Airworthiness Directives; Airbus Helicopters, 24783-24786 [2021-09760]
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Federal Register / Vol. 86, No. 88 / Monday, May 10, 2021 / Proposed Rules
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
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
2011–18–52, Amendment 39–17020 (77
FR 23109, April 18, 2012); and
■ b. Adding the following new
airworthiness directive:
■
■
Leonardo S.p.a. (Type Certificate Previously
Held by Agusta S.p.A.): Docket No.
FAA–2021–0348; Project Identifier
2018–SW–076–AD.
(a) Comments Due Date
The FAA must receive comments on this
airworthiness directive (AD) action by June
24, 2021.
(b) Affected ADs
This AD replaces AD 2011–18–52,
Amendment 39–17020 (77 FR 23109, April
18, 2012) (AD 2011–18–52).
(c) Applicability
This AD applies to Leonardo S.p.a. (type
certificate previously held by Agusta S.p.A.)
Model AB139 and AW139 helicopters,
certificated in any category, with tail rotor
(T/R) blade, part number (P/N)
3G6410A00131, 3G6410A00132,
3G6410A00133, 4G6410A00131,
4G6410A00132, or 4G6410A00133, installed.
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(d) Subject
Joint Aircraft Service Component (JASC)
Code: 6410, Tail Rotor Blades.
(e) Unsafe Condition
This AD defines the unsafe condition as a
crack in a T/R blade. This condition could
result in failure of a T/R blade and
subsequent loss of control of the helicopter.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Required Actions
(1) For T/R blade P/Ns 3G6410A00131 and
4G6410A00131, within 5 hours time-in-
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service (TIS) after May 3, 2012 (the effective
date of AD 2011–18–52), establish a life limit
of 600 hours TIS or 1,500 takeoff and landing
cycles (cycles), whichever occurs first, on the
affected T/R blades and update the
helicopter’s historical records. If a T/R
blade’s total number of cycles is unknown,
determine the T/R blade cycles by
multiplying the T/R blade’s hours TIS by 4.
(2) For T/R blade P/Ns 3G6410A00131 and
4G6410A00131, thereafter following
paragraph (g)(1) of this AD, remove any T/R
blade from service before accumulating 600
total hours TIS or 1,500 total cycles,
whichever occurs first.
(3) For T/R blade P/Ns 3G6410A00132,
3G6410A00133, 4G6410A00132, and
4G6410A00133, within 5 hours TIS after the
effective date of this AD, determine the total
number of cycles. If a T/R blade’s total
number of cycles is unknown, determine the
T/R blade cycles by multiplying the blade’s
hours TIS by 4. Before further flight, remove
any T/R blade from service that has
accumulated or exceeded its life limit as
follows. Thereafter, remove any T/R blade
from service before accumulating its life limit
as follows:
(i) T/R blade P/Ns 3G6410A00132 and
4G6410A00132: 1,200 total hours TIS or
3,200 total cycles, whichever occurs first.
(ii) T/R blade P/N 3G6410A00133: 40,000
total cycles.
(iii) T/R blade P/N 4G6410A00133: 4,033
total hours TIS or 40,000 cycles, whichever
occurs first.
Note 1 to paragraph (g)(3): A combination
of T/R blades having different P/Ns can be
installed on the same helicopter. The eligible
combinations of T/R blades P/N are listed in
AgustaWestland S.p.A. Mandatory Bollettino
Tecnico No. 139–265, Revision B, dated
February 18, 2014 (BT No. 139–265).
(4) For T/R blade P/Ns 3G6410A00131 and
P/N 4G6410A00131, within 25 hours TIS
after the effective date of this AD, and
thereafter at intervals not to exceed 25 hours
TIS, visually inspect the T/R blade for a crack
and damage that exceeds allowable limits.
Inspect in the area depicted in Figure 1 of BT
No. 139–265 using a mirror, a 5X or higher
power magnifying glass, and a flashlight, or
borescope. If there is a crack or damage that
exceeds allowable limits, before further
flight, remove the T/R blade from service.
(5) As of the effective date of this AD, do
not install on any helicopter any T/R blade
P/N 3G6410A00131 or P/N 4G6410A00131,
unless the actions required by paragraphs
(g)(1), (2), and (4) of this AD have been
accomplished.
(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 9-AVSAIR-730-AMOC@faa.gov.
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24783
(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 Matt Fuller, AD Program Manager,
Operational Safety Branch, Airworthiness
Products Section, General Aviation &
Rotorcraft Unit, FAA, 10101 Hillwood Pkwy.,
Fort Worth, TX 76177; telephone (817) 222–
5110; email matthew.fuller@faa.gov.
(2) For service information identified in
this AD, contact Leonardo S.p.a. Helicopters,
Emanuele Bufano, Head of Airworthiness,
Viale G.Agusta 520, 21017 C.Costa di
Samarate (Va) Italy; telephone +39–0331–
225074; fax +39–0331–229046; or at https://
www.leonardocompany.com/en/home. 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.
(3) The subject of this AD is addressed in
European Aviation Safety Agency (now
European Union Aviation Safety Agency)
(EASA) AD 2012–0076R2, dated February 20,
2014. You may view the EASA AD on the
internet at https://www.regulations.gov in the
AD Docket.
Issued on April 30, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021–09759 Filed 5–7–21; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2020–0904; Product
Identifier 2019–SW–041–AD]
RIN 2120–AA64
Airworthiness Directives; Airbus
Helicopters
Federal Aviation
Administration (FAA), DOT.
ACTION: Supplemental notice of
proposed rulemaking (SNPRM).
AGENCY:
The FAA is revising a notice
of proposed rulemaking (NPRM) that
applied to certain Airbus Helicopters
Model EC225LP helicopters. This action
revises the NPRM by revising the
required actions paragraph such that the
required actions apply to all helicopter
models specified in the applicability.
The FAA is proposing this
airworthiness directive (AD) to address
the unsafe condition on these products.
Since these actions would impose an
additional burden over those in the
NPRM, the agency is requesting
comments on this SNPRM.
SUMMARY:
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Federal Register / Vol. 86, No. 88 / Monday, May 10, 2021 / Proposed Rules
The FAA must receive comments
on this SNPRM by June 24, 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 between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal
holidays.
For service information identified in
this SNPRM, contact Airbus
Helicopters, 2701 N Forum Drive, Grand
Prairie, TX 75052; telephone (972) 641–
0000 or 800–232–0323; fax (972) 641–
3775; or at https://www.airbus.com/
helicopters/services/technicalsupport.html. 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.
DATES:
Examining the AD Docket
You may examine the AD docket at
https://www.regulations.gov by
searching for and locating Docket No.
FAA–2020–0904; or in person at Docket
Operations between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal
holidays. The AD docket contains the
NPRM, this SNPRM, 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:
James Blyn, Aviation Safety Engineer,
Strategic Policy Emerging Aircraft
Section, Policy and Innovation Division,
FAA, 10101 Hillwood Pkwy., Fort
Worth, TX 76177; telephone (817) 222–
5110; email james.blyn@faa.gov.
SUPPLEMENTARY INFORMATION:
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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–2020–0904; Product Identifier
2019–SW–041–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
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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 SNPRM
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 SNPRM, 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 SNPRM. Submissions containing
CBI should be sent to James Blyn,
Aviation Safety Engineer, Strategic
Policy Emerging Aircraft Section, Policy
and Innovation Division, FAA, 10101
Hillwood Pkwy., Fort Worth, TX 76177;
telephone (817) 222–5110; email
james.blyn@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.
borescope inspecting the entire length of
the inside of the fuel supply hose for
twisting. Depending on the inspection
results, the NPRM proposed to require
reinstalling or removing the fuel supply
hose from service. Additionally, the
NPRM proposed to prohibit installing a
certain part-numbered LH fuel supply
hose on any helicopter unless that LH
fuel supply hose is installed by
following certain procedures specified
in the manufacturer’s service bulletin.
The proposed requirements were
intended to prevent a decrease of the LH
engine power when accelerating to a
power setting corresponding to One
Engine Inoperative (OEI) power and
subsequent reduced control of the
helicopter. The NPRM was prompted by
EASA AD 2019–0092, dated April 26,
2019 (EASA AD 2019–0092), issued by
EASA, which is the Technical Agent for
the Member States of the European
Union, to correct an unsafe condition
for Airbus Helicopters (formerly
Eurocopter) Model EC 225 LP
helicopters, all serial numbers. EASA
advises that an occurrence was reported
where during an in-flight single engine
power check, the LH side engine
experienced a power loss. EASA states
that a subsequent investigation
determined that the fuel flow to the
affected engine was restricted by a
twisted fuel supply hose. EASA states
that this condition, if not detected and
corrected, could lead to a decrease of
the LH engine power when accelerating
to the power setting corresponding to
OEI power, and subsequent reduced
control of the helicopter. Accordingly,
the EASA AD requires a one-time visual
inspection of the fuel supply hose and
depending on the inspection results,
removing from service or replacing the
affected part. EASA also introduces reinstallation requirements for a fuel
supply hose that is being replaced or
reinstalled.
Background
The FAA issued an NPRM to amend
14 CFR part 39 by adding an AD that
would apply to Airbus Helicopters
Model EC225LP helicopters, with lefthand side (LH) engine fuel supply (fuel
supply) hose part number (P/N)
704A34416087 installed. The NPRM
published in the Federal Register on
October 7, 2020, (85 FR 63235). For
helicopters delivered to the first
operator before November 30, 2018, and
for helicopters delivered to the first
operator on or after November 30, 2018,
that have had the LH fuel supply hose
replaced or reinstalled before May 10,
2019, the NPRM proposed to require
visually inspecting the LH fuel supply
hose for twisting, and if needed,
Actions Since the NPRM Was Issued
Since the NPRM was issued, the FAA
determined that operators may not have
the information required to comply with
the required actions proposed in the
NPRM. Operators may not know the
date the helicopter was delivered to the
first operator. Additionally, operators
may not know whether the LH fuel
supply hose has been previously
removed or reinstalled since the
maintenance regulations do not require
certain operators to maintain these
records after one year. Accordingly, the
FAA has determined the proposed
paragraph (e)(1) of the NPRM must be
revised by deleting the language
referring to delivery dates and dates of
LH fuel supply hose replacement or
supporting data. The FAA will consider
all comments received by the closing
date and may again revise 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 proposed
AD.
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Federal Register / Vol. 86, No. 88 / Monday, May 10, 2021 / Proposed Rules
reinstallation. As a result of these
changes, all helicopters specified in the
applicability paragraph would be
required to comply with the required
actions in this proposed AD. Also, since
the NPRM was issued, the FAA has
determined that a limit on special flight
permits is required. This SNPRM
reflects this change that special flight
permits may be permitted provided that
there are no passengers on board.
Comments
The FAA received no comments on
the NPRM or on the determination of
the cost.
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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
proposing this AD after determining the
unsafe condition described previously is
likely to exist or develop in other
helicopters of these same type designs.
Certain changes described above expand
the scope of the NPRM. As a result, it
is necessary to reopen the comment
period to provide additional
opportunity for the public to comment
on this SNPRM.
hose from service. Additionally, this
proposed AD would prohibit installing
a certain part-numbered LH fuel supply
hose on any helicopter unless that LH
fuel supply hose is installed by
following certain procedures described
in the manufacturer’s service bulletin.
Differences Between This SNPRM and
the EASA AD
The EASA AD requires compliance
within 110 flight hours or 6 months,
whichever occurs first, while this
proposed AD would require compliance
within 110 hours time-in-service after
the effective date of this AD. The EASA
AD requires reporting information to
Airbus Helicopters if the LH fuel supply
hose is twisted on the inside, while this
proposed AD would not. Additionally,
the EASA AD is applicable to certain
aircraft delivered to the first operator
prior to 30 Nov 2018, and also to certain
aircraft in which the affected part or LH
engine were not replaced or reinstalled
before the effective date of the EASA
AD, whereas this proposed AD would
apply to EC225LP helicopters with a
certain LH fuel supply hose installed,
because operators might not know when
the helicopter was first delivered or
what maintenance was previously
performed.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Airbus Helicopters
Alert Service Bulletin No. EC225–
71A019, Revision 1, dated February 28,
2019, which specifies procedures for
removing the fuel supply hose from the
LH power plant, visually inspecting the
fuel supply hose for twisting, and
depending on inspection results,
performing an endoscope inspection on
the inside of the hose. This service
information also specifies procedures
required to install a serviceable fuel
supply hose.
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.
Costs of Compliance
The FAA estimates that this AD, if
adopted as proposed, would affect 28
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 proposed AD.
Visually inspecting the LH fuel
supply hose for twisting would take
about 1 work-hour for an estimated cost
of $85 per helicopter and $2,380 for the
U.S. fleet.
Replacing a LH fuel supply hose
would take about 8 work-hours and
parts would cost about $2,278 for an
estimated replacement cost of $2,958
per replacement.
Borescope inspecting the LH fuel
supply hose would take about 8 workhours for an estimated cost of $680 per
helicopter.
Proposed AD Requirements in This
SNPRM
For helicopters with a certain partnumbered LH fuel supply hose
installed, this proposed AD would
require visually inspecting the LH fuel
supply hose for twisting, and if needed,
borescope inspecting the entire length of
the inside of the fuel supply hose for
twisting. Depending on the inspection
results, this proposed AD would require
reinstalling or removing the fuel supply
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
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16:59 May 07, 2021
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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, I certify
this proposed regulation:
(1) Is not a ‘‘significant regulatory
action’’ under Executive Order 12866,
(2) Would not affect intrastate
aviation in Alaska, and
(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
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:
■
Airbus Helicopters: Docket No. FAA–2020–
0904; Product Identifier 2019–SW–041–
AD.
(a) Comments Due Date
The FAA must receive comments on this
airworthiness directive (AD) action by June
24, 2021.
(b) Affected ADs
None.
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Federal Register / Vol. 86, No. 88 / Monday, May 10, 2021 / Proposed Rules
identified in paragraph (j)(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.
(c) Applicability
This AD applies to Airbus Helicopters
Model EC225LP helicopters, certificated in
any category, with a left-hand side (LH)
engine fuel supply (fuel supply) hose part
number (P/N) 704A34416087 installed.
(d) Subject
Joint Aircraft Service Component (JASC)
Code: 2820, Aircraft Fuel Distribution
System.
(e) Unsafe Condition
This AD was prompted by a report of an
incorrect installation of the LH fuel supply
hose P/N 704A34416087. The FAA is issuing
this AD to prevent restricted fuel flow to the
LH engine. The unsafe condition, if not
addressed, could result in a decrease of the
LH engine power when accelerating to a
power setting corresponding to One Engine
Inoperative power and subsequent reduced
control of the helicopter.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Required Actions
(1) Within 110 hours time-in-service (TIS)
after the effective date of this AD, visually
inspect the LH fuel supply hose for twisting
as shown in Figures 1 and 2 of Airbus
Helicopters Alert Service Bulletin No.
EC225–71A019, Revision 1, dated February
28, 2019 (ASB EC225–71A019). If the LH fuel
supply hose has any twisting, before further
flight, borescope inspect the entire length of
the inside of the fuel supply hose for twisting
as shown in Figures 3 through 5 of ASB
EC225–71A019.
(i) If the inside of the LH fuel supply hose
has any twisting, before further flight, remove
the LH fuel supply hose from service and
install an airworthy LH fuel supply hose by
following the Accomplishment Instructions,
paragraph 3.B.3.b, of ASB EC225–71A019.
(ii) If the LH fuel supply hose does not
have any twisting, reinstall the LH fuel
supply hose by following the
Accomplishment Instructions, paragraph
3.B.3.b, of ASB EC225–71A019.
(2) As of the effective date of this AD, do
not install an LH fuel supply hose P/N
704A34416087 on any helicopter unless it is
installed by following the Accomplishment
Instructions, paragraph 3.B.3.b, of ASB
EC225–71A019.
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(h) Special Flight Permits
Special flight permits may be permitted
provided that there are no passengers on
board.
16:59 May 07, 2021
Jkt 253001
Issued on May 3, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021–09760 Filed 5–7–21; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2021–0331; Project
Identifier AD–2020–01703–T]
RIN 2120–AA64
Airworthiness Directives; The Boeing
Company Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
(i) 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
VerDate Sep<11>2014
(j) Related Information
(1) For more information about this AD,
contact James Blyn, Aviation Safety Engineer,
Strategic Policy Emerging Aircraft Section,
Policy and Innovation Division, FAA, 10101
Hillwood Pkwy., Fort Worth, TX 76177;
telephone (817) 222–5110; email 9-ASWFTW-AMOC-Requests@faa.gov.
(2) For service information identified in
this AD, contact Airbus Helicopters, 2701 N
Forum Drive, Grand Prairie, TX 75052;
telephone (972) 641–0000 or (800) 232–0323;
fax (972) 641–3775; or at https://
www.airbus.com/helicopters/services/
technical-support.html. 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 7617 N–321. 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 2019–0092, dated April 26, 2019.
You may view the EASA AD on the internet
at https://www.regulations.gov in the AD
Docket. You may view the EASA AD on the
internet at https://www.regulations.gov in
Docket No. FAA–2020–0904.
The FAA proposes to adopt a
new airworthiness directive (AD) for all
The Boeing Company Model 757
airplanes. This proposed AD was
prompted by significant changes,
including new or more restrictive
requirements, made to the airworthiness
limitations (AWLs) related to fuel tank
ignition prevention and the nitrogen
SUMMARY:
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generation system. This proposed AD
would require revising the existing
maintenance or inspection program, as
applicable, to incorporate new or more
restrictive airworthiness limitations.
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 June 24, 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 Boeing Commercial
Airplanes, Attention: Contractual & Data
Services (C&DS), 2600 Westminster
Blvd., MC 110–SK57, Seal Beach, CA
90740–5600; telephone 562–797–1717;
internet https://
www.myboeingfleet.com. You may view
this service information at the FAA,
Airworthiness Products Section,
Operational Safety Branch, 2200 South
216th St., Des Moines, WA. For
information on the availability of this
material at the FAA, call 206–231–3195.
Examining the AD Docket
You may examine the AD docket at
https://www.regulations.gov by
searching for and locating Docket No.
FAA–2021–0331; 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, any comments received, and
other information. The street address for
Docket Operations is listed above.
FOR FURTHER INFORMATION CONTACT: Tak
Kobayashi, Aerospace Engineer,
Propulsion Section, FAA, Seattle ACO
Branch, 2200 South 216th St., Des
Moines, WA 98198; phone and fax: 206–
231–3553; email: takahisa.kobayashi@
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 ADDRESSES. Include ‘‘Docket No.
E:\FR\FM\10MYP1.SGM
10MYP1
]]>Agencies
[Federal Register Volume 86, Number 88 (Monday, May 10, 2021)]
[Proposed Rules]
[Pages 24783-24786]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-09760]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2020-0904; Product Identifier 2019-SW-041-AD]
RIN 2120-AA64
Airworthiness Directives; Airbus Helicopters
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Supplemental notice of proposed rulemaking (SNPRM).
-----------------------------------------------------------------------
SUMMARY: The FAA is revising a notice of proposed rulemaking (NPRM)
that applied to certain Airbus Helicopters Model EC225LP helicopters.
This action revises the NPRM by revising the required actions paragraph
such that the required actions apply to all helicopter models specified
in the applicability. The FAA is proposing this airworthiness directive
(AD) to address the unsafe condition on these products. Since these
actions would impose an additional burden over those in the NPRM, the
agency is requesting comments on this SNPRM.
[[Page 24784]]
DATES: The FAA must receive comments on this SNPRM by June 24, 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 between 9 a.m. and
5 p.m., Monday through Friday, except Federal holidays.
For service information identified in this SNPRM, contact Airbus
Helicopters, 2701 N Forum Drive, Grand Prairie, TX 75052; telephone
(972) 641-0000 or 800-232-0323; fax (972) 641-3775; or at https://www.airbus.com/helicopters/services/technical-support.html. 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 at https://www.regulations.gov by
searching for and locating Docket No. FAA-2020-0904; or in person at
Docket Operations between 9 a.m. and 5 p.m., Monday through Friday,
except Federal holidays. The AD docket contains the NPRM, this SNPRM,
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: James Blyn, Aviation Safety Engineer,
Strategic Policy Emerging Aircraft Section, Policy and Innovation
Division, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone
(817) 222-5110; 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 ADDRESSES. Include ``Docket No. FAA-2020-0904; Product Identifier
2019-SW-041-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 again
revise 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 proposed AD.
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 SNPRM 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 SNPRM, 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 SNPRM. Submissions containing CBI should
be sent to James Blyn, Aviation Safety Engineer, Strategic Policy
Emerging Aircraft Section, Policy and Innovation Division, FAA, 10101
Hillwood Pkwy., Fort Worth, TX 76177; telephone (817) 222-5110; 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
The FAA issued an NPRM to amend 14 CFR part 39 by adding an AD that
would apply to Airbus Helicopters Model EC225LP helicopters, with left-
hand side (LH) engine fuel supply (fuel supply) hose part number (P/N)
704A34416087 installed. The NPRM published in the Federal Register on
October 7, 2020, (85 FR 63235). For helicopters delivered to the first
operator before November 30, 2018, and for helicopters delivered to the
first operator on or after November 30, 2018, that have had the LH fuel
supply hose replaced or reinstalled before May 10, 2019, the NPRM
proposed to require visually inspecting the LH fuel supply hose for
twisting, and if needed, borescope inspecting the entire length of the
inside of the fuel supply hose for twisting. Depending on the
inspection results, the NPRM proposed to require reinstalling or
removing the fuel supply hose from service. Additionally, the NPRM
proposed to prohibit installing a certain part-numbered LH fuel supply
hose on any helicopter unless that LH fuel supply hose is installed by
following certain procedures specified in the manufacturer's service
bulletin. The proposed requirements were intended to prevent a decrease
of the LH engine power when accelerating to a power setting
corresponding to One Engine Inoperative (OEI) power and subsequent
reduced control of the helicopter. The NPRM was prompted by EASA AD
2019-0092, dated April 26, 2019 (EASA AD 2019-0092), issued by EASA,
which is the Technical Agent for the Member States of the European
Union, to correct an unsafe condition for Airbus Helicopters (formerly
Eurocopter) Model EC 225 LP helicopters, all serial numbers. EASA
advises that an occurrence was reported where during an in-flight
single engine power check, the LH side engine experienced a power loss.
EASA states that a subsequent investigation determined that the fuel
flow to the affected engine was restricted by a twisted fuel supply
hose. EASA states that this condition, if not detected and corrected,
could lead to a decrease of the LH engine power when accelerating to
the power setting corresponding to OEI power, and subsequent reduced
control of the helicopter. Accordingly, the EASA AD requires a one-time
visual inspection of the fuel supply hose and depending on the
inspection results, removing from service or replacing the affected
part. EASA also introduces re-installation requirements for a fuel
supply hose that is being replaced or reinstalled.
Actions Since the NPRM Was Issued
Since the NPRM was issued, the FAA determined that operators may
not have the information required to comply with the required actions
proposed in the NPRM. Operators may not know the date the helicopter
was delivered to the first operator. Additionally, operators may not
know whether the LH fuel supply hose has been previously removed or
reinstalled since the maintenance regulations do not require certain
operators to maintain these records after one year. Accordingly, the
FAA has determined the proposed paragraph (e)(1) of the NPRM must be
revised by deleting the language referring to delivery dates and dates
of LH fuel supply hose replacement or
[[Page 24785]]
reinstallation. As a result of these changes, all helicopters specified
in the applicability paragraph would be required to comply with the
required actions in this proposed AD. Also, since the NPRM was issued,
the FAA has determined that a limit on special flight permits is
required. This SNPRM reflects this change that special flight permits
may be permitted provided that there are no passengers on board.
Comments
The FAA received no comments on the NPRM or on the determination of
the cost.
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 proposing this AD
after determining the unsafe condition described previously is likely
to exist or develop in other helicopters of these same type designs.
Certain changes described above expand the scope of the NPRM. As a
result, it is necessary to reopen the comment period to provide
additional opportunity for the public to comment on this SNPRM.
Related Service Information Under 1 CFR Part 51
The FAA reviewed Airbus Helicopters Alert Service Bulletin No.
EC225-71A019, Revision 1, dated February 28, 2019, which specifies
procedures for removing the fuel supply hose from the LH power plant,
visually inspecting the fuel supply hose for twisting, and depending on
inspection results, performing an endoscope inspection on the inside of
the hose. This service information also specifies procedures required
to install a serviceable fuel supply hose.
This service information is reasonably available because the
interested parties have access to it through their normal course of
business or by the means identified in the ADDRESSES section.
Proposed AD Requirements in This SNPRM
For helicopters with a certain part-numbered LH fuel supply hose
installed, this proposed AD would require visually inspecting the LH
fuel supply hose for twisting, and if needed, borescope inspecting the
entire length of the inside of the fuel supply hose for twisting.
Depending on the inspection results, this proposed AD would require
reinstalling or removing the fuel supply hose from service.
Additionally, this proposed AD would prohibit installing a certain
part-numbered LH fuel supply hose on any helicopter unless that LH fuel
supply hose is installed by following certain procedures described in
the manufacturer's service bulletin.
Differences Between This SNPRM and the EASA AD
The EASA AD requires compliance within 110 flight hours or 6
months, whichever occurs first, while this proposed AD would require
compliance within 110 hours time-in-service after the effective date of
this AD. The EASA AD requires reporting information to Airbus
Helicopters if the LH fuel supply hose is twisted on the inside, while
this proposed AD would not. Additionally, the EASA AD is applicable to
certain aircraft delivered to the first operator prior to 30 Nov 2018,
and also to certain aircraft in which the affected part or LH engine
were not replaced or reinstalled before the effective date of the EASA
AD, whereas this proposed AD would apply to EC225LP helicopters with a
certain LH fuel supply hose installed, because operators might not know
when the helicopter was first delivered or what maintenance was
previously performed.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 28 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 proposed AD.
Visually inspecting the LH fuel supply hose for twisting would take
about 1 work-hour for an estimated cost of $85 per helicopter and
$2,380 for the U.S. fleet.
Replacing a LH fuel supply hose would take about 8 work-hours and
parts would cost about $2,278 for an estimated replacement cost of
$2,958 per replacement.
Borescope inspecting the LH fuel supply hose would take about 8
work-hours for an estimated cost of $680 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 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, I certify this proposed regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Would not affect intrastate aviation in Alaska, and
(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:
Airbus Helicopters: Docket No. FAA-2020-0904; Product Identifier
2019-SW-041-AD.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) action by June 24, 2021.
(b) Affected ADs
None.
[[Page 24786]]
(c) Applicability
This AD applies to Airbus Helicopters Model EC225LP helicopters,
certificated in any category, with a left-hand side (LH) engine fuel
supply (fuel supply) hose part number (P/N) 704A34416087 installed.
(d) Subject
Joint Aircraft Service Component (JASC) Code: 2820, Aircraft
Fuel Distribution System.
(e) Unsafe Condition
This AD was prompted by a report of an incorrect installation of
the LH fuel supply hose P/N 704A34416087. The FAA is issuing this AD
to prevent restricted fuel flow to the LH engine. The unsafe
condition, if not addressed, could result in a decrease of the LH
engine power when accelerating to a power setting corresponding to
One Engine Inoperative power and subsequent reduced control of the
helicopter.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
(1) Within 110 hours time-in-service (TIS) after the effective
date of this AD, visually inspect the LH fuel supply hose for
twisting as shown in Figures 1 and 2 of Airbus Helicopters Alert
Service Bulletin No. EC225-71A019, Revision 1, dated February 28,
2019 (ASB EC225-71A019). If the LH fuel supply hose has any
twisting, before further flight, borescope inspect the entire length
of the inside of the fuel supply hose for twisting as shown in
Figures 3 through 5 of ASB EC225-71A019.
(i) If the inside of the LH fuel supply hose has any twisting,
before further flight, remove the LH fuel supply hose from service
and install an airworthy LH fuel supply hose by following the
Accomplishment Instructions, paragraph 3.B.3.b, of ASB EC225-71A019.
(ii) If the LH fuel supply hose does not have any twisting,
reinstall the LH fuel supply hose by following the Accomplishment
Instructions, paragraph 3.B.3.b, of ASB EC225-71A019.
(2) As of the effective date of this AD, do not install an LH
fuel supply hose P/N 704A34416087 on any helicopter unless it is
installed by following the Accomplishment Instructions, paragraph
3.B.3.b, of ASB EC225-71A019.
(h) Special Flight Permits
Special flight permits may be permitted provided that there are
no passengers on board.
(i) 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 (j)(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.
(j) Related Information
(1) For more information about this AD, contact James Blyn,
Aviation Safety Engineer, Strategic Policy Emerging Aircraft
Section, Policy and Innovation Division, FAA, 10101 Hillwood Pkwy.,
Fort Worth, TX 76177; telephone (817) 222-5110; email [email protected].
(2) For service information identified in this AD, contact
Airbus Helicopters, 2701 N Forum Drive, Grand Prairie, TX 75052;
telephone (972) 641-0000 or (800) 232-0323; fax (972) 641-3775; or
at https://www.airbus.com/helicopters/services/technical-support.html. 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 7617 N-321. 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 2019-0092, dated April 26, 2019.
You may view the EASA AD on the internet at https://www.regulations.gov in the AD Docket. You may view the EASA AD on
the internet at https://www.regulations.gov in Docket No. FAA-2020-
0904.
Issued on May 3, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-09760 Filed 5-7-21; 8:45 am]
BILLING CODE 4910-13-P
