Airworthiness Directives; Teledyne Continental Motors GTSIO-520 Series Reciprocating Engines, 62570-62572 [E6-17935]
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Federal Register / Vol. 71, No. 207 / Thursday, October 26, 2006 / Proposed Rules
located on the E2–6 shelf of the main
equipment center with a new or modified
EIU, P/N 622–8589–105, in accordance with
the Accomplishment Instructions of Boeing
Service Bulletin 747–31–2368, Revision 1,
dated July 24, 2006.
Note 1: Boeing Service Bulletin 747–31–
2368, Revision 1, dated July 24, 2006, refers
to Rockwell Collins Service Bulletin EIU–
7000–31–502, dated March 21, 2006, as an
additional source of service information for
modifying an EIU by adding auto restart
circuitry, which converts EIU P/N 622–8589–
104 to P/N 622–8589–105.
Credit for Previous Service Bulletin
(g) Actions done before the effective date
of this AD in accordance with Boeing Service
Bulletin 747–31–2368, dated November 22,
2005 (Revision 1 of the service bulletin
specifies that the original issue is dated
December 1, 2005), are acceptable for
compliance with the corresponding
requirements of paragraph (f) of this AD.
Credit for AD 2004–10–05
(h) Replacing all three EIUs with new or
modified EIUs in accordance with paragraph
(f) of this AD is acceptable for compliance
with only the EIU replacement of paragraph
(d)(1) of AD 2004–10–05. All other actions
required by paragraph (d)(1) of AD 2004–10–
05 must be complied with.
Alternative Methods of Compliance
(AMOCs)
(i)(1) The Manager, Seattle Aircraft
Certification Office, FAA, has the authority to
approve AMOCs for this AD, if requested in
accordance with the procedures found in 14
CFR 39.19.
(2) Before using any AMOC approved in
accordance with § 39.19 on any airplane to
which the AMOC applies, notify the
appropriate principal inspector in the FAA
Flight Standards Certificate Holding District
Office.
Issued in Renton, Washington, on October
13, 2006.
Kalene C. Yanamura,
Acting Manager, Transport Airplane
Directorate, Aircraft Certification Service.
[FR Doc. E6–17655 Filed 10–25–06; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2005–20850; Directorate
Identifier 2005–NE–05–AD]
ycherry on PROD1PC64 with PROPOSALS
RIN 2120–AA64
Airworthiness Directives; Teledyne
Continental Motors GTSIO–520 Series
Reciprocating Engines
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
AGENCY:
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15:19 Oct 25, 2006
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Notice of proposed rulemaking
(NPRM).
ACTION:
The FAA proposes to
supersede an existing airworthiness
directive (AD) for Teledyne Continental
Motors (TCM) GTSIO–520 series
reciprocating engines. That AD
currently requires initial and repetitive
visual inspections of the starter adapter
assembly and crankshaft gear and
unscheduled visual inspections of the
starter adapter assembly and crankshaft
gear due to a rough-running engine.
That AD also requires replacement of
the starter adapter shaft gear needle
bearing with a certain bushing and
installation of a certain TCM service kit
at the next engine overhaul, or at the
next starter adapter replacement,
whichever occurs first. This proposed
AD would require the inspection
ordered in paragraph (h) of AD 2005–
20–04 to be done every 100 hours timein-service (TIS), or annually. This
proposed AD results from an error
discovered in AD 2005–20–04. We are
proposing this AD to prevent failure of
the starter adapter assembly and or
crankshaft gear, resulting in failure of
the engine and possible forced landing.
DATES: We must receive any comments
on this proposed AD by December 26,
2006.
ADDRESSES: Use one of the following
addresses to comment on this proposed
AD.
• DOT Docket Web site: Go to
https://dms.dot.gov and follow the
instructions for sending your comments
electronically.
• Government-wide rulemaking Web
site: Go to https://www.regulations.gov
and follow the instructions for sending
your comments electronically.
• Mail: Docket Management Facility;
U.S. Department of Transportation, 400
Seventh Street, SW., Nassif Building,
Room PL–401, Washington, DC 20590–
0001.
• Fax: (202) 493–2251.
• Hand Delivery: Room PL–401 on
the plaza level of the Nassif Building,
400 Seventh Street, SW., Washington,
DC, between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays.
You can get the service information
identified in this proposed AD from
Teledyne Continental Motors, Inc., PO
Box 90, Mobile, AL 36601; telephone
(251) 438–3411.
FOR FURTHER INFORMATION CONTACT: Jerry
Robinette, Senior Engineer, Propulsion,
Atlanta Aircraft Certification Office,
FAA, Small Airplane Directorate, One
Crown Center, 1895 Phoenix Blvd.,
Suite 450, Atlanta, GA 30349;
telephone: (770) 703–6096, fax: (770)
703–6097.
SUMMARY:
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SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written
relevant data, views, or arguments
regarding this proposal. Send your
comments to an address listed under
ADDRESSES. Include ‘‘Docket No. FAA–
2005–20850; Directorate Identifier
2005–NE–05–AD’’ in the subject line of
your comments. We specifically invite
comments on the overall regulatory,
economic, environmental, and energy
aspects of the proposed AD. We will
consider all comments received by the
closing date and may amend the
proposed AD in light of those
comments.
We will post all comments we
receive, without change, to https://
dms.dot.gov, including any personal
information you provide. We will also
post a report summarizing each
substantive verbal contact with FAA
personnel concerning this proposed AD.
Using the search function of the DMS
Web site, anyone can find and read the
comments in any of our dockets,
including the name of the individual
who sent the comment (or signed the
comment on behalf of an association,
business, labor union, etc.). You may
review the DOT’s complete Privacy Act
Statement in the Federal Register
published on April 11, 2000 (65 FR
19477–78) or you may visit https://
dms.dot.gov.
Examining the AD Docket
You may examine the docket that
contains the proposal, any comments
received and any final disposition in
person at the DMS Docket Offices
between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays.
The Docket Office (telephone (800) 647–
5227) is located on the plaza level of the
Department of Transportation Nassif
Building at the street address stated in
ADDRESSES. Comments will be available
in the AD docket shortly after the DMS
receives them.
Discussion
On September 20, 2005, the FAA
issued AD 2005–20–04, Amendment
39–14297 (70 FR 56355, September 27,
2005). That AD requires initial and
repetitive visual inspections of the
starter adapter assembly and crankshaft
gear and unscheduled visual
inspections of the starter adapter
assembly and crankshaft gear due to a
rough-running engine. That AD also
requires replacement of the starter
adapter shaft gear needle bearing with a
certain bushing and installation of a
certain TCM service kit at the next
engine overhaul, or at the next starter
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Federal Register / Vol. 71, No. 207 / Thursday, October 26, 2006 / Proposed Rules
adapter replacement, whichever occurs
first. That AD resulted from six service
difficulty reports and one fatal accident
report that related to failed starter
adapter assemblies.
Actions Since AD 2005–20–04 Was
Issued
Since we issued that AD, we
discovered an error in paragraph (h). In
that paragraph, we specify an inspection
at the next 100-hour or annual
inspection, whichever occurs first.
However, because most of the airplanes
are privately owned and operate under
14 CFR part 91, they are not required to
perform 100-hour inspections. This
proposed AD would correct that error
and require the inspections every 100
hours TIS, instead of at the next 100hour inspection.
Also, since we issued AD 2005–20–
04, TCM revised the mandatory service
bulletin required by this AD. It is now
identified as Mandatory Service Bulletin
(MSB) No. MSB94–4G, dated October
31, 2005, and includes a service kit with
new, rather than rebuilt parts.
Relevant Service Information
We have reviewed and approved the
technical contents of Teledyne
Continental Aircraft Engine, MSB94–4G,
dated October 31, 2005 that provides
inspection and replacement procedures
for the starter adapter assembly and
crankshaft gear. That MSB also
describes procedures for replacement of
the needle bearing, part number (P/N)
537721, with P/N 654472. That MSB
also describes procedures for
installation of TCM service kits EQ6642
(new) or EQ6642R (rebuilt).
ycherry on PROD1PC64 with PROPOSALS
Differences Between the Proposed AD
and the Service Information
Although TCM MSB No. MSB94–4G,
dated October 31, 2005, applies to GIO–
550 and GTSIO–520 series reciprocating
engines, this proposed AD would only
apply to GTSIO–520 series reciprocating
engines. Also, although that MSB
mandates in Part 1, that magnetos must
be overhauled and periodically
inspected at specified times, this
proposed AD would not mandate those
actions.
FAA’s Determination and Requirements
of the Proposed AD
We have evaluated all pertinent
information and identified an unsafe
condition that is likely to exist or
develop on other products of this same
type design. For that reason, we are
proposing this AD, which would
require:
• Initial and repetitive visual
inspections of the starter adapter
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15:19 Oct 25, 2006
Jkt 211001
assembly and crankshaft gear, and
replacement of components as
necessary.
• Unscheduled visual inspections of
the starter adapter assembly and
crankshaft gear due to a rough-running
engine, and replacement of components
as necessary.
• Replacement of the starter adapter
shaft gear needle bearing, P/N 537721
with bushing, P/N 654472.
• Inspection and replacement of
components specified in Part 2 of the
MSB as necessary every 100 hours TIS
or annually, whichever occurs first.
• Inspection of starter adapters with
more or less than 400 hours TIS or
unknown TIS.
• Installation of TCM service kit, P/N
EQ6642 or P/N EQ6642R, at next engine
overhaul, or at next starter adapter
replacement, whichever occurs first.
The proposed AD would require you
to use the service information described
previously to perform the inspections
and replacements.
Costs of Compliance
We estimate that this AD will affect
4,240 engines installed on airplanes of
U.S. registry. We also estimate that it
would take about one work-hour per
engine to perform the inspection, about
one work-hour per engine to perform
the proposed bushing installation and
about six work-hours per engine to
install the TCM service kit. The average
labor rate is $80 per work-hour. We
estimate that about 25 percent of the
engines will require an unscheduled
(rough-running engine) inspection and
about half of the engines will require the
bushing and TCM service kit. Required
bushings would cost about $16 per
engine and service kits about $800 per
engine. Based on these figures, we
estimate the total cost of the proposed
AD to U.S. operators to be $6,393,432.
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
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62571
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
proposed AD would not have federalism
implications under Executive Order
13132. This proposed AD would 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 the proposed regulation:
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. Would 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 proposed AD. See the ADDRESSES
section for a location to examine the
regulatory evaluation.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Safety.
The Proposed Amendment
Under the authority delegated to me
by the Administrator, the Federal
Aviation Administration proposes to
amend 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.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by
removing Amendment 39–14297 (70 FR
56355, September 27, 2005) and by
adding a new airworthiness directive,
Amendment 39–XXXXX, to read as
follows:
Teledyne Continental Motors: Docket No.
FAA–2005–20850; Directorate Identifier
2005–NE–05–AD.
Comments Due Date
(a) The Federal Aviation Administration
(FAA) must receive comments on this
airworthiness directive (AD) action by
December 26, 2006.
Affected ADs
(b) This AD supersedes AD 2005–20–04,
Amendment 39–14297.
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Federal Register / Vol. 71, No. 207 / Thursday, October 26, 2006 / Proposed Rules
Applicability
(c) This AD applies to Teledyne
Continental Motors (TCM) GTSIO–520 series
reciprocating engines. These engines are
installed on, but not limited to, Twin
Commander (formerly Aero Commander)
model 685, Cessna model 404, 411 series,
and 421 series, British Aerospace, Aircraft
Group, Scottish Division model B.206 series
2 and Aeronautica Macchi model AM–3
airplanes.
Unsafe Condition
(d) This AD results from an error
discovered in AD 2005–20–04. We are
issuing this AD to prevent failure of the
starter adapter assembly and or crankshaft
gear, resulting in failure of the engine and
possible forced landing.
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.
Starter Adapter Shaft Gear Needle Bearing
Replacement
(f) If, during an inspection required by
paragraph (g), (h), (i), or (j) of this AD, you
find needle bearing, part number (P/N)
537721, installed in the crankcase, replace it
with a serviceable bushing, before
reassembling components. Use the bushing
installation procedure specified in Part 4 of
TCM Mandatory Service Bulletin (MSB) No.
MSB94–4G, dated October 31, 2005.
ycherry on PROD1PC64 with PROPOSALS
Unscheduled Inspections for Rough-Running
Engines
(g) For any engine that experiences rough
running conditions regardless of time-inservice (TIS), do the following:
(1) Before further flight, perform the
inspection procedures specified in Part 1 and
Part 3 of TCM MSB No. MSB94–4G, dated
October 31, 2005, and replace components as
necessary.
(2) An engine is considered rough-running
if there is a sudden increase in the perceived
vibration levels that cannot be cleared by
adjustment of the engine controls;
particularly the fuel mixture setting.
Information on rough running engines can be
found in the aircraft manufacturer’s Airplane
Flight Manual, Pilot’s Operating Handbook,
or Aircraft Owners Manual.
100-Hour and Annual Inspections
(h) For any engine that has been inspected
using paragraph (h) of AD 2005–20–04 and
the 100-hour inspection procedures or 100
hour TIS intervals or annual inspection
procedures, continue the inspections as
follows:
(1) Perform the inspection procedures
specified in Part 2 of TCM MSB No. MSB94–
4G, dated October 31, 2005 and replace
components as necessary at each 100 hour
TIS interval (plus or minus 10 hours TIS) or
annual inspection, whichever occurs first.
(2) Thereafter, at each 100 hour TIS
interval (plus or minus 10 hours TIS) perform
repetitive inspections and component
replacements as specified in paragraph (h)(1)
of this AD.
VerDate Aug<31>2005
15:19 Oct 25, 2006
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(i) For any engine that has not been
inspected using paragraph (h) of AD 2005–
20–04, within 25 hours TIS or at the annual
inspection, whichever occurs first, do the
following:
(1) Perform the inspection procedures
specified in Part 2 of TCM MSB No. MSB94–
4G, dated October 31, 2005 and replace
components as necessary.
(2) Thereafter, at each 100-hour TIS
interval (plus or minus 10 hours TIS) perform
repetitive inspections and component
replacements as specified in paragraph (i)(1)
of this AD.
(3) If the inspection is performed at more
than 100 hour intervals, subtract the
additional hours from the next scheduled 100
hour inspection.
Starter Adapters With 400 Hours or More
Time-In-Service (TIS) or Unknown TIS
(j) For any starter adapter with 400 hours
or more TIS or unknown TIS on the effective
date of this AD, do the following:
(1) Within 25 hours TIS, perform the
inspection procedures specified in Part 3 of
TCM MSB No. MSB94–4G, dated October 31,
2005, and replace components as necessary.
(2) Thereafter, at 400-hour TIS intervals,
(plus or minus 10 hours TIS), perform
repetitive inspections and component
replacements specified in Part 3 of TCM MSB
No. MSB94–4G, dated October 31, 2005, and
replace components as necessary.
Starter Adapters With Fewer Than 400
Hours TIS
(k) For any starter adapter with fewer than
400 hours TIS on the effective date of this
AD, do the following:
(1) Upon accumulation of 400 hours TIS,
(plus or minus 10 hours TIS), perform the
inspection procedures specified in Part 3 of
TCM MSB No. MSB94–4G, dated October 31,
2005, and replace components as necessary.
(2) Thereafter, at 400-hour TIS intervals,
(plus or minus 10 hours TIS), perform
repetitive inspections and component
replacements, as specified in Part 3 of TCM
MSB No. MSB94–4G, dated October 31, 2005,
and replace components as necessary.
Installation of TCM Service Kit, EQ6642 or
EQ6642R
(l) At the next engine overhaul or starter
adapter replacement after the effective date of
this AD, whichever occurs first, do the
following:
(1) Install TCM service kit, P/N EQ6642
(new) or EQ6642R (rebuilt). Use the service
kit installation procedures specified in Part 5
of TCM MSB No. MSB94–4G, dated October
31, 2005.
(2) Continue performing the inspections
and component replacements specified in
paragraphs (g), (h), (i), (j) and (k) of this AD.
Prohibition of Special Flight Permits for
Rough-Running Engines
(m) Special flight permits are prohibited
for rough-running engines described in
paragraph (g)(2) of this AD.
Alternative Methods of Compliance
(AMOCs)
(n) The Manager, Atlanta Aircraft
Certification Office, FAA, has the authority to
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approve alternative methods of compliance
for this AD if requested using the procedures
found in 14 CFR 39.19.
Related Information
(o) None.
Issued in Burlington, Massachusetts, on
October 18, 2006.
Thomas A. Boudreau,
Acting Manager, Engine and Propeller
Directorate, Aircraft Certification Service.
[FR Doc. E6–17935 Filed 10–25–06; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF LABOR
Mine Safety and Health Administration
30 CFR Part 100
RIN 1219–AB51
Criteria and Procedures for Proposed
Assessment of Civil Penalties
Mine Safety and Health
Administration, Labor.
ACTION: Reopening of comment period.
AGENCY:
SUMMARY: The Mine Safety and Health
Administration (MSHA) is reopening
the comment period to the proposed
rule amending the criteria and
procedures for proposed assessment of
civil penalties. The proposed rule was
published on September 8, 2006.
DATES: The comment period will close
on November 9, 2006.
ADDRESSES: Identify all comments by
‘‘RIN: 1219–AB51’’ and send them to
MSHA as follows:
(1) Electronically through the Federal
e-Rulemaking portal at https://
www.regulations.gov (Follow the online
instructions for submitting comments)
or by e-mail to zzMSHAcomments@dol.gov.
(2) By facsimile to 202–693–9441.
(3) By regular mail to MSHA, Office
of Standards, Regulations, and
Variances, 1100 Wilson Boulevard,
Room 2350, Arlington, Virginia 22209–
3939.
(4) By hand delivery to MSHA, 1100
Wilson Boulevard, 21st Floor,
Arlington, Virginia. Leave the package
at the receptionist’s desk.
FOR FURTHER INFORMATION CONTACT:
Patricia W. Silvey at 202–693–9440
(Voice), 202–693–9441 (Facsimile), or
silvey.patricia@dol.gov (E-mail).
SUPPLEMENTARY INFORMATION: On
September 8, 2006 (71 FR 53054),
MSHA published a proposed rule
amending its civil penalty regulations.
The proposed rule would increase
penalty amounts, implement new
requirements of the Mine Improvement
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]]>Agencies
[Federal Register Volume 71, Number 207 (Thursday, October 26, 2006)]
[Proposed Rules]
[Pages 62570-62572]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E6-17935]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2005-20850; Directorate Identifier 2005-NE-05-AD]
RIN 2120-AA64
Airworthiness Directives; Teledyne Continental Motors GTSIO-520
Series Reciprocating Engines
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: The FAA proposes to supersede an existing airworthiness
directive (AD) for Teledyne Continental Motors (TCM) GTSIO-520 series
reciprocating engines. That AD currently requires initial and
repetitive visual inspections of the starter adapter assembly and
crankshaft gear and unscheduled visual inspections of the starter
adapter assembly and crankshaft gear due to a rough-running engine.
That AD also requires replacement of the starter adapter shaft gear
needle bearing with a certain bushing and installation of a certain TCM
service kit at the next engine overhaul, or at the next starter adapter
replacement, whichever occurs first. This proposed AD would require the
inspection ordered in paragraph (h) of AD 2005-20-04 to be done every
100 hours time-in-service (TIS), or annually. This proposed AD results
from an error discovered in AD 2005-20-04. We are proposing this AD to
prevent failure of the starter adapter assembly and or crankshaft gear,
resulting in failure of the engine and possible forced landing.
DATES: We must receive any comments on this proposed AD by December 26,
2006.
ADDRESSES: Use one of the following addresses to comment on this
proposed AD.
DOT Docket Web site: Go to https://dms.dot.gov and follow
the instructions for sending your comments electronically.
Government-wide rulemaking Web site: Go to https://
www.regulations.gov and follow the instructions for sending your
comments electronically.
Mail: Docket Management Facility; U.S. Department of
Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401,
Washington, DC 20590-0001.
Fax: (202) 493-2251.
Hand Delivery: Room PL-401 on the plaza level of the
Nassif Building, 400 Seventh Street, SW., Washington, DC, between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
You can get the service information identified in this proposed AD
from Teledyne Continental Motors, Inc., PO Box 90, Mobile, AL 36601;
telephone (251) 438-3411.
FOR FURTHER INFORMATION CONTACT: Jerry Robinette, Senior Engineer,
Propulsion, Atlanta Aircraft Certification Office, FAA, Small Airplane
Directorate, One Crown Center, 1895 Phoenix Blvd., Suite 450, Atlanta,
GA 30349; telephone: (770) 703-6096, fax: (770) 703-6097.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written relevant data, views, or
arguments regarding this proposal. Send your comments to an address
listed under ADDRESSES. Include ``Docket No. FAA-2005-20850;
Directorate Identifier 2005-NE-05-AD'' in the subject line of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of the proposed AD. We will
consider all comments received by the closing date and may amend the
proposed AD in light of those comments.
We will post all comments we receive, without change, to https://
dms.dot.gov, including any personal information you provide. We will
also post a report summarizing each substantive verbal contact with FAA
personnel concerning this proposed AD. Using the search function of the
DMS Web site, anyone can find and read the comments in any of our
dockets, including the name of the individual who sent the comment (or
signed the comment on behalf of an association, business, labor union,
etc.). You may review the DOT's complete Privacy Act Statement in the
Federal Register published on April 11, 2000 (65 FR 19477-78) or you
may visit https://dms.dot.gov.
Examining the AD Docket
You may examine the docket that contains the proposal, any comments
received and any final disposition in person at the DMS Docket Offices
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The Docket Office (telephone (800) 647-5227) is located on
the plaza level of the Department of Transportation Nassif Building at
the street address stated in ADDRESSES. Comments will be available in
the AD docket shortly after the DMS receives them.
Discussion
On September 20, 2005, the FAA issued AD 2005-20-04, Amendment 39-
14297 (70 FR 56355, September 27, 2005). That AD requires initial and
repetitive visual inspections of the starter adapter assembly and
crankshaft gear and unscheduled visual inspections of the starter
adapter assembly and crankshaft gear due to a rough-running engine.
That AD also requires replacement of the starter adapter shaft gear
needle bearing with a certain bushing and installation of a certain TCM
service kit at the next engine overhaul, or at the next starter
[[Page 62571]]
adapter replacement, whichever occurs first. That AD resulted from six
service difficulty reports and one fatal accident report that related
to failed starter adapter assemblies.
Actions Since AD 2005-20-04 Was Issued
Since we issued that AD, we discovered an error in paragraph (h).
In that paragraph, we specify an inspection at the next 100-hour or
annual inspection, whichever occurs first. However, because most of the
airplanes are privately owned and operate under 14 CFR part 91, they
are not required to perform 100-hour inspections. This proposed AD
would correct that error and require the inspections every 100 hours
TIS, instead of at the next 100-hour inspection.
Also, since we issued AD 2005-20-04, TCM revised the mandatory
service bulletin required by this AD. It is now identified as Mandatory
Service Bulletin (MSB) No. MSB94-4G, dated October 31, 2005, and
includes a service kit with new, rather than rebuilt parts.
Relevant Service Information
We have reviewed and approved the technical contents of Teledyne
Continental Aircraft Engine, MSB94-4G, dated October 31, 2005 that
provides inspection and replacement procedures for the starter adapter
assembly and crankshaft gear. That MSB also describes procedures for
replacement of the needle bearing, part number (P/N) 537721, with P/N
654472. That MSB also describes procedures for installation of TCM
service kits EQ6642 (new) or EQ6642R (rebuilt).
Differences Between the Proposed AD and the Service Information
Although TCM MSB No. MSB94-4G, dated October 31, 2005, applies to
GIO-550 and GTSIO-520 series reciprocating engines, this proposed AD
would only apply to GTSIO-520 series reciprocating engines. Also,
although that MSB mandates in Part 1, that magnetos must be overhauled
and periodically inspected at specified times, this proposed AD would
not mandate those actions.
FAA's Determination and Requirements of the Proposed AD
We have evaluated all pertinent information and identified an
unsafe condition that is likely to exist or develop on other products
of this same type design. For that reason, we are proposing this AD,
which would require:
Initial and repetitive visual inspections of the starter
adapter assembly and crankshaft gear, and replacement of components as
necessary.
Unscheduled visual inspections of the starter adapter
assembly and crankshaft gear due to a rough-running engine, and
replacement of components as necessary.
Replacement of the starter adapter shaft gear needle
bearing, P/N 537721 with bushing, P/N 654472.
Inspection and replacement of components specified in Part
2 of the MSB as necessary every 100 hours TIS or annually, whichever
occurs first.
Inspection of starter adapters with more or less than 400
hours TIS or unknown TIS.
Installation of TCM service kit, P/N EQ6642 or P/N
EQ6642R, at next engine overhaul, or at next starter adapter
replacement, whichever occurs first.
The proposed AD would require you to use the service information
described previously to perform the inspections and replacements.
Costs of Compliance
We estimate that this AD will affect 4,240 engines installed on
airplanes of U.S. registry. We also estimate that it would take about
one work-hour per engine to perform the inspection, about one work-hour
per engine to perform the proposed bushing installation and about six
work-hours per engine to install the TCM service kit. The average labor
rate is $80 per work-hour. We estimate that about 25 percent of the
engines will require an unscheduled (rough-running engine) inspection
and about half of the engines will require the bushing and TCM service
kit. Required bushings would cost about $16 per engine and service kits
about $800 per engine. Based on these figures, we estimate the total
cost of the proposed AD to U.S. operators to be $6,393,432.
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 proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would 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 the proposed
regulation:
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. Would 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 proposed AD. See the ADDRESSES section for a location
to examine the regulatory evaluation.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Safety.
The Proposed Amendment
Under the authority delegated to me by the Administrator, the
Federal Aviation Administration proposes to amend 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 removing Amendment 39-14297 (70 FR
56355, September 27, 2005) and by adding a new airworthiness directive,
Amendment 39-XXXXX, to read as follows:
Teledyne Continental Motors: Docket No. FAA-2005-20850; Directorate
Identifier 2005-NE-05-AD.
Comments Due Date
(a) The Federal Aviation Administration (FAA) must receive
comments on this airworthiness directive (AD) action by December 26,
2006.
Affected ADs
(b) This AD supersedes AD 2005-20-04, Amendment 39-14297.
[[Page 62572]]
Applicability
(c) This AD applies to Teledyne Continental Motors (TCM) GTSIO-
520 series reciprocating engines. These engines are installed on,
but not limited to, Twin Commander (formerly Aero Commander) model
685, Cessna model 404, 411 series, and 421 series, British
Aerospace, Aircraft Group, Scottish Division model B.206 series 2
and Aeronautica Macchi model AM-3 airplanes.
Unsafe Condition
(d) This AD results from an error discovered in AD 2005-20-04.
We are issuing this AD to prevent failure of the starter adapter
assembly and or crankshaft gear, resulting in failure of the engine
and possible forced landing.
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.
Starter Adapter Shaft Gear Needle Bearing Replacement
(f) If, during an inspection required by paragraph (g), (h),
(i), or (j) of this AD, you find needle bearing, part number (P/N)
537721, installed in the crankcase, replace it with a serviceable
bushing, before reassembling components. Use the bushing
installation procedure specified in Part 4 of TCM Mandatory Service
Bulletin (MSB) No. MSB94-4G, dated October 31, 2005.
Unscheduled Inspections for Rough-Running Engines
(g) For any engine that experiences rough running conditions
regardless of time-in-service (TIS), do the following:
(1) Before further flight, perform the inspection procedures
specified in Part 1 and Part 3 of TCM MSB No. MSB94-4G, dated
October 31, 2005, and replace components as necessary.
(2) An engine is considered rough-running if there is a sudden
increase in the perceived vibration levels that cannot be cleared by
adjustment of the engine controls; particularly the fuel mixture
setting. Information on rough running engines can be found in the
aircraft manufacturer's Airplane Flight Manual, Pilot's Operating
Handbook, or Aircraft Owners Manual.
100-Hour and Annual Inspections
(h) For any engine that has been inspected using paragraph (h)
of AD 2005-20-04 and the 100-hour inspection procedures or 100 hour
TIS intervals or annual inspection procedures, continue the
inspections as follows:
(1) Perform the inspection procedures specified in Part 2 of TCM
MSB No. MSB94-4G, dated October 31, 2005 and replace components as
necessary at each 100 hour TIS interval (plus or minus 10 hours TIS)
or annual inspection, whichever occurs first.
(2) Thereafter, at each 100 hour TIS interval (plus or minus 10
hours TIS) perform repetitive inspections and component replacements
as specified in paragraph (h)(1) of this AD.
(i) For any engine that has not been inspected using paragraph
(h) of AD 2005-20-04, within 25 hours TIS or at the annual
inspection, whichever occurs first, do the following:
(1) Perform the inspection procedures specified in Part 2 of TCM
MSB No. MSB94-4G, dated October 31, 2005 and replace components as
necessary.
(2) Thereafter, at each 100-hour TIS interval (plus or minus 10
hours TIS) perform repetitive inspections and component replacements
as specified in paragraph (i)(1) of this AD.
(3) If the inspection is performed at more than 100 hour
intervals, subtract the additional hours from the next scheduled 100
hour inspection.
Starter Adapters With 400 Hours or More Time-In-Service (TIS) or
Unknown TIS
(j) For any starter adapter with 400 hours or more TIS or
unknown TIS on the effective date of this AD, do the following:
(1) Within 25 hours TIS, perform the inspection procedures
specified in Part 3 of TCM MSB No. MSB94-4G, dated October 31, 2005,
and replace components as necessary.
(2) Thereafter, at 400-hour TIS intervals, (plus or minus 10
hours TIS), perform repetitive inspections and component
replacements specified in Part 3 of TCM MSB No. MSB94-4G, dated
October 31, 2005, and replace components as necessary.
Starter Adapters With Fewer Than 400 Hours TIS
(k) For any starter adapter with fewer than 400 hours TIS on the
effective date of this AD, do the following:
(1) Upon accumulation of 400 hours TIS, (plus or minus 10 hours
TIS), perform the inspection procedures specified in Part 3 of TCM
MSB No. MSB94-4G, dated October 31, 2005, and replace components as
necessary.
(2) Thereafter, at 400-hour TIS intervals, (plus or minus 10
hours TIS), perform repetitive inspections and component
replacements, as specified in Part 3 of TCM MSB No. MSB94-4G, dated
October 31, 2005, and replace components as necessary.
Installation of TCM Service Kit, EQ6642 or EQ6642R
(l) At the next engine overhaul or starter adapter replacement
after the effective date of this AD, whichever occurs first, do the
following:
(1) Install TCM service kit, P/N EQ6642 (new) or EQ6642R
(rebuilt). Use the service kit installation procedures specified in
Part 5 of TCM MSB No. MSB94-4G, dated October 31, 2005.
(2) Continue performing the inspections and component
replacements specified in paragraphs (g), (h), (i), (j) and (k) of
this AD.
Prohibition of Special Flight Permits for Rough-Running Engines
(m) Special flight permits are prohibited for rough-running
engines described in paragraph (g)(2) of this AD.
Alternative Methods of Compliance (AMOCs)
(n) The Manager, Atlanta Aircraft Certification Office, FAA, 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) None.
Issued in Burlington, Massachusetts, on October 18, 2006.
Thomas A. Boudreau,
Acting Manager, Engine and Propeller Directorate, Aircraft
Certification Service.
[FR Doc. E6-17935 Filed 10-25-06; 8:45 am]
BILLING CODE 4910-13-P
