGB XMSN P/N 92070-55096-017, MOD Kit Auxiliary Circuit Break Panel P/N
92070-55075-011, and MOD Kit Auxiliary Cabin Panel Faceplate P/N 92070-
55075-012.
For helicopters S/N 920297 through 920304 inclusive and S/
N 920311 through 920314 inclusive, modifying the auxiliary circuit
breaker panel and transmission harness and installing MOD Kit Auxiliary
Cabin Panel Faceplate P/N 92070-55075-012.
Inserting a copy of S-92A RFMS 45, Part 1, Revision 2 into
the RFM for your helicopter.
Costs of Compliance
The FAA estimates that this proposed AD affects 36 helicopters of
U.S. registry. The FAA estimate the following costs to comply with this
proposed AD. Labor costs are estimated at $85 per work-hour.
Modifying helicopters S/N 920006 through 920296 inclusive would
take about 48 work-hours and parts would cost about $1,618 for an
estimated cost of $5,698 per helicopter and $182,336 for the U.S. fleet
size of 32 helicopters.
Modifying helicopters S/N 920297 through 920304 inclusive and S/N
920311 through 920314 inclusive would take about 2 work-hours and parts
would cost about $65 for an estimated cost of $235 per helicopter and
$940 for the U.S. fleet size of 4 helicopters.
Revising the RFM would take about 0.5 work-hour for an estimated
cost of $43 per helicopter and $1,548 for the U.S. fleet.
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
The 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 above, I certify this proposed
regulation:
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.
The FAA 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):
Sikorsky Aircraft Corporation: Docket No. FAA-2019-1115; Product
Identifier 2018-SW-065-AD.
(a) Comments Due Date
The FAA must receive comments by April 3, 2020.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Sikorsky Aircraft Corporation Model S-92A
helicopters, serial number (S/N) 920006 through 920304 inclusive and
S/N 920311 through 920314 inclusive, certificated in any category.
(d) Subject
Joint Aircraft System Component (JASC) Code: 6340, Rotor Drive
Indicating System.
(e) Unsafe Condition
This AD was prompted by two incidents of erroneous low oil
pressure caution cockpit indications and unintended actuation of the
main gearbox (MGB) auto bypass valve. The FAA is issuing this AD to
prevent the M XMSM OIL WARN circuit breaker from presenting
erroneous cautions when tripped. The unsafe condition, if not
addressed, could result in erroneous low oil pressure caution
cockpit indication, unintended actuation of the MGB auto bypass
valve, increased oil temperature, conflicting indications, and
forced landing of the helicopter.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
Within 400 hours time-in-service:
(1) For helicopters S/N 920006 through 920296 inclusive:
(i) Install Modification (MOD) Kit Clips and Brackets part
number (P/N) 92070-20115-015 by following the Instructions,
paragraph B. of Sikorsky Special Service Instructions No. 92-121,
dated October 26, 2017 (SSI 92-121).
[[Page 8773]]
(ii) Install the first portion of MOD Kit Auxiliary Circuit
Breaker Panel P/N 92070-55075-011 by following the Instructions,
paragraph C. of Sikorsky SSI 92-121.
(iii) Install MOD Kit Left Hand (LH) Cockpit Auxiliary Power
Unit P/N 92070-55096-012 by following the Instructions, paragraph D.
of Sikorsky SSI 92-121.
(iv) Install MOD Kit LH Cabin Auxiliary Power Unit P/N 92070-
55096-013 by following the Instructions, paragraph E. of Sikorsky
SSI 92-121.
(v) Install MOD Kit LH Top Deck FLD P/N 92070-55096-016 by
following the Instructions, paragraph F. of Sikorsky SSI 92-121.
(vi) Install MOD Kit MGB XMSN P/N 92070-55096-017 by following
the Instructions, paragraph G. of Sikorsky SSI 92-121.
(vii) Install the completion portion of MOD Kit Auxiliary
Circuit Break Panel P/N 92070-55075-011 by following the
Instructions, paragraph H. of Sikorsky SSI 92-121.
(viii) Install MOD Kit Auxiliary Cabin Panel Faceplate P/N
92070-55075-012 by following the Instructions, paragraph J. of
Sikorsky SSI 92-121.
(2) For helicopters S/N 920297 through 920304 inclusive and S/N
920311 through 920314 inclusive:
(i) Modify the auxiliary circuit breaker panel and transmission
harness by following the Instructions, paragraph I. of Sikorsky SSI
92-121.
(ii) Install MOD Kit Auxiliary Cabin Panel Faceplate P/N 92070-
55075-012 by following the Instructions, paragraph J. of Sikorsky
SSI 92-121.
(3) Insert a copy of the Rotorcraft Flight Manual (RFM)
Supplement No. 45, Revision No. 2, Sikorsky Model S-92A, Part 1,
dated April 27, 2017, into the RFM for your helicopter.
(h) Credit for Previous Actions
Completion of the Accomplishment Instructions of Sikorsky S-92
Helicopter Alert Service Bulletin 92-63-037, Revision A, dated March
1, 2018, before the effective date of this AD is considered
acceptable for compliance with the actions required by paragraph (g)
of this AD.
(i) Alternative Methods of Compliance (AMOCs)
(1) The Manager, Boston ACO Branch, FAA, has the authority to
approve AMOCs for this AD, if requested using the procedures found
in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request
to your principal inspector or local Flight Standards District
Office, as appropriate. If sending information directly to the
manager of the certification office, send it to the attention of the
person identified in paragraph (j)(1) of this AD.
(2) Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the local flight standards district office/certificate holding
district office.
(j) Related Information
(1) For more information about this AD, contact Michael Schwetz,
Aviation Safety Engineer, Boston ACO Branch, Compliance &
Airworthiness Division, FAA, 1200 District Avenue, Burlington, MA
01803; telephone 781-238-7761; email [email protected].
(2) For service information identified in this AD, contact your
local Sikorsky Field Representative or Sikorsky's Service
Engineering Group at Sikorsky Aircraft Corporation, 124 Quarry Road,
Trumbull, CT 06611; telephone 1-800-Winged-S; email
[email protected]. Operators may also log on to
the Sikorsky 360 website at https://www.sikorsky360.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.
Issued in Fort Worth, Texas, on February 4, 2020.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2020-03072 Filed 2-14-20; 8:45 am]
BILLING CODE 4910-13-P
