[Federal Register: October 21, 2005 (Volume 70, Number 203)]
[Rules and Regulations]
[Page 61229-61232]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr21oc05-7]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 2000-NE-48-AD; Amendment 39-14343; AD 2005-21-05]
RIN 2120-AA64
Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG
(Formerly Rolls-Royce Deutschland GmbH, formerly BMW Rolls-Royce GmbH)
Models BR700-710A1-10 and BR700-710A2-20 Turbofan Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: The FAA is superseding an existing airworthiness directive
(AD) for Rolls-Royce Deutschland Ltd & Co KG (RRD) (formerly Rolls-
Royce Deutschland GmbH, formerly BMW Rolls-Royce GmbH) models BR700-
710A1-10 and BR700-710A2-20 turbofan engines. That AD currently
requires initial and repetitive visual and ultrasonic inspections of
fan discs, part numbers (P/Ns) BRR18803, BRR19248, and BRR20791 for
cracks, and if necessary, replacement with serviceable parts. This ad
requires those same inspections for discs having old design P/N fan
blades installed, and, extends the inspection interval for fan discs
having new design P/N fan blades installed. Also, this AD adds as
optional terminating action to the inspections, installation of certain
P/N new fan discs, certain P/N new fan blades, and engine fan speed
(N1) Keep Out Zone software. This AD results from a revised RRD service
bulletin (SB) that introduces relaxed inspection intervals for certain
P/N combinations of fan discs and fan blades, and introduces improved
design fan discs and fan blades.
DATES: This AD becomes effective November 25, 2005. The Director of the
Federal Register approved the incorporation by reference of certain
publications listed in the regulations as of November 25, 2005. The
Director of the Federal Register previously approved the incorporation
by reference of certain other publications as listed in the regulations
as of April 28, 2003 (68 FR 17727, April 11, 2003).
ADDRESSES: Contact Rolls-Royce Deutschland Ltd & Co KG, Eschenweg 11,
15827 Blankenfelde-Mahlow, Germany, telephone: 011 49 (0) 33-7086-1768,
fax: 011 49 (0) 33-7086-3356, for the service information identified in
this AD.
You may examine the AD docket at the FAA, New England Region,
Office of the Regional Counsel, 12 New England Executive Park,
Burlington, MA. You may examine the service information, at the FAA,
New England Region, Office of the Regional Counsel, 12 New England
Executive Park, Burlington, MA.
FOR FURTHER INFORMATION CONTACT: Jason Yang, Aerospace Engineer, Engine
Certification Office, FAA, Engine and Propeller Directorate, 12 New
England Executive Park, Burlington, MA 01803-5299; telephone: (781)
238-7747, fax: (781) 238-7199.
SUPPLEMENTARY INFORMATION: The FAA proposed to amend 14 CFR part 39
with a proposed AD. The proposed AD applies to Rolls-Royce Deutschland
Ltd & Co KG (RRD) (formerly Rolls-Royce Deutschland GmbH, formerly BMW
Rolls-Royce GmbH) models BR700-710A1-10 and BR700-710A2-20 turbofan
engines. We published the proposed AD in the Federal Register on July
5, 2005 (70 FR 38627). That action proposed to require initial and
repetitive inspections for cracks in fan discs P/Ns BRR18803, BRR19248,
BRR20791, BRR24829, and FW33929. That action also proposed as optional
terminating action to the repetitive inspection requirements,
installation of a new fan disc P/N FW33927, new fan blades P/N FW33513
or P/N FW33980, and N1 Keep Out Zone software.
Examining the AD Docket
You may examine the AD Docket (including any comments and service
information), by appointment, between 8 a.m. and 4:30 p.m., Monday
through Friday, except Federal holidays. See ADDRESSES for the
location.
[[Page 61230]]
Comments
We provided the public the opportunity to participate in the
development of this AD. We have considered the comments received.
Request To Cancel Inspections
One commenter, RRD, requests we cancel the inspections in
paragraphs (f)(1), (g)(1), (f)(3), and (g)(3), as these inspections
have been conducted on all hardware in service, and are no longer
needed. We disagree. Mandatory actions that published in the superseded
AD need to be carried forward in the superseding AD. The operator can
then determine if the affected engine is in compliance with all
mandatory actions.
Add Applicable Fan Blade Part Numbers to Paragraph (h)
The same commenter requests that we add the applicable fan blade
part numbers in paragraph (h), for clarity, as we did in paragraph (g).
We agree and have added fan blades P/N BRR20677 and BRR23178 to
paragraph (h).
Request To Cover Engines That Had a New Disc Installed on, or After,
January 1, 2002
The same commenter requests that we cover engines that had a new
production fan disc installed on or after January 1, 2002, in a new
paragraph in the compliance section. The commenter states that these
fan discs already had a visual and ultrasonic inspection before
delivery and installation, and only require initial inspection at 150
flight cycles-since-new. These engines are not appropriately covered by
the proposed AD. We agree and have added a paragraph to the compliance
section to cover these engines.
Request To Directly Identify Requirements
The same commenter requests that we clarify paragraphs (i) and (j)
by directly identifying the requirements, instead of referring to other
paragraphs. We agree and have changed paragraphs (i) and (j) to
identify the requirements.
Request To Change Repetitive Inspection Interval
The same commenter requests that in paragraphs (k)(1) and (k)(2),
we change the inspection interval time requirement from flight hours,
to A-Check. The commenter states that the proposed AD does not reflect
the requirements of RRD SB No. SB-BR700-72-900229, Revision 6, dated
February 23, 2005. The visual and ultrasonic inspections were always
aligned with the scheduled airplane maintenance A-Check. The commenter
further states that the A-Check occurs every 500-to-550 flight hours.
We partially agree. We consider the A-Check to occur at an indefinite
interval that can vary from operator to operator. However, in this
case, we have changed the compliance in paragraph (k)(1) to perform a
visual and ultrasonic inspection before accumulating 550 flight hours-
since-new. We also changed paragraph (k)(2) to perform a visual and
ultrasonic inspection at every A-Check but not to exceed 550 hours-
since-the last visual and ultrasonic inspection.
Request To Remove Inspection Requirements From the AD and Reference the
Time Limits Manual
The same commenter requests that we remove the inspection
requirements from paragraph (l) of the proposed AD, which is for
engines with fan disc P/N BRR20791, BRR24829, or FW33929 installed, and
fan blades P/N FW33513, FW33980, FW33925, FW34114, or FW34776
installed. The commenter requests that we refer to the applicable RRD
Time Limits Manual that mandates the inspections for these fan disc-
and-blade-engine configurations. We agree and have changed that
paragraph in the AD.
Request To Clarify the Optional Terminating Action
The same commenter requests that in the optional terminating action
paragraph, we change the phrase ``is optional terminating action to the
repetitive inspections required by this AD'' to ``is optional
terminating action to any inspection required by this AD''. The
commenter states that once the parts and the Keep Out Zone software
referenced in the optional terminating action paragraph are installed,
none of the inspections in the AD are required. We agree and have made
that change in the AD.
Request To Reference the Latest Service Bulletin
The same commenter requests that we reference the latest service
bulletin in the Inspection Reporting Requirements paragraph, which is
RRD SB No. SB-BR700-72-900229, Revision 6, dated February 23, 2005. We
agree and have made that change in the AD.
Conclusion
We have carefully reviewed the available data, including the
comments received, and determined that air safety and the public
interest require adopting the AD with the changes described previously.
We have determined that these changes will neither increase the
economic burden on any operator nor increase the scope of the AD.
Costs of Compliance
There are about 500 RRD models BR700-710A1-10 and BR700-710A2-20
turbofan engines of the affected design in the worldwide fleet. We
estimate that 400 engines installed on airplanes of U.S. registry are
affected by this AD. We also estimate that it will take about 7 work
hours per engine to perform the inspections, and that the average labor
rate is $65 per work hour. We estimate the total labor cost for
performing one inspection of the U.S. fleet to be $182,000. New design
fan discs and fan blades will cost about $150,000 per engine. Based on
these figures, the total cost of the AD on U.S. operators is estimated
to be $60,182,000. The manufacturer has stated that it may provide the
new fan disc and new fan blades at no cost to operators.
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 have 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 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); 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.
[[Page 61231]]
We prepared a summary of the costs to comply with this AD and
placed it in the AD Docket. You may get a copy of this summary by
sending a request to us at the address listed under ADDRESSES. Include
``AD Docket No. 2000-NE-48-AD'' in your request.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
0
Accordingly, under the authority delegated to me by the Administrator,
the Federal Aviation Administration 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 removing Amendment 39-13107 (68 FR
17727, April 11, 2003) and by adding a new airworthiness directive,
Amendment 39-14343, to read as follows:
2005-21-05 Rolls-Royce Deutschland Ltd & Co KG (formerly Rolls-Royce
Deutschland GmbH, formerly BMW Rolls-Royce GmbH): Amendment 39-
14343. Docket No. 2000-NE-48-AD.
Effective Date
(a) This AD becomes effective November 25, 2005.
Affected ADs
(b) This AD supersedes AD 2003-07-11, Amendment 39-13107.
Applicability
(c) This AD applies to Rolls-Royce Deutschland Ltd & Co KG (RRD)
(formerly Rolls-Royce Deutschland GmbH, formerly BMW Rolls-Royce
GmbH) models BR700-710A1-10 and BR700-710A2-20 turbofan engines.
These engines are installed on, but not limited to, Bombardier Inc.
BD-700-1A10, BD-700-1A11, and Gulfstream Aerospace Corp. G-V series
airplanes.
Unsafe Condition
(d) This AD results from a revised RRD service bulletin (SB)
that introduces relaxed inspection intervals for certain P/N
combinations of fan discs and fan blades, and introduces improved
design fan discs and fan blades. The actions specified in this AD
are intended to detect and prevent cracks in the fan disc that could
result in an uncontained engine failure and damage to the airplane.
Compliance
(e) You are responsible for having the actions required by this
AD performed within the compliance times specified unless the
actions have already been done.
Initial Inspection
Engines With Fan Disc P/N BRR18803 or BRR19248 Installed and Fan
Blades P/N BRR20677 or BRR23178 Installed
(f) For engines with fan disc P/N BRR18803 or BRR19248
installed, and fan blades P/N BRR20677 or BRR23178 installed, do the
following:
(1) If the last fan disc inspection was a visual inspection
performed using RRD SB No. SB-BR700-72-900229, Revision 3, dated
July 12, 2001; Revision 4, dated December 20, 2001; Revision 5,
dated January 8, 2003; or Revision 6, dated February 23, 2005,
visually or ultrasonically inspect fan disc within 25 flight cycles-
since-last inspection (CSLI). Use paragraphs A. through F. of the
applicable Part 1 or Part 2 of the Accomplishment Instructions of
RRD SB No. SB-BR700-72-900229, Revision 6, dated February 23, 2005
to do the inspection.
(2) If the last fan disc inspection was an ultrasonic inspection
performed using RRD SB No. SB-BR700-72-900229, Revision 3, dated
July 12, 2001; Revision 4, dated December 20, 2001; Revision 5,
dated January 8, 2003; or Revision 6, dated February 23, 2005,
visually or ultrasonically inspect fan disc within 75 CSLI. Use
paragraphs A. through F. of the applicable Part 1 or Part 2 of the
Accomplishment Instructions of RRD SB No. SB-BR700-72-900229,
Revision 6, dated February 23, 2005 to do the inspection.
(3) For engines that have not yet been inspected, visually or
ultrasonically inspect fan disc within 25 flight cycles after the
effective date of this AD. Use paragraphs A. through F. of the
applicable Part 1 or Part 2 of the Accomplishment Instructions of
RRD SB No. SB-BR700-72-900229, Revision 6, dated February 23, 2005
to do the inspection.
(4) If any cracks are found, remove the disc from service and
replace with a serviceable disc.
Engines With Fan Disc P/N BRR20791 Installed, and Fan Blades P/N
BRR20677 or BRR23178 Installed
(g) For BR700-710A1-10 engines with serial numbers (SNs) 11452
and lower, and BR700-710A2-20 engines with SNs 12352 and lower, with
fan disc P/N BRR20791 installed, and fan blades P/N BRR20677 or
BRR23178 installed, do the following:
(1) If the last fan disc inspection was a visual inspection
performed using RRD SB No. SB-BR700-72-900229, Revision 3, dated
July 12, 2001; Revision 4, dated December 20, 2001; Revision 5,
dated January 8, 2003; or Revision 6, dated February 23, 2005,
visually or ultrasonically inspect fan disc within 25 CSLI. Use
paragraphs A. through F. of the applicable Part 1 or Part 2 of the
Accomplishment Instructions of RRD SB No. SB-BR700-72-900229,
Revision 6, dated February 23, 2005 to do the inspection.
(2) If the last fan disc inspection was an ultrasonic inspection
performed using RRD SB No. SB-BR700-72-900229, Revision 3, dated
July 12, 2001; Revision 4, dated December 20, 2001; Revision 5,
dated January 8, 2003; or Revision 6, dated February 23, 2005,
visually or ultrasonically inspect fan disc within 150 CSLI. Use
paragraphs A. through F. of the applicable Part 1 or Part 2 of the
Accomplishment Instructions of RRD SB No. SB-BR700-72-900229,
Revision 6, dated February 23, 2005 to do the inspection.
(3) For engines that have not yet been inspected, visually or
ultrasonically inspect fan disc within 25 flight cycles after the
effective date of this AD. Use paragraphs A. through F. of the
applicable Part 1 or Part 2 of the Accomplishment Instructions of
RRD SB No. SB-BR700-72-900229, Revision 6, dated February 23, 2005
to do the inspection.
(4) If any cracks are found, remove the disc from service and
replace with a serviceable disc.
(h) For BR700-710A1-10 engines with SNs 11453 and higher, and
BR700-710A2-20 engines with SNs 12353 and higher with fan discs P/N
BRR20791 installed, and fan blades P/N BRR20677 or BRR23178
installed, do the following:
(1) Visually or ultrasonically inspect fan discs within 150
flight cycles-since-new (CSN). Use paragraphs A. through F. of the
applicable Part 1 or Part 2 of the Accomplishment Instructions of
RRD SB No. SB-BR700-72-900229, Revision 5, dated January 8, 2003; or
Revision 6, dated February 23, 2005 to do the inspection.
(2) If any cracks are found, remove the disc from service and
replace with a serviceable disc.
Engines With New Production Fan Discs
(i) For engines with new production fan discs P/N BRR20791
installed on or after January 1, 2002, and fan blades P/Ns BRR20677
or BRR23178 installed, do the following:
(1) Visually or ultrasonically inspect fan discs within 150
flight CSN. Use paragraphs A. through F. of the applicable Part 1 or
Part 2 of the Accomplishment Instructions of RRD SB No. SB-BR700-72-
900229, Revision 5, dated January 8, 2003; or Revision 6, dated
February 23, 2005 to do the inspection.
(2) If any cracks are found, remove the disc from service and
replace with a serviceable disc.
Repetitive Inspections
Engines With Fan Disc P/N BRR18803 or BRR19248 Installed, and Fan
Blades P/N BRR20677 or BRR23178 Installed
(j) For engines with fan disc P/N BRR18803 or BRR19248
installed, and fan blades P/N BRR20677 or BRR23178 installed, do the
following:
(1) Perform repetitive visual or ultrasonic inspections within
every 75 CSLI. Use paragraphs A. through F. of the applicable Part 1
or Part 2 of the Accomplishment Instructions of RRD SB No. SB-BR700-
72-900229, Revision 5, dated January 8, 2003; or Revision 6, dated
February 23, 2005 to do the inspection.
(2) Perform a visual and ultrasonic inspection before
accumulating 550 flight hours-since-new. Use paragraphs A. through
F. of the applicable Part 1 or Part 2 of the Accomplishment
Instructions of RRD SB No. SB-BR700-72-900229, Revision 5, dated
January 8, 2003, or Revision 6, dated February 23, 2005 to do the
inspection.
(3) Thereafter, perform a visual and an ultrasonic inspection at
every A-Check but not to exceed 550 flight hours-since-the last
visual and ultrasonic inspection.
[[Page 61232]]
Engines With Fan Disc P/N BRR20791 Installed, and Fan Blades P/N
BRR20677 or BRR23178 Installed
(k) For engines with fan disc P/N BRR20791 installed, and fan
blades P/N BRR20677 or BRR23178 installed, do the following:
(1) Perform repetitive visual or ultrasonic inspections within
every 150 CSLI. Use paragraphs A. through F. of the applicable Part
1 or Part 2 of the Accomplishment Instructions of RRD SB No. SB-
BR700-72-900229, Revision 5, dated January 8, 2003; or Revision 6,
dated February 23, 2005 to do the inspection.
(2) Perform a visual and ultrasonic inspection before
accumulating 550 flight hours-since-new. Use paragraphs A. through
F. of the applicable Part 1 or Part 2 of the Accomplishment
Instructions of RRD SB No. SB-BR700-72-900229, Revision 5, dated
January 8, 2003, or Revision 6, dated February 23, 2005 to do the
inspection.
(3) Thereafter, perform a visual and an ultrasonic inspection at
every A-Check but not to exceed 550 flight hours-since-the last
visual and ultrasonic inspection.
Engines With Fan Disc P/N BRR20791, BRR24829, or FW33929 Installed,
and Fan Blades P/N FW33513, FW33980, FW33925, FW34114, or FW34776
Installed
(l) For engines with fan disc P/N BRR20791, BRR24829, or FW33929
installed, and fan blades P/N FW33513, FW33980, FW33925, FW34114, or
FW34776 installed, initial and repetitive inspections are mandated
in RRD Time Limits Manual T-710-1BR, Chapter 05-10-01 (BR700-710A1-
10), and RRD Time Limits Manual T-710-2BR, Chapter 05-10-01 (BR700-
710A2-20).
Optional Terminating Action
(m) Installation of a new fan disc P/N FW33927, new fan blades,
P/N FW33513, or P/N FW33980, and N1 Keep Out Zone software with EEC
P/Ns 1501KDC02-010, or 1501KDC03-010, or 1501KDC05-010, or
1520KDC05-010, or 1520KDC05R-010, or 1520KDC07-010, or 1520KDC08-
010, is optional terminating action to any inspection required by
this AD.
Inspection Reporting Requirements
(n) Report defects in accordance with the applicable Part 1 or
Part 2 of RRD SB No. SB-BR700-72-900229, Revision 5, dated January
8, 2003; or Revision 6, dated February 23, 2005. Reporting
requirements have been approved by the Office of Management and
Budget (OMB) and assigned OMB control number 2120-0056.
Alternative Methods of Compliance
(o) The Manager, Engine 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
(p) LBA airworthiness directive 2000-348, Revision 6, dated
March 31, 2005, also addresses the subject of this AD.
Material Incorporated by Reference
(q) You must use Rolls-Royce Deutschland Ltd & Co KG Service
Bulletin No. SB-BR700-72-900229, Revision 5, dated January 8, 2003;
or Revision 6, dated February 23, 2005, to perform the actions
required by this AD. The Director of the Federal Register approved
the incorporation by reference of Revision 6 of this service
bulletin in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. The
Director of the Federal Register approved the incorporation by
reference of Revision 5 of this service bulletin as of April 28,
2003 (68 FR 17727, April 11, 2003). Contact Rolls-Royce Deutschland
Ltd & Co KG, Eschenweg 11, 15827 Blankenfelde-Mahlow, Germany,
telephone: 011 (0) 33-7086-1768, fax: 011 49 (0) 33-7086-3356, for a
copy of the service information. You can review copies at the FAA,
New England Region, Office of the Regional Counsel, 12 New England
Executive Park, Burlington, MA; or 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 Burlington, Massachusetts, on October 11, 2005.
Ann C. Mollica,
Acting Manager, Engine and Propeller Directorate, Aircraft
Certification Service.
[FR Doc. 05-20780 Filed 10-20-05; 8:45 am]
BILLING CODE 4910-13-P