[Federal Register: February 20, 2009 (Volume 74, Number 33)]
[Proposed Rules]
[Page 7833-7834]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr20fe09-31]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2009-0113; Directorate Identifier 2008-NE-25-AD]
RIN 2120-AA64
Airworthiness Directives; Hamilton Sundstrand Propellers Model
247F Propellers
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for Hamilton Sundstrand Propellers model 247F propeller assemblies with
certain part number (P/N) and serial number (SN) blades. This proposed
AD would require removing affected propeller blades from service. This
proposed AD results from reports of blades with corrosion pits in the
tulip area of the blades. We are proposing this AD to prevent cracks
from developing in the tulip area of the blade, which could result in
separation of the blade and possible loss of airplane control.
DATES: We must receive any comments on this proposed AD by April 21,
2009.
ADDRESSES: Use one of the following addresses to comment on this
proposed AD.
Federal eRulemaking Portal: Go to http://
www.regulations.gov and follow the instructions for sending your
comments electronically.
Mail: Docket Management Facility, U.S. Department of
Transportation, 1200 New Jersey Avenue, SE., West Building Ground
Floor, Room W12-140, Washington, DC 20590-0001.
Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
Fax: (202) 493-2251.
You can get the service information identified in this proposed AD
from Hamilton Sundstrand Propeller Technical Team, One Hamilton Road,
Mail Stop 1-3-AB43, Windsor Locks, CT 06096-1010; fax (860) 654-5107.
FOR FURTHER INFORMATION CONTACT: Terry Fahr, Aerospace Engineer, Boston
Aircraft Certification Office, FAA, Engine & Propeller Directorate, 12
New England Executive Park, Burlington, MA 01803; e-mail:
terry.fahr@faa.gov; telephone (781) 238-7155; fax (781) 238-7170.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send us any written relevant data, views, or
arguments regarding this proposal. Send your comments to an address
listed under ADDRESSES. Include ``Docket No. FAA-2009-0113; Directorate
Identifier 2008-NE-25-AD'' in the subject line of your comments. We
specifically invite comments on the overall regulatory, economic,
environmental, and energy aspects of the proposed AD. We will consider
all comments received by the closing date and may amend the proposed AD
in light of those comments.
We will post all comments we receive, without change, to http://
www.regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact
with FAA personnel concerning this proposed AD. Using the search
function of the Web site, anyone can find and read the comments in any
of our dockets, including, if provided, the name of the individual who
sent the comment (or signed the comment on behalf of an association,
business, labor union, etc.). You may review the DOT's complete Privacy
Act Statement in the Federal Register published on April 11, 2000 (65
FR 19477-78).
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 regulatory
evaluation, any comments received, and other information. The street
address for the Docket Operations office (telephone (800) 647-5527) is
the same as the Mail address provided in the ADDRESSES section.
Comments will be available in the AD docket shortly after receipt.
Discussion
We have received reports of corrosion on 6 propeller blades. A lack
of adhesive and primer beyond the end of the compression wrap during
manufacturing of certain serial-numbered propeller blades, P/N R817370-
1, could result in corrosion pits developing in the tulip area of the
propeller blade. This condition, if not corrected, could cause cracks
in the tulip area, which could result in separation of the propeller
blade and possible loss of airplane control.
Relevant Service Information
We have reviewed and approved the technical contents of Hamilton
Sundstrand Service Bulletin 247F-61-54, Revision 1, dated January 12,
2004, that describes procedures for reworking and re-marking the blade
with a new P/N.
FAA's Determination and Requirements of the Proposed AD
We have evaluated all pertinent information and identified an
unsafe condition that is likely to exist or develop on other products
of this same type design. We are proposing this AD, which would require
removing propeller blades, P/N R817370-1, with a SN listed in this
proposed AD, within 30 days after the effective date of this proposed
AD.
Costs of Compliance
We estimate that this proposed AD would affect 25 propellers
installed on airplanes of U.S. registry. We also estimate that it would
take about 128 work-hours per propeller to perform the proposed
actions, and that the average labor rate is $80 per work-hour. Required
parts would cost about $50 per propeller. Based on these figures, we
estimate the total cost of the proposed AD to U.S. operators to be
$257,250.
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.
[[Page 7834]]
Regulatory Findings
We have 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 that the proposed AD:
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); 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.
We prepared a regulatory evaluation of the estimated costs to
comply with this proposed AD. You may get a copy of this summary at the
address listed under ADDRESSES.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Safety.
The Proposed Amendment
Under the authority delegated to me by the Administrator, the
Federal Aviation Administration 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.
Sec. 39.13 [Amended]
2. The FAA amends Sec. 39.13 by adding the following new
airworthiness directive:
Hamilton Sundstrand Corporation: Docket No. FAA-2009-0113;
Directorate Identifier 2008-NE-25-AD.
Comments Due Date
(a) The Federal Aviation Administration (FAA) must receive
comments on this airworthiness directive (AD) action by April 21,
2009.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Hamilton Sundstrand model 247F series
propellers with blades part number (P/N) 817370-1, serial numbers
(SNs) FR2018, FR2083, FR2103, FR2108, FR2109, FR2111, FR2123,
FR2178, FR2183, FR2187, FR2262, FR2276 through FR2279, FR2303, and
FR2389, installed. These propellers are installed on, but not
limited to, ATR-GIE Avions de Transport Regional ATR72-210 and
ATR72-210E airplanes.
Unsafe Condition
(d) This AD results from reports of blades with corrosion pits
in the tulip area of the blades. We are issuing this AD to prevent
cracks from developing in the tulip area of the blade, which could
result in separation of the blade and possible loss of airplane
control.
Compliance
(e) You are responsible for having the actions required by this
AD performed within 30 days after the effective date of this AD.
Removing Blades P/N R817370-1
(f) Remove blades P/N 817370-1, SNs FR2018, FR2083, FR2103,
FR2108, FR2109, FR2111, FR2123, FR2178, FR2183, FR2187, FR2262,
FR2276 through FR2279, FR2303, and FR2389.
Alternative Methods of Compliance
(g) The Manager, Boston Aircraft Certification Office, has the
authority to approve alternative methods of compliance for this AD
if requested using the procedures found in 14 CFR 39.19.
Related Information
(h) Contact Terry Fahr, Aerospace Engineer, Boston Aircraft
Certification Office, FAA, Engine Propeller Directorate, 12 New
England Executive Park, Burlington, MA 01803; e-mail:
terry.fahr@faa.gov; telephone (781) 238-7155; fax (781) 238-7170,
for more information about this AD.
(i) Hamilton Sundstrand Service Bulletin 247F-61-54, Revision 1,
dated January 12, 2004, pertains to the subject of this AD. Contact
Hamilton Sundstrand Propeller Technical Team, One Hamilton Road,
Mail Stop 1-3-AB43, Windsor Locks, CT 06096-1010; fax (860) 654-
5107, for a copy of this service information.
Issued in Burlington, Massachusetts, on February 11, 2009.
Peter A. White,
Assistant Manager, Engine and Propeller Directorate, Aircraft
Certification Service.
[FR Doc. E9-3608 Filed 2-19-09; 8:45 am]
BILLING CODE 4910-13-P