[Federal Register Volume 62, Number 65 (Friday, April 4, 1997)]
[Rules and Regulations]
[Pages 16066-16067]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 97-7977]
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DEPARTMENT OF TRANSPORTATION
14 CFR Part 39
[Docket No. 95-ANE-63; Amendment 39-9957; AD 97-05-13]
RIN 2120-AA64
Airworthiness Directives; CFM International CFM56-5 Series
Turbofan Engines
AGENCY: Federal Aviation Administration, DOT.
ACTION: Final rule.
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SUMMARY: This amendment adopts a new airworthiness directive (AD),
applicable to CFM International CFM56-5 series turbofan engines, that
requires rework of the air turbine engine starter. This amendment is
prompted by three reports of air turbine engine starter failures. The
actions specified by this AD are intended to prevent an air turbine
engine starter failure, which could result in damage to the engine
electrical harnesses.
DATES: Effective June 3, 1997.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of June 3, 1997.
ADDRESSES: The service information referenced in this AD may be
obtained from CFM International, Technical Publications Department, One
Neumann Way, Cincinnati, OH 45215; telephone (513) 552-2981, fax (513)
552-2816. This information may be examined at the Federal Aviation
Administration (FAA), New England Region, Office of the Assistant Chief
Counsel, 12 New England Executive Park, Burlington, MA; or at the
Office of the Federal Register, 800 North Capitol Street, NW., Suite
700, Washington, DC.
FOR FURTHER INFORMATION CONTACT: Glorianne Messemer, Aerospace
Engineer, Engine Certification Office, FAA, Engine and Propeller
Directorate, 12 New England Executive Park, Burlington, MA 01803-5299;
telephone (617) 238-7132; fax (617) 238-7199.
SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal
Aviation Regulations (14 CFR part 39) to include an airworthiness
directive (AD) that is applicable to CFM International (CFMI) CFM56-5
series turbofan engines was published in the Federal Register on April
15, 1996 (61 FR 16420). That action proposed to require rework of the
air turbine engine starter.
Interested persons have been afforded an opportunity to participate
in the making of this amendment. Due consideration has been given to
the comments received.
Two commenters support the rule as proposed.
Although no comments were received regarding the compliance end-
date stated in the compliance section of the proposed rule, the FAA has
revised the calendar end-date to July 31, 1997, based upon the
anticipated effective date of this AD.
After careful review of the available data, including the comments
noted above, the FAA has determined that air safety and the public
interest require the adoption of the rule with the change described
previously. The FAA has determined that this change will neither
increase the economic burden on any operator nor increase the scope of
the AD.
The FAA estimates that 190 engines installed on aircraft of U.S.
registry will be affected by this AD, that it will take approximately 2
work hours per engine to accomplish the required actions, and that the
average labor rate is $60 per work hour. Required parts will cost
approximately $2,400 per engine. Based on these figures, the total cost
impact of the AD on U.S. operators is estimated to be $478,800.
The regulations adopted herein will not have substantial direct
effects 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. Therefore, in
accordance with Executive Order 12612, it is determined that this final
rule does not have sufficient federalism implications to warrant the
preparation of a Federalism Assessment.
For the reasons discussed above, I certify that this action (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. A final evaluation has been prepared for this action
and it is contained in the Rules Docket. A copy of it may be obtained
from the Rules Docket at the location provided under the caption
ADDRESSES.
List of Subjects in 14 CFR Part 39
Air Transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
Accordingly, pursuant to the authority delegated to me by the
Administrator, the Federal Aviation
[[Page 16067]]
Administration 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. Section 39.13 is amended by adding the following new
airworthiness directive:
97-05-13 CFM International: Amendment 39-9957. Docket 95-ANE-63.
Applicability: CFM International (CFMI) CFM56-5 series turbofan
engines, installed with air turbine engine starter, Part Number 301-
781-201-0, installed on but not limited to Airbus A320 series
aircraft.
Note 1: This airworthiness directive (AD) applies to each engine
identified in the preceding applicability provision, regardless of
whether it has been modified, altered, or repaired in the area
subject to the requirements of this AD. For engines that have been
modified, altered, or repaired so that the performance of the
requirements of this AD is affected, the owner/operator must request
approval for an alternative method of compliance in accordance with
paragraph (b) of this AD. The request should include an assessment
of the effect of the modification, alteration, or repair on the
unsafe condition addressed by this AD; and, if the unsafe condition
has not been eliminated, the request should include specific
proposed actions to address it.
Compliance: Required on or before July 31, 1997, unless
accomplished previously.
To prevent an air turbine engine starter failure, which could
result in damage to the engine electrical harnesses, accomplish the
following:
(a) For air turbine engine starters, Part Number 301-781-201-0,
that have not been previously reworked in accordance with any
revision level of CFMI CFM56-5 Service Bulletin (SB) No. 80-003,
rework the air turbine engine starter in accordance with the
Accomplishment Instructions of CFMI CFM56-5 SB No. 80-003, Revision
5, dated October 25, 1994.
(b) An alternative method of compliance or adjustment of the
compliance time that provides an acceptable level of safety may be
used if approved by the Manager, Engine Certification Office. The
request should be forwarded through an appropriate FAA Principal
Maintenance Inspector, who may add comments and then send it to the
Manager, Engine Certification Office.
Note 2: Information concerning the existence of approved
alternative methods of compliance with this airworthiness directive,
if any, may be obtained from the Engine Certification Office.
(c) Special flight permits may be issued in accordance with
sections 21.197 and 21.199 of the Federal Aviation Regulations (14
CFR 21.197 and 21.199) to operate the aircraft to a location where
the requirements of this AD can be accomplished.
(d) The actions required by this AD shall be done in accordance
with the following CFMI SB:
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Document No. Pages Revision Date
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CFM56-5 SB No. 80-003.................... 1-3 5.......................... October 25, 1994.
4-13 Original................... July 16, 1991.
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Total Pages: 13.
This incorporation by reference was approved by the Director of the
Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51.
Copies may be obtained from CFM International, Technical Publications
Department, One Neumann Way, Cincinnati, OH 45215; telephone (513)552-
2981, fax (513)552-2816. Copies may be inspected at the FAA, New
England Region, Office of the Assistant Chief Counsel, 12 New England
Executive Park, Burlington, MA; or at the Office of the Federal
Register, 800 North Capitol Street NW., Suite 700, Washington, DC.
(e) This amendment becomes effective on June 3, 1997.
Issued in Burlington, Massachusetts, on February 24, 1997.
James C. Jones,
Acting Manager, Engine and Propeller Directorate, Aircraft
Certification Service.
[FR Doc. 97-7977 Filed 4-3-97; 8:45 am]
BILLING CODE 4910-13-U
