[Federal Register Volume 82, Number 119 (Thursday, June 22, 2017)]
[Rules and Regulations]
[Pages 28399-28401]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-12800]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2017-0061; Directorate Identifier 2016-SW-005-AD;
Amendment 39-18934; AD 2017-13-04]
RIN 2120-AA64
Airworthiness Directives; Airbus Helicopters Deutschland GmbH
Helicopters
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: We are adopting a new airworthiness directive (AD) for Airbus
Helicopters Deutschland GmbH (Airbus Helicopters) Model MBB-BK 117 C-2
(including configuration C-2e) and MBB-BK 117 D-2 helicopters. This AD
requires replacing the main rotor (M/R) blade vibration absorbers. This
AD was prompted by a report of strong M/R blade vibrations on a Model
MBB-BK 117 C-2 helicopter. The actions of this AD are intended to
prevent an unsafe condition on these products.
DATES: This AD is effective July 27, 2017.
The Director of the Federal Register approved the incorporation by
reference of certain documents listed in this AD as of July 27, 2017.
ADDRESSES: For service information identified in this final rule,
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 http://www.airbushelicopters.com/website/en/ref/Technical-Support_73.html. You may review the referenced service information at
the FAA, Office of the Regional Counsel, Southwest Region, 10101
Hillwood Pkwy., Room 6N-321,
[[Page 28400]]
Fort Worth, TX 76177. It is also available on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2017-
0061.
Examining the AD Docket
You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2017-
0061; or in person at the Docket Operations Office between 9 a.m. and 5
p.m., Monday through Friday, except Federal holidays. The AD docket
contains this AD, the European Aviation Safety Agency (EASA) ADs, any
incorporated-by-reference service information, the economic evaluation,
any comments received, and other information. The street address for
the Docket Operations Office (phone: 800-647-5527) is U.S. Department
of Transportation, Docket Operations Office, M-30, West Building Ground
Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT: Matt Fuller, Senior Aviation Safety
Engineer, Safety Management Group, Rotorcraft Directorate, FAA, 10101
Hillwood Pkwy., Fort Worth, TX 76177; email [email protected].
SUPPLEMENTARY INFORMATION:
Discussion
On February 17, 2017, at 82 FR 10978, the Federal Register
published our notice of proposed rulemaking (NPRM), which proposed to
amend 14 CFR part 39 by adding an AD that would apply to Airbus
Helicopters Model MBB-BK 117 C-2 (including configuration C-2e) and
Model MBB-BK 117 D-2 helicopters with an M/R blade vibration absorber
spacer part number (P/N) 117-801841.11 installed. The NPRM proposed to
require replacing the M/R blade vibration absorbers. The proposed
requirements were intended to prevent damage to a bearing in an M/R
blade vibration absorber. Such damage could result in failure of the
bearing, possibly resulting in the loss of balls and damage to the
helicopter and injury to persons on the ground.
The NPRM was prompted by AD No. 2016-0002, dated January 4, 2016,
issued by EASA, which is the Technical Agent for the Member States of
the European Union, to correct an unsafe condition for Airbus
Helicopters Model MBB-BK 117 C-2, MBB-BK 117 C-2e, MBB-BK 117 D-2, and
Model MBB-BK 117 D-2m helicopters. EASA advises of damaged bearings
that if not corrected, could lead to the loss of balls from the ball
bearing while the M/R blade is turning, possibly resulting in damage to
the helicopter and injury to persons on the ground. To address this
unsafe condition, EASA requires replacing the spacers with flanged
spacers in the M/R blade vibration absorber and re-identifying the
vibration absorber and M/R blade.
Comments
We gave the public the opportunity to participate in developing
this AD, but we received no comments on the NPRM.
FAA's Determination
These helicopters have been approved by the aviation authority of
Germany and are approved for operation in the United States. Pursuant
to our bilateral agreement with Germany, EASA, its technical
representative, has notified us of the unsafe condition described in
the EASA AD. We are issuing this AD because we evaluated all
information provided by EASA and determined the unsafe condition exists
and is likely to exist or develop on other helicopters of these same
type designs and that air safety and the public interest require
adopting the AD requirements as proposed.
Interim Action
We consider this AD to be an interim action. The design approval
holder is currently developing a modification that will address the
unsafe condition identified in this AD. Once this modification is
developed, approved, and available, we might consider additional
rulemaking.
Differences Between This AD and the EASA AD
The EASA AD requires replacing the M/R blade vibration absorber
spacers within 12 months after the effective date of the EASA AD. This
AD requires the replacement within 200 hours TIS. The EASA AD applies
to Airbus Helicopters Model MBB-BK 117 D-2m helicopters. This AD does
not because Model MBB-BK 117 D-2m helicopters have no FAA type
certificate.
Related Service Information Under 1 CFR Part 51
We reviewed Airbus Helicopters Alert Service Bulletin (ASB) MBB-
BK117 C-2-62A-009 for Model MBB-BK 117 C-2 and C-2e helicopters and ASB
MBB-BK117 D-2-62A-001 for Model MBB-BK 117 D-2 and D-2m helicopters.
The ASBs, both Revision 1 and both dated October 28, 2015, specify
replacing the vibration absorber spacers with flanged spacers to
prevent the balls from escaping from the ball bearings. The ASBs also
provide procedures for re-identifying the M/R blade and vibration
absorber.
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
We estimate that this AD affects 136 helicopters of U.S. Registry
and that labor costs average $85 per work-hour. Based on these
estimates, we expect that modifying the M/R blade vibration absorber
spacers and re-identifying the parts require 4 work-hours and parts
cost about $1,439, for a total cost of $1,779 per helicopter and
$241,944 for the U.S. fleet. The cost of recording the new P/N is
minimal.
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
We are issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: ``General
requirements.'' Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on 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) Is not a ``significant rule'' under DOT Regulatory Policies and
Procedures (44 FR 11034, February 26, 1979);
(3) Will not affect intrastate aviation in Alaska to the extent
that it justifies making a regulatory distinction; and
(4) Will not have a significant economic impact, positive or
negative, on a substantial number of small entities
[[Page 28401]]
under the criteria of the Regulatory Flexibility Act.
We prepared an economic evaluation of the estimated costs to comply
with this 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.
Adoption of 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 (AD):
2017-13-04 Airbus Helicopters Deutschland GmbH (Airbus Helicopters):
Amendment 39-18934; Docket No. FAA-2017-0061; Directorate Identifier
2016-SW-005-AD.
(a) Applicability
This AD applies to Airbus Helicopters Model MBB-BK 117 C-2
(including configuration C-2e) and Model MBB-BK 117 D-2 helicopters
with a main rotor (M/R) blade vibration absorber spacer part number
(P/N) 117-801841.11 installed, certificated in any category.
(b) Unsafe Condition
This AD defines the unsafe condition as damage to a bearing in
an M/R blade vibration absorber. This condition could result in
failure of the bearing, possibly resulting in the loss of the balls
and damage to the helicopter and injury to persons on the ground.
(c) Effective Date
This AD becomes effective July 27, 2017.
(d) Compliance
You are responsible for performing each action required by this
AD within the specified compliance time unless it has already been
accomplished prior to that time.
(e) Required Actions
(1) Within 200 hours time-in-service:
(i) Replace each spacer on the vibration absorber with a flanged
spacer.
(ii) Re-identify each vibration absorber and M/R blade in
accordance with paragraphs 3.B.2.3. or 3.B.2.4, as applicable, of
Airbus Helicopters Alert Service Bulletin (ASB) MBB-BK117 C-2-62A-
009, Revision 1, dated October 28, 2015, or ASB MBB-BK117 D-2-62A-
001, Revision 1, dated October 28, 2015, whichever applies to your
model helicopter. Record the new P/Ns and serial numbers for each M/
R blade on the component history card or equivalent record.
(2) After replacing the spacer in accordance with paragraph
(e)(1) of this AD, do not install M/R blade P/N B621M1002103 or P/N
D621M1002101, vibration absorber P/N B621M3001101, or spacer P/N
117-801841.11 on that helicopter. You may install M/R blade P/N
B621M1002101 or P/N B621M1002102 provided you have complied with the
requirements of paragraph (e)(1) of this AD.
(f) Alternative Methods of Compliance (AMOCs)
(1) The Manager, Safety Management Group, FAA, may approve AMOCs
for this AD. Send your proposal to: Matt Fuller, Senior Aviation
Safety Engineer, Safety Management Group, Rotorcraft Directorate,
FAA, 10101 Hillwood Pkwy., Fort Worth, Texas 76177; telephone (817)
222-5110; email [email protected].
(2) For operations conducted under a 14 CFR part 119 operating
certificate or under 14 CFR part 91, subpart K, we suggest that you
notify your principal inspector, or lacking a principal inspector,
the manager of the local flight standards district office or
certificate holding district office, before operating any aircraft
complying with this AD through an AMOC.
(g) Additional Information
The subject of this AD is addressed in European Aviation Safety
Agency (EASA) AD No. 2015-0045, dated March 13, 2015, and corrected
April 2, 2015, and in EASA AD No. 2016-0002, dated January 4, 2016.
You may view the EASA ADs on the Internet at http://www.regulations.gov in Docket No. FAA-2017-0061.
(h) Subject
Joint Aircraft Service Component (JASC) Code: 6200, Main Rotor
System.
(i) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference 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) Airbus Helicopters Alert Service Bulletin MBB-BK117 C-2-62A-
009, Revision 1, dated October 28, 2015.
(ii) Airbus Helicopters Alert Service Bulletin MBB-BK117 D-2-
62A-001, Revision 1, dated October 28, 2015.
(3) For Airbus Helicopters 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 http://www.airbushelicopters.com/website/en/ref/Technical-Support_73.html.
(4) You may view this service information at 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.
(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, call (202) 741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued in Fort Worth, Texas, on June 6, 2017.
Scott A. Horn,
Acting Manager, Rotorcraft Directorate, Aircraft Certification Service.
[FR Doc. 2017-12800 Filed 6-21-17; 8:45 am]
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