|
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2018-0287; Product Identifier 2018-NE-10-AD; Amendment
39-19263; AD 2018-09-07]
RIN 2120-AA64
Airworthiness Directives; Rolls-Royce plc Turbojet Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule; request for comments.
-----------------------------------------------------------------------
SUMMARY: We are adopting a new airworthiness directive (AD) for
Rolls-
Royce plc (RR) Viper Mk. 601-22 turbojet engines. This AD requires
removing the oil pump assembly, part number (P/N) V112027, and oil
pressure filter, P/N V21264, from service and replacing them with parts
eligible for installation. This AD was prompted by a report of an
engine failure caused by installation of an incorrect oil filter. We
are issuing this AD to correct the unsafe condition on these products.
DATES: This AD is effective May 24, 2018.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of May 24,
2018.
We must receive comments on this AD by June 25, 2018.
ADDRESSES: You may send comments, using the procedures found in
14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the
instructions
for submitting comments.
Fax: 202-493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
Hand Delivery: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590, between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays.
For service information identified in this final rule, contact DA
Services Operations Room at Rolls-Royce plc, Defense Sector Bristol,
WH-70, P.O. Box 3, Filton, Bristol BS34 7QE, United Kingdom; phone: +44
(0) 117 97 90700; fax: +44 (0) 117 97 95498; email: defence-operations-
room@rolls-royce.com. You may view this service information at the FAA,
Engine & Propeller Standards Branch, 1200 District Avenue, Burlington,
MA 01803. For information on the availability of this material at the
FAA, call 781-238-7759. It is also available on the internet at http://www.
regulations.gov by searching for and locating Docket No. FAA-2018-0287.
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-2018-
0287; or in person at Docket Operations between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays. The AD docket contains
this final rule, the mandatory continuing airworthiness information
(MCAI), the regulatory evaluation, any comments received, and other
information. The street address for Docket Operations (phone: 800-647-
5527) is listed above. Comments will be available in the AD docket
shortly after receipt.
FOR FURTHER INFORMATION CONTACT: Robert Green, Aerospace Engineer,
ECO
Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781-
238-7754; fax: 781-238-7199; email: robert.green@faa.gov.
SUPPLEMENTARY INFORMATION:
Discussion
The European Aviation Safety Agency (EASA), which is the Technical
Agent for the Member States of the European Community, has issued EASA
AD 2017-0197, dated October 6, 2017 (referred to after this as the
MCAI), to address an unsafe condition for the specified products. The
MCAI states:
An engine mainline bearing failure occurred on a Viper Mk. 632-
43 engine because of debris being present in the engine oil system.
The debris entered the oil system through a damaged oil pressure
filter. Further investigation of this event revealed that, although
the oil pump assembly was of post-modification (mod) CV4559
standard, the oil pressure filter fitted on the oil pump assembly
was a pre-mod CV 4559 standard (Part Number (P/N) V21264). The
purpose of modification CV4559 is to replace the oil pressure filter
P/N V21264 with a more robust oil pressure filter (P/N 2526). Mod
CV4559 was introduced in service by R-R Service Bulletin (SB) 72-
198.
This condition, if not detected and corrected, could lead to an
engine mainline bearing failure, possibly resulting in a complete
loss of thrust and consequent reduced control of the aeroplane.
To address this potentially unsafe condition, R-R issued Alert
SB 72-A208, providing instructions to identify and replace pre-
modification oil filters.
For the reason described above, this [EASA] AD requires
replacement of all oil pressure filters P/N V21264 found to be
installed on post-mod CV4559 oil pump assemblies. This AD also
requires replacement of all pre-mod CV4559 oil pump assemblies (P/N
V112027) with post-mod oil pump assemblies (P/N V112225 or P/N
NPN11962).
You may obtain further information by examining the MCAI in the AD
docket on the internet at http://www.regulations.gov by searching for
and locating Docket No. FAA-2018-0287.
Related Service Information Under 1 CFR Part 51
We reviewed RR Alert Service Bulletin (ASB) Mk. 601-22 Number 72-
A208, dated September 2017. The ASB describes procedures for inspecting
and replacing a pre-modification oil pump assembly and oil pressure
filter with parts eligible for installation. This service information
is reasonably available because the interested parties have access to
it through their normal course of business or by the means identified
in the ADDRESSES section.
FAA's Determination
This product has been approved by EASA and is approved for
operation in the United States. Pursuant to our bilateral agreement
with the European Community, EASA has notified us of the unsafe
condition described in the MCAI and service information referenced
above. We are issuing this AD because we evaluated all the relevant
information provided by EASA and determined the unsafe condition
described previously is likely to exist or develop in other products of
the same type design.
AD Requirements
This AD requires inspecting the oil pump assembly and oil pressure
filter and replacing pre-modification parts with parts eligible for
installation.
FAA's Justification and Determination of the Effective Date
An unsafe condition exists that requires the immediate adoption of
this AD without providing an opportunity for public comments prior to
adoption. The FAA has found that the risk to the flying public
justifies waiving notice and comment prior to adoption of this rule
because the compliance time for the action is less than the time
required for public comment. EASA made a determination of an unsafe
condition warranting regulatory action and compliance within 25 flight
hours or 30 days. Therefore, we find good cause that notice and
opportunity for prior public comment are impracticable. In addition,
for the reason stated above, we find that good cause exists for making
this amendment effective in less than 30 days.
Comments Invited
This AD is a final rule that involves requirements affecting flight
safety and was not preceded by notice and an opportunity for public
comment. However, we invite you to send any written data, views, or
arguments about this final rule. Send your comments to an address
listed under the ADDRESSES section. Include the docket number FAA-2018-
0287 and Product Identifier 2018-NE-10-AD at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of this final rule. We will
consider all comments received by the closing date and may amend this
final rule because 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 we
receive about this final rule.
Costs of Compliance
We estimate that this AD affects 32 engines installed on airplanes
of U.S. registry.
We estimate the following costs to comply with this AD:
Estimated Costs
|
Action
|
Labor cost
|
Parts cost
|
Cost per
product
|
Cost on
U.S. operators
|
| Inspect and replace the oil filter |
3 work-hours x $85 per hour =
$255 |
$200
|
$455
|
$14,560
|
We estimate the following costs to
do any necessary replacements
that would be required based on the results of the proposed inspection.
We have no way of determining the number of aircraft that might need
this replacement.
On-Condition Costs
|
Action
|
Labor cost
|
Parts cost
|
Cost per
product
|
| Replace the oil pump assembly |
4 work-hours x $85 per hour =
$340 |
$200
|
$540
|
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.
This AD is issued in accordance with authority delegated by the
Executive Director, Aircraft Certification Service, as authorized by
FAA Order 8000.51C. In accordance with that order, issuance of ADs is
normally a function of the Compliance and Airworthiness Division, but
during this transition period, the Executive Director has delegated the
authority to issue ADs applicable to engines, propellers, and
associated appliances to the Manager, Engine and Propeller Standards
Branch, Policy and Innovation Division.
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 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),
(3) Will not affect intrastate aviation in Alaska, 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 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 (AD):
|