[Federal Register: June 14, 2005 (Volume 70, Number 113)]
[Rules and Regulations]
[Page 34336-34339]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr14jn05-10]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 93-ANE-07-AD; Amendment 39-14122; AD 2005-12-06]
RIN 2120-AA64
Airworthiness Directives; Teledyne Continental Motors (Formerly
Bendix) S-20, S-1200, D-2000, and D-3000 Series Magnetos
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: The FAA is superseding an existing airworthiness directive
(AD) for Teledyne Continental Motors (TCM) (formerly Bendix) S-20, S-
1200, D-2000, and D-3000 series magnetos equipped with impulse coupling
assemblies. That AD currently requires replacing riveted-impulse
coupling assemblies and snap-ring coupling assemblies, which are worn
beyond limits, with serviceable riveted-impulse coupling assemblies or
snap-ring impulse coupling assemblies. This ad requires a reduced
inspection interval for magnetos with riveted-impulse coupling
assemblies installed on certain Lycoming engine models. This AD does
not lower the inspection interval for magnetos with snap-ring impulse
coupling assemblies. This AD also limits the applicability to certain
Lycoming engine models. This AD results from data provided by the
manufacturer that shows a need to reduce the inspection intervals for
riveted-impulse coupling assemblies used on certain Lycoming engine
models. We are issuing this AD to prevent failure of the magneto
impulse coupling assembly and possible engine failure.
DATES: This AD becomes effective July 19, 2005. The Director of the
Federal Register previously approved the incorporation by reference of
certain publications as listed in the regulations as of July 18, 1996
(61 FR 29934, June 13, 1996).
ADDRESSES: You can get the service information identified in this AD
from Teledyne Continental Motors, P.O. Box 90, Mobile, AL 36601;
telephone (334) 438-3411. For the Teledyne Continental Motors Web site:
Go to http://www.TCMLINK.com.
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; 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/code_of_federal_regulations/ibr_locations.html
.
FOR FURTHER INFORMATION CONTACT: Jerry Robinette, Senior Aerospace
Engineer, Propulsion, Atlanta Aircraft Certification Office, FAA, Small
Airplane Directorate, 1 Crown Center, 1895 Phoenix Blvd., Suite 450,
Atlanta, GA, 30349; telephone (770) 703-6096, fax (770) 703-6097.
SUPPLEMENTARY INFORMATION: The FAA proposed to amend 14 CFR part 39
with a proposed airworthiness directive (AD). The proposed AD applies
to TCM S-20, S-1200, D-2000, and D-3000 series magnetos equipped with
impulse coupling assemblies. We published the proposed AD in the
Federal Register on December 22, 2004 (69 FR 76632). That action
proposed to require:
An initial visual inspection of riveted-impulse coupling
assemblies that have 100 or more hours time-since-new (TSN) or time-
since-last-inspection (TSLI) on the effective date of the proposed AD,
within 10 hours time-in-service (TIS) after the effective date of this
AD, or
An initial visual inspection of riveted-impulse coupling
assemblies that have fewer than 100 hours TSN or TSLI on the effective
date of the proposed AD, before accumulating 100 hours TSN or TSLI, and
Repetitive inspections of riveted-impulse coupling
assemblies within intervals of 100 hours TSLI.
An initial visual inspection of snap-ring impulse coupling
assemblies that have 450 or more hours TSN or TSLI on the effective
date of the proposed AD, within 50 hours TIS after the effective date
of the AD, or
An initial visual inspection of snap-ring impulse coupling
assemblies that have fewer than 450 hours TSN or TSLI before
accumulating 500 hours TSN or TSLI, and
Repetitive inspections of snap-ring impulse coupling
assemblies within intervals of 500 hours TSLI.
Replacing impulse coupling assemblies that fail the
inspection.
Examining the AD Docket
You may examine the AD Docket (including any comments and service
information), by appointment, between
[[Page 34337]]
8 a.m. and 4:30 p.m., Monday through Friday, except Federal holidays.
See ADDRESSES for the location.
Comments
We provided the public the opportunity to participate in the
development of this AD. We have considered the comments received.
Request To Not Change the Eligibility From the Current AD
One commenter requests that we not change the eligibility from the
current AD. The commenter states that experience has shown that the
current AD is preventing failures and there is no difference between
the wear or reliability of the impulse coupling assemblies installed on
one make and model of engine, or another.
We do not agree. Responses we received to the Airworthiness Concern
Sheet and Special Airworthiness Information Bulletin from owners and
operators, and the manufacturer's data, indicate that there is a
significant difference in the wear and reliability of magnetos
installed on Lycoming 540 series engines as compared with other
engines. Based on these responses, we have appropriately reduced the
inspection interval for magnetos with riveted-impulse coupling
assemblies installed on Lycoming 540 series engines.
Request To Not Change From the Current AD
One commenter states that without the current AD, owners and
operators will not have the manufacturer's recommended maintenance
performed, and safety will suffer.
We do not agree. While a small percentage of operators may not
voluntarily comply with the manufacturer's recommended maintenance, we
anticipate virtually all will comply. The response to the Airworthiness
Concern Sheet, Special Airworthiness Information Bulletin, and
manufacturer's data, indicates the AD is only needed for the Lycoming
540 series engines. This action does not negate the 500-hour inspection
recommended by TCM. That inspection is part of the total inspection
program to ensure the continued airworthiness of the engine. Therefore,
we anticipate that safety will not suffer.
Addition of Description of Magneto Model Numbering System
To assist owners and operators, we have added the description of
the magneto numbering system used for TCM S-20, S-1200, D-2000, and D-
3000 series magnetos to the compliance section of 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
We estimate that this AD will affect about 4,200 magnetos installed
on airplanes of U.S. registry. We also estimate that it will take about
1 work hour per magneto to perform the actions, and that the average
labor rate is $65 per work hour. The reduced inspection interval will
require doing the inspections about four times more often. Based on
these figures, we estimate the total cost of the AD to U.S. operators
to be $1,092,000.
Special Flight Permits Paragraph Removed
Paragraph (d) of the current AD, AD 96-12-07, contains a paragraph
pertaining to special flight permits. Even though this final rule does
not contain a similar paragraph, we have made no changes with regard to
the use of special flight permits to operate the airplane to a repair
facility to do the work required by this AD. In July 2002, we published
a new 14 CFR part 39 that contains a general authority regarding
special flight permits and airworthiness directives; see Docket No.
FAA-2004-8460, Amendment 39-9474 (69 FR 47998, July 22, 2002). Thus,
when we now supersede ADs we will not include a specific paragraph on
special flight permits unless we want to limit the use of that general
authority granted in section 39.23.
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.
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. 93-ANE-07-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 39-9649 (61 FR
29934, June 13, 1996) and by adding a new airworthiness directive,
Amendment 39-14122, to read as follows:
2005-12-06 Teledyne Continental Motors: Amendment 39-14122. Docket
No. 93-ANE-07-AD.
Effective Date
(a) This AD becomes effective July 19, 2005.
[[Page 34338]]
Affected ADs
(b) This AD supersedes AD 96-12-07, Amendment 39-9649.
Applicability: (c) This AD applies to Teledyne Continental
Motors (TCM) (formerly Bendix) magnetos that have a magneto part
number (P/N) listed in Table 1 of TCM Mandatory Service Bulletin
(MSB) No. MSB645, dated April 4, 1994, installed on Lycoming AEIO-
540, HIO-540, IO-540, 0-540, and TIO-540 series engines. These
engines are installed on, but not limited to, airplanes manufactured
by the Cessna Aircraft Company, Maule Aerospace Technology
Corporation, Mooney Aircraft Corporation, The New Piper Aircraft
Inc., and Raytheon Aircraft Company (Formerly Beech Aircraft
Company).
Unsafe Condition
(d) This AD results from data provided by the manufacturer that
indicates a need to reduce the inspection intervals for riveted-
impulse coupling assemblies used on certain Lycoming engine models.
We are issuing this AD to prevent failure of the magneto impulse
coupling assembly and possible engine failure.
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 Inspections of Impulse Coupling Assemblies
(f) For all magnetos that have a P/N listed in Table 1 of TCM
MSB No. MSB645, dated April 4, 1994, that have never been inspected,
perform an initial inspection of the impulse coupling assembly for
wear using paragraphs 1.2 through 1.4.5 of the Detailed Instructions
of TCM MSB No. MSB645, dated April 4, 1994. Use the following Table
1 for the compliance times. Snap-ring impulse coupling assemblies
will have an ``A'' stamped in the lower-right quarter of the magneto
data plate.
Table 1.--Initial Inspection Compliance Times
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Time on impulse
Type of impulse coupling assembly on
Engine Model coupling assembly the effective date of Inspect
this AD
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Lycoming AEIO-540, HIO-540, IO-540, 0- (1) Riveted............ (i) 100 or more hours Within 10 hours time-in-
540, and TIO-540 series engines. time-since-new or service (TIS) after
overhaul (TSN) or if the effective date of
the TSN is unknown. this AD.
(ii) Fewer than 100 Before accumulating 100
hours TSN. hours TSN.
(2) Snap ring.......... (i) 450 or more hours Within 50 hours TIS
TSN. after the effective
(ii) Fewer than 450 date of this AD.
hours TSN. Before accumulating 500
hours TSN.
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(g) Replace any impulse coupling assembly that fails the
inspection with a serviceable riveted or snap-ring impulse coupling
assembly. Paragraphs 2 through 2.6 of the Detailed Instructions of
TCM MSB No. MSB645, dated April 4, 1994 contain information on
replacing the impulse coupling assembly.
(h) If you replace a snap-ring impulse coupling assembly with a
riveted-impulse coupling assembly, strike out the ``A'' on the
magneto data plate.
Repetitive Inspections of Impulse Coupling Assemblies
(i) For all magnetos that have a P/N listed in Table 1 of TCM
MSB No. MSB645, dated April 4, 1994, that have had an initial
inspection as specified in paragraph (f) of this AD, perform
repetitive inspections of the impulse coupling assembly for wear
using paragraphs 1.2 through 1.4.5 of the Detailed Instructions of
TCM MSB No. MSB645, dated April 4, 1994. Use the following Table 2
for the compliance times. Snap-ring impulse coupling assemblies will
have an ``A'' stamped in the lower-right quarter of the magneto data
plate.
Table 2.--Repetitive Inspection Compliance Times
------------------------------------------------------------------------
Type of impulse
Engine model coupling assembly Inspect
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Lycoming AEIO-540, HIO-540, IO- (1) Riveted...... Within 100 hours time-
540, 0-540, and TIO-540 (2) Snap ring.... since-last
series engines.. inspection (TSLI).
Within 500 hours
TSLI.
------------------------------------------------------------------------
(j) Replace any impulse coupling assembly that fails the
inspection with a serviceable riveted or snap-ring impulse coupling
assembly. Paragraphs 2 through 2.6 of the Detailed Instructions of
TCM MSB No. MSB645, dated April 4, 1994 contain information on
replacing the impulse coupling assembly.
(k) If you replace a snap-ring impulse coupling assembly with a
riveted-impulse coupling assembly, strike out the ``A'' on the
magneto data plate.
Optional Terminating Action
(l) Installing a ``Shower-of-Sparks'' ignition system in place
of a magneto system that has a riveted-impulse coupling assembly or
a snap-ring impulse coupling assembly ends the repetitive inspection
requirements specified in paragraph (i) of this AD. You can find
more information on installing a ``Shower-of-Sparks'' ignition
system in TCM Service Information Letter No. SIL648, dated October
18, 1994.
Description of Magneto Model Numbering System
(m) To assist owners and operators, the description of the
magneto numbering system used for TCM S-20, S-1200, D-2000, and D-
3000 series magnetos is in the following Table 3:
Table 3.--Magneto Numbering System
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Code: Signifies:
------------------------------------------------------------------------
S or D............................ Ignition Type (Single or Dual)
6................................. Number of Cylinders
L or R............................ Direction of Rotation (Left-hand or
Right-hand)
N (Not used on SC Models)......... Manufacturer Designation
[[Page 34339]]
SC (if applicable)................ Short Cover Configuration
-25, -1209, or -3200.............. Magneto Series
-----------------------------------
Examples: Description:
-----------------------------------
S6LN-1209......................... Single type ignition, 6-cyclinder
engine, left-hand rotation, TCM
(formerly Bendix), S-1200 series
D6RN-3200......................... Dual type ignition, 6-cylinder
engine, right-hand rotation, TCM
(formerly Bendix), D-3000 series
S6LSC-25.......................... Single type ignition, 6-cylinder
engine, left-hand rotation, short
cover configuration, S-20 series
------------------------------------------------------------------------
Alternative Methods of Compliance
(n) The Manager, Atlanta Aircraft 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
(o) TCM SB No. 639, dated March 1993, contains additional
information for replacing impulse coupling assemblies on a TCM
magneto. TCM Service Information Letter No. SIL648, dated October
18, 1994, contains information for converting an engine to a
``Shower-of-Sparks'' ignition system.
Material Incorporated by Reference
(p) You must use Teledyne Continental Motors Mandatory Service
Bulletin No. MSB645, dated April 4, 1994 to perform the inspections
and replacements required by this AD. The Director of the Federal
Register approved the incorporation by reference of this service
bulletin as of July 18, 1996 (61 FR 29934, June 13, 1996). You can
get a copy from Teledyne Continental Motors, P.O. Box 90, Mobile, AL
36601; telephone (334) 438-3411. For the Teledyne Continental Motors
Web site: Go to http://www.TCMLINK.com. 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/code--of-- federal--
regulations/ ibr--locations.html.
Issued in Burlington, Massachusetts, on June 6, 2005.
Jay J. Pardee,
Manager, Engine and Propeller Directorate, Aircraft Certification
Service.
[FR Doc. 05-11610 Filed 6-13-05; 8:45 am]
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