[Federal Register Volume 78, Number 119 (Thursday, June 20, 2013)]
[Proposed Rules]
[Pages 37162-37164]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2013-14694]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2013-0518; Directorate Identifier 2009-SW-021-AD]
RIN 2120-AA64
Airworthiness Directives; Agusta S.p.A. (Type Certificate
Currently Held by AgustaWestland S.p.A) (Agusta) Helicopters
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: We propose to adopt a new airworthiness directive (AD) for
Agusta Model A109A, A109AII, and A109C helicopters with a certain third
stage turbine wheel installed. This proposed AD would require
installing a placard on the instrument panel and revising the
limitations section of the rotorcraft flight manual (RFM). This
proposed AD is prompted by several incidents of third stage engine
turbine wheel failures, which were caused by excessive vibrations at
certain engine speeds during steady-state operations. The proposed
actions are intended to alert pilots to avoid certain engine speeds
during steady-state operations, prevent failure of the third stage
engine turbine, engine power loss, and subsequent loss of control of
the helicopter.
DATES: We must receive comments on this proposed AD by August 19, 2013.
ADDRESSES: You may send comments by any of the following methods:
Federal eRulemaking Docket: Go to http://www.regulations.gov. Follow the online instructions for sending your
comments electronically.
Fax: 202-493-2251.
Mail: Send comments to the U.S. Department of
Transportation, Docket Operations, M-30, West Building Ground Floor,
Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590-0001.
Hand Delivery: Deliver to the ``Mail'' address between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
Examining the AD Docket
You may examine the AD docket on the Internet at http://www.regulations.gov 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 proposed AD, the economic
evaluation, any comments received, and other information. The street
address for the Docket Operations Office (telephone 800-647-5527) is in
the ADDRESSES section. Comments will be available in the AD docket
shortly after receipt.
For service information identified in this proposed AD, contact
Agusta Westland, Customer Support & Services, Via Per Tornavento 15,
21019 Somma Lombardo (VA) Italy, ATTN: Giovanni Cecchelli; telephone
39-0331-711133; fax 39 0331 711180; or at http://www.agustawestland.com/technical-bullettins. You may review the
referenced service information at the FAA, Office of the Regional
Counsel, Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth,
Texas 76137.
FOR FURTHER INFORMATION CONTACT: Chinh Vuong, Aviation Safety Engineer,
Safety Management Group, Rotorcraft Directorate, FAA, 2601 Meacham
Blvd., Fort Worth, Texas 76137; telephone (817) 222-5110; email
[email protected].
SUPPLEMENTARY INFORMATION:
[[Page 37163]]
Comments Invited
We invite you to participate in this rulemaking by submitting
written comments, data, or views. We also invite comments relating to
the economic, environmental, energy, or federalism impacts that might
result from adopting the proposals in this document. The most helpful
comments reference a specific portion of the proposal, explain the
reason for any recommended change, and include supporting data. To
ensure the docket does not contain duplicate comments, commenters
should send only one copy of written comments, or if comments are filed
electronically, commenters should submit only one time.
We will file in the docket all comments that we receive, as well as
a report summarizing each substantive public contact with FAA personnel
concerning this proposed rulemaking. Before acting on this proposal, we
will consider all comments we receive on or before the closing date for
comments. We will consider comments filed after the comment period has
closed if it is possible to do so without incurring expense or delay.
We may change this proposal in light of the comments we receive.
Discussion
The European Aviation Safety Agency (EASA), which is the aviation
authority for Italy, has issued EASA AD No. 2009-0037-E, dated February
19, 2009, to correct an unsafe condition for Agusta Model A109A,
A109AII, and A109C helicopters with a Rolls Royce Corporation (RRC)
engine Model 250-C20B or 250-C20R/1 having a third stage turbine wheel
part number (P/N) 23065833 installed. EASA advises that following
several third stage turbine wheel failures, the engine type certificate
holder, RRC, issued Commercial Engine Bulletin (CEB) A-1400 Revision 3,
dated January 19, 2009 (CEB A-1400), to introduce an operational
limitation on the power turbine (N2) speed range (95% to 97%) for more
than 60 seconds in single or cumulative events for engines with the
third stage turbine wheel P/N 23065833 installed.
The EASA AD requires amending the RFMs and installing a placard as
described in Agusta Bollettino Tecnico No. 109-129, dated February 16,
2009 (BT 109-129). The EASA AD also states to avoid steady-state
operation in the 95% to 97% N2 range for more than 60 seconds, and
requires the corrective actions of CEB A-1400 if that limitation is
exceeded.
FAA's Determination
These helicopters have been approved by the aviation authority of
Italy and are approved for operation in the United States. Pursuant to
our bilateral agreement with Italy, EASA, its technical representative,
has notified us of the unsafe condition described in its AD. We are
proposing this AD because we evaluated all known relevant information
and determined that an unsafe condition is likely to exist or develop
on other helicopters of the same type design.
Related Service Information
Agusta has issued BT 109-129, which contains procedures for
installing a placard on the instrument panel below or near the engine
and rotor RPM power turbine (N2) indicator and for inserting the RFM
changes into the flight manual.
Proposed AD Requirements
This proposed AD would require installing a placard on the
instrument panel adjacent to the engine and rotor RPM power turbine
(N2) indicator and revising the Operating Limitations sections of the
Model A109A, A109AII, and A109C RFMs to limit steady-state operations
between speeds of 95% and 97%.
Costs of Compliance
We estimate that this proposed AD would affect 40 helicopters of
U.S. Registry. Based on an average labor rate of $85 per hour, we
estimate that operators may incur the following costs in order to
comply with this AD. Amending the RFM would require about 0.25 work-
hour, for a cost per helicopter of about $22 and a cost to U.S.
operators of $880. Installing the decal would require about 0.2 work-
hours, and required parts would cost about $5, for a cost per
helicopter of $22 and a cost to U.S. operators of $880. Based on these
estimates, the total cost of this proposed AD would be $44 per
helicopter and $1,760 for the U.S. operator 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.
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 products identified in this
rulemaking action.
Regulatory Findings
We 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. Is not a ``significant rule'' under the 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 under the criteria
of the Regulatory Flexibility Act.
We 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):
Agusta S.p.A. (Type Certificate Currently Held By Agustawestland
S.p.A.) (Agusta): Docket No. FAA-2013-0518; Directorate Identifier
2009-SW-021-AD.
[[Page 37164]]
(a) Applicability
This AD applies to Agusta Model A109A, A109AII, and A109C
helicopters with a third stage turbine wheel, part number 23065833,
installed, certificated in any category.
(b) Unsafe Condition
This AD defines the unsafe condition as a third stage turbine
vibration, which could result in turbine failure, engine power loss,
and subsequent loss of control of the helicopter.
(c) Comments Due Date
We must receive comments by August 19, 2013.
(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
Within 30 days:
(1) For Model A109A helicopters, revise the Power Plant
Limitations section, page 1-7, of the Model A109A Rotorcraft Flight
Manual (RFM) by inserting page 5 of Agusta Bollettino Tecnico No.
109-129, dated February 16, 2009 (BT 109-129).
(2) For Model A109AII helicopters, revise the Power Plant
Limitations section, page 1-6, of the Model A109A RFM by inserting
page 6 of BT 109-129.
(3) For Model A109C helicopters, revise the Power Plant and
Transmission Limitations section, page 1-8, of the Model A109A RFM
by inserting page 7 of BT 109-129.
(4) Install a placard on the instrument panel adjacent to the
Engine and Rotor RPM Power Turbine (N2) Indicator that states:
MIN. CONT. 97% N2--MIN. TRANS. 95% N2
(f) Alternative Methods of Compliance (AMOCs)
(1) The Manager, Safety Management Group, FAA, may approve AMOCs
for this AD. Send your proposal to: Chinh Vuong, Aviation Safety
Engineer, Safety Management Group, Rotorcraft Directorate, FAA, 2601
Meacham Blvd., Fort Worth, Texas 76137; 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
(1) For service information identified in this AD, contact
Agusta Westland, Customer Support & Services, Via Per Tornavento 15,
21019 Somma Lombardo (VA) Italy, ATTN: Giovanni Cecchelli; telephone
39-0331-711133; fax 39 0331 711180; or at http://www.agustawestland.com/technical-bullettins. You may review a copy
of the service information at the FAA, Office of the Regional
Counsel, Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth,
Texas 76137.
(2) The subject of this AD is addressed in European Aviation
Safety Agency AD No. 2009-0037-E, dated February 19, 2009.
(h) Subject
Joint Aircraft Service Component (JASC) Code: 7250: Turbine
Section.
Issued in Fort Worth, Texas, on June 13, 2013.
Kim Smith,
Directorate Manager, Rotorcraft Directorate, Aircraft Certification
Service.
[FR Doc. 2013-14694 Filed 6-19-13; 8:45 am]
BILLING CODE 4910-13-P