AGENCY: Federal Aviation Administration
(FAA), DOT.
ACTION: Final rule.
SUMMARY: We are superseding airworthiness directive (AD) 2007-03-02
for
all Rolls-Royce Deutschland (RRD) Tay 620-15, Tay 650-15, and Tay 651-
54 turbofan engines. AD 2007-03-02 required an ultrasonic inspection
(UI) of low-pressure (LP) compressor fan blades for cracks on certain
serial number (S/N) Tay 650-15 engines. AD 2007-03-02 also required,
for all Tay 611-8, 620-15, Tay 650-15, and Tay 651-54 engines, initial
and repetitive UIs of LP compressor fan blades. AD 2007-03-02 also
required, for Tay 650-15 and Tay 651-54 engines, UIs of LP compressor
fan blades whenever the blade set is removed from one engine and
installed on a different engine. This AD requires additional
inspections for the affected engines and removal of the Tay 611-8
engine from the applicability. This AD was prompted by a report of an
additional engine failure due to multiple fan blade separation. We are
issuing this AD to prevent failure of the LP compressor fan blade,
engine failure, and damage to the airplane.
DATES: This AD is effective May 8, 2014. Federal Register approved
the
incorporation by reference of a certain publication listed in this AD
as of May 8, 2014.
ADDRESSES: For service information identified in this AD, contact
Rolls-Royce Deutschland Ltd & Co KG, Eschenweg 11, D-15827
Blankenfelde--Mahlow, Germany; phone: 49 0 33 7086 1200; fax: 49 0 33
7086 1212. You may view this service information at the FAA, Engine &
Propeller Directorate, 12 New England Executive Park, Burlington, MA.
For information on the availability of this material at the FAA, call
781-238-7125.
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-2006-
24777; or in person at the Docket Management Facility between 9 a.m.
and 5 p.m., Monday through Friday, except Federal holidays. The AD
docket contains this AD, the mandatory continuing airworthiness
information (MCAI), the regulatory evaluation, any comments received,
and other information. The address for the Docket Office (phone: 800-
647-5527) is Document Management Facility, U.S. Department of
Transportation, Docket Operations, M-30, West Building Ground Floor,
Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT: Anthony W. Cerra Jr., Aerospace
Engineer, Engine & Propeller Directorate, FAA, 12 New England Executive
Park, Burlington, MA 01803; phone: 781-238-7128; fax: 781-238-7199;
email: anthony.cerra@faa.gov.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to supersede AD 2007-03-02, Amendment 39-14913 (72 FR 3936,
January 29, 2007), (``AD 2007-03-02''). AD 2007-03-02 applied to all
RRD Tay 611-8 and Tay 620-15 turbofan engines with LP compressor
module, part number (P/N) M01100AA or P/N M01100AB, installed, and Tay
650-15 and Tay 651-54 turbofan engines with LP compressor module, P/N
M01300AA or P/N M01300AB, installed. The NPRM published in the Federal
Register on November 29, 2013 (78 FR 71532). The NPRM proposed to
require a UI of LP compressor fan blades for cracks on certain S/N Tay
650-15 engines; initial and repetitive UIs of LP compressor fan blades
for all Tay 620-15, Tay 650-15, and Tay 651-54 engines; and UIs of LP
compressor fan blades whenever the blade set is removed from one engine
and installed on a different engine for Tay 650-15 and Tay 651-54
engines. The NPRM also proposed to require additional inspections for
the affected engines and removal of the Tay 611-8 engine from the
applicability of this AD.
Comments
We gave the public the opportunity to participate in developing
this AD. We received no comments on the NPRM (78 FR 71532, November 29,
2013).
Conclusion
We reviewed the relevant data and determined that air safety and
the public interest require adopting this AD as proposed.
Costs of Compliance
We estimate that this AD affects about 52 engines installed on
airplanes of U.S. registry. We also estimate that it will take about 4
hours per engine to remove and inspect an LP compressor blade set. The
average labor rate is $85 per hour. Prorated parts life will cost about
$11,750 per engine. Based on these figures, we estimate that the cost
of this AD on U.S. operators is $628,680.
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
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 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.
Adoption of the Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA amends part 39 of the Federal Aviation
Regulations (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 removing airworthiness directive (AD)
2007-03-02, Amendment 39-14913 (72 FR 3936, January 29, 2007) and
adding the following new AD:
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