[Federal Register Volume 76, Number 202 (Wednesday, October 19, 2011)]
[Rules and Regulations]
[Pages 64791-64793]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2011-26885]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2011-0684; Directorate Identifier 2010-NE-27-AD;
Amendment 39-16842; AD 2011-22-01]
RIN 2120-AA64
Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG
(RRD) BR700-710 Series Turbofan Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: We are adopting a new airworthiness directive (AD) for the
products listed above. This AD results from mandatory continuing
airworthiness information (MCAI) issued by an aviation authority of
another country to identify and correct an unsafe condition on an
aviation product. The MCAI describes the unsafe condition as:
Analysis of service data carried out by Rolls-Royce Deutschland
has shown that the effect of touch-and-go and overshoot on life
cycle counting is higher than anticipated. Therefore, the life cycle
counting method for touch-and-go and overshoot as defined by the
Time Limits Manual needs to be changed to reflect this higher effect
on life.
We are issuing this AD to prevent failure of high-energy, life-limited
parts, uncontained engine failure, and damage to the airplane.
DATES: This AD becomes effective November 23, 2011.
ADDRESSES: The Docket Operations office is located at Docket Management
Facility, U.S. Department of Transportation, 1200 New Jersey Avenue,
SE., West Building Ground Floor, Room W12-140, Washington, DC 20590-
0001.
FOR FURTHER INFORMATION CONTACT: Mark Riley, Aerospace Engineer, Engine
Certification Office, FAA, Engine & Propeller Directorate, 12 New
England Executive Park, Burlington, MA 01803; e-mail:
[email protected]; phone: 781-238-7758; fax: 781-238-7199.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would apply to the specified products.
That NPRM was published in the Federal Register on July 5, 2011 (76 FR
39033). That NPRM proposed to correct an unsafe condition for the
specified products. The MCAI states that:
Analysis of service data carried out by Rolls-Royce Deutschland
has shown that the effect of touch-and-go and overshoot on life
cycle counting is higher than anticipated. Therefore, the life cycle
counting method for touch-and-go and overshoot as defined by the
Time Limits Manual needs to be changed to reflect this higher effect
on life.
This AD requires a change of the life cycle counting method for
touch-and-go and overshoot for all critical parts and the Low
Pressure (LP) compressor blades as specified in the Rolls-Royce
Deutschland Alert NMSB-BR700-72-A900504 Revision 1. The chapter 05-
00-01 and 05-00-02 of the applicable Time Limits Manuals will be
revised accordingly.
You may obtain further information by examining the MCAI in the AD
docket.
Comments
We gave the public the opportunity to participate in developing
this AD. We received no comments on the NPRM.
Conclusion
We reviewed the available data and determined that air safety and
the public interest require adopting the AD as proposed.
Differences Between This AD and the MCAI or Service Information
We have reviewed the MCAI and related service information and, in
general, agree with their substance. But we might have found it
necessary to use different words from those in the MCAI to ensure the
AD is clear for U.S. operators and is enforceable. In making these
changes, we do not intend to differ substantively from the information
provided in the MCAI and related service information.
We might also have required different actions in this AD from those
in the MCAI in order to follow our FAA policies. Any such differences
are described in a separate paragraph of the AD, and take precedence
over the actions copied from the MCAI.
Costs of Compliance
Based on the service information, we estimate that this AD would
affect about 1,052 products of U.S. registry. We also estimate that it
would take about 1 work-hour per product to comply with this AD. The
average labor rate is $85
[[Page 64792]]
per work-hour. Based on these figures, we estimate the cost of the AD
on U.S. operators to be $89,420.
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 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 this 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. 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 a regulatory evaluation of the estimated costs to
comply with this AD and placed it in the AD docket.
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 AD, the regulatory evaluation,
any comments received, and other information. The street address for
the Docket Operations office (phone: 800-647-5527) is provided in the
ADDRESSES section. Comments will be available in the AD docket shortly
after receipt.
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 AD:
2011-22-01 Rolls-Royce Deutschland Ltd & Co KG (Formerly Rolls-Royce
Deutschland GmbH, formerly BMW Rolls-Royce GmbH)]: Amendment 39-
16842; Docket No. FAA-2011-0684; Directorate Identifier 2011-NE-27-
AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective November
23, 2011.
Affected ADs
(b) None.
Applicability
(c) This AD applies to all Rolls-Royce Deutschland BR700-710A1-
10 and BR700-710A2-20 turbofan engines, all BR700-710C4-11 model
engines that have hardware configuration standard 710C4-11 engraved
on the engine data plate (Service Bulletin SB-BR700-72-101466
standard not incorporated), and all BR700-710C4-11 model engines
that have hardware configuration standard 710C4-11/10 engraved on
the engine data plate (Service Bulletin SB-BR700-72-101466 standard
incorporated). These engines are installed on, but not limited to,
Bombardier BD-700-1A10 and BD-700-1A11 airplanes and Gulfstream GV
(G500) and GV-SP (G550) airplanes.
Reason
(d) This AD results from:
Analysis of service data carried out by Rolls-Royce Deutschland
has shown that the effect of touch-and-go and overshoot on life
cycle counting is higher than anticipated. Therefore, the life cycle
counting method for touch-and-go and overshoot as defined by the
Time Limits Manual needs to be changed to reflect this higher effect
on life.
We are issuing this AD to prevent failure of high-energy, life-
limited parts, uncontained engine failure, and damage to the
airplane.
Actions and Compliance
(e) Unless already done, do the following actions.
(1) Within 30 days after the effective date of this AD, revise
the airworthiness limitations section (ALS) of the operators'
approved maintenance program (reference the Time Limits Manual
(TLM), chapters 05-00-01 and 05-00-02 of the applicable engine
manuals (EMs)) to remove the requirement to record each touch-and-go
or overshoot as \1/5\ of a flight cycle (FC) on an engine installed
on an airplane used for Pilot Training.
(2) Within 30 days after the effective date of this AD, revise
the ALS of the operators' approved maintenance program (reference
the TLM, chapters 05-00-01 and 05-00-02 of the applicable EMs) to
add a requirement to record each touch-and-go or overshoot as 1 FC
to the life of all critical parts and the fan blades.
(3) Within 120 days after the effective date of this AD,
determine the number of touch-and-go's and overshoots that each
individual critical part except the fan shaft and LP turbine rotor
shaft has experienced since entry into service for Pilot Training.
(i) If the number of touch-and-go's and overshoots on an
individual critical part is less than one percent of the total
number of FCs on the critical part, no further action is required by
this AD.
(ii) If the number of touch-and-go's and overshoots on an
individual critical part is one percent or more of the total number
of FCs on the critical part, disregard the previous calculations of
life on that individual critical part and retrospectively re-
calculate the accumulated FCs of that individual critical part by
the addition of one FC for every touch-and-go and overshoot to the
total number of FCs.
Definitions
(f) A touch-and-go is a phase of a flight where a landing
approach of an airplane is continued to the touch-down point and the
airplane immediately takes off again without stopping.
(g) An overshoot is a phase of a flight where a landing approach
of an airplane is not continued to the touch-down point. This
includes missed approaches due to safety reasons, weather minimums,
airplane engine configurations, runway incursions, and any other
undetermined causes.
FAA AD Differences
(h) This AD differs from the Mandatory Continuing Airworthiness
Information (MCAI) and/or service information as follows:
(1) This AD requires within 30 days after the effective date of
this AD, revising the ALS of the operators' approved maintenance
program (reference the TLM chapters 05-00-01 and 05-00-02 of the
applicable EMs) to remove the requirement to record each touch-and-
go or overshoot as \1/5\ of a FC on an engine installed on an
airplane used for Pilot Training, and adding a requirement to record
each touch-and-go or overshoot as 1 FC to the life of all critical
parts and the fan blades. The MCAI requires that the revised method
of life counting for each touch-and-go and overshoot be accomplished
within 4 months.
(2) The MCAI requires determining the total number of touch-and-
go's and overshoots that each individual critical part
[[Page 64793]]
(except the fan shaft and LP turbine rotor shaft) has experienced
since entry into service. This AD only requires determining those
numbers for touch-and-go's and overshoots that had occurred during
Pilot Training.
Alternative Methods of Compliance (AMOCs)
(i) The Manager, Engine Certification Office, FAA, has the
authority to approve AMOCs for this AD, if requested using the
procedures found in 14 CFR 39.19.
Related Information
(j) Refer to MCAI European Aviation Safety Agency Airworthiness
Directive 2010-0077, dated April 20, 2010, and Rolls-Royce
Deutschland Ltd & Co KG Alert Service Bulletin SB-BR700-72-A900504,
Revision 1, dated February 19, 2010, for related information.
Contact Rolls-Royce Deutschland Ltd & Co KG, Eschenweg 11,
Dahlewitz, 15827 Blankenfelde-Mahlow, Germany; phone: 49 0 33-7086-
1883; fax: 49 0 33-7086-3276, for a copy of this service
information.
(k) Contact Mark Riley, Aerospace Engineer, Engine Certification
Office, FAA, Engine & Propeller Directorate, 12 New England
Executive Park, Burlington, MA 01803; e-mail: [email protected];
phone: 781-238-7758; fax: 781-238-7199, for more information about
this AD.
Material Incorporated by Reference
(l) None.
Issued in Burlington, Massachusetts, on October 7, 2011.
Peter A. White,
Manager, Engine & Propeller Directorate, Aircraft Certification
Service.
[FR Doc. 2011-26885 Filed 10-18-11; 8:45 am]
BILLING CODE 4910-13-P