[Federal Register: August 21, 2007 (Volume 72, Number 161)]
[Proposed Rules]
[Page 46582-46584]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr21au07-24]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2007-28730; Directorate Identifier 2007-CE-063-AD]
RIN 2120-AA64
Airworthiness Directives; GARMIN International GSM 85 Servo
Gearbox Units
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: We propose to adopt a new airworthiness directive (AD) for
certain GARMIN International (GARMIN) GSM 85 servo gearbox units that
are installed on airplanes. This proposed AD would require you to
inspect the GSM 85 servo gearbox for foreign object debris and return
the unit to the manufacturer for replacement if you find debris. This
proposed AD results from reports of certain GARMIN GSM 85 servo gearbox
units that have foreign object debris inside the assembly. We are
proposing this AD to detect and correct defective GARMIN GSM 85 servo
gearbox units, which could result in jamming of the gearbox. Jamming of
the gearbox could lead to the pilot having to apply excessive manual
force to control the airplane.
DATES: We must receive comments on this proposed AD by October 22,
2007.
ADDRESSES: Use one of the following addresses to comment on this
proposed AD:
DOT Docket Web site: Go to http://dms.dot.gov and follow
the instructions for sending your comments electronically.
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.
Fax: (202) 493-2251.
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.
Federal eRulemaking Portal: Go to http://www.regulations.gov.
Follow the instructions for submitting comments.
For service information identified in this proposed AD, contact
GARMIN International Inc., 1200 East 151st Street, Olathe, KS 66062;
telephone: 913-397-8200; fax: 913-397-8282.
FOR FURTHER INFORMATION CONTACT: Roger A. Souter, Aerospace Engineer,
FAA, Wichita Aircraft Certification Office, 1801 Airport Road, Room
100, Wichita, Kansas 67209; telephone: 316-946-4134; fax: 316-946-4107;
e-mail address: roger.souter@faa.gov.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written relevant data, views, or
arguments regarding this proposed AD. Send your comments to an address
listed under the ADDRESSES section. Include the docket number, ``FAA-
2007-28730; Directorate Identifier 2007-CE-063-AD'' at the beginning 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 http://dms.dot.gov
, including any personal information you provide. We will
also post a report summarizing each substantive verbal contact we
receive concerning this proposed AD.
Discussion
We have received reports of certain GARMIN GSM 85 servo gearbox
units having foreign object debris inside the assembly. The debris was
found during installation and removal.
The GSM 85 servo gearbox extrusion (housing) is composed primarily
of aluminum. The manufacturer selectively uses a tumbling process to
deburr the housing, which resulted in foreign object debris collecting
in the housing cavities.
We have determined that foreign object debris inside the gear-
assembly housing may come loose causing the GSM 85 servo gearbox to
jam.
This condition, if not corrected, could result in the GSM 85 servo
gearbox unit becoming jammed. Jamming of the servo gearbox could lead
to the pilot having to apply excessive manual force to control the
airplane.
Relevant Service Information
We have reviewed GARMIN International, Inc. Service Bulletin No.
0713, Revision A, dated May 7, 2007; GARMIN International, Inc. Service
Bulletin No. 0713, Revision B, dated May 18, 2007; GARMIN
International, Inc. Service Bulletin No. 0713, Revision C, dated May
29, 2007; and GARMIN International, Inc. Service Bulletin No. 0713,
Revision D, dated June 13, 2007. These service bulletins describe
procedures for inspecting the GSM 85 servo gearbox for foreign object
debris and returning the unit to the manufacturer for replacement if
debris is found.
FAA's Determination and Requirements of the Proposed AD
We are proposing this AD because we evaluated all information and
determined the unsafe condition described previously is likely to exist
or develop on other products of the same type design. This proposed AD
would require you to inspect the GSM 85 servo gearbox for foreign
object debris and return the unit to the manufacturer for replacement
if you find debris.
Costs of Compliance
We estimate that this proposed AD would affect 900 airplanes in the
U.S. registry.
We estimate the following costs to do the proposed inspection:
[[Page 46583]]
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Total cost per Total cost on U.S.
Labor cost Parts cost airplane operators
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7 work-hours x $80 per hour = $560........ Not applicable.............. $560 $504,000
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For airplanes that would need to replace the GSM 85 servo gearbox
based on the results of the proposed inspection, we estimate the
following costs to set the torque value of the slip-clutch breakaway
required for installation. We have no way of determining the number of
airplanes that may need this replacement:
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Total cost per GSM 85
Labor cost per GSM 85 Servo Gearbox Parts cost Servo Gearbox
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.5 work-hours x $80 per hour = $40.............. Not applicable.................... $40
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Warranty credit will be given to the extent specified in the
service information.
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. 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 regulatory evaluation of the estimated costs to
comply with this proposed AD and placed it in the AD docket.
Examining the AD Docket
You may examine the AD docket that contains the proposed AD, the
regulatory evaluation, any comments received, and other information on
the Internet at http://dms.dot.gov; or in person at the Docket
Management Facility between 9 a.m. and 5 p.m., Monday through Friday,
except Federal holidays. The Docket Office (telephone (800) 647-5527)
is located at the street address stated in the ADDRESSES section.
Comments will be available in the AD docket shortly after receipt.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA 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 adding the following new AD:
GARMIN International: Docket No. FAA-2007-28730; Directorate
Identifier 2007-CE-063-AD.
Comments Due Date
(a) We must receive comments on this airworthiness directive
(AD) action by October 22, 2007.
Affected ADs
(b) None.
Applicability
(c) This AD applies to the GSM 85 servo gearbox units that are
specified in paragraph (c)(1) of this AD and are installed on
airplanes. These GSM 85 servo gearbox units are installed in, but
not limited to, airplanes that are certificated in any category and
presented in paragraph (c)(2) of this AD:
(1) GSM 85 servo gearbox units, part numbers (P/Ns): 011-00894-
00, 011-00894-02, 011-00894-04, 011-00894-06, 011-00894-07, 011-
00894-08, 011-00894-09, 011-00894-10, 011-00894-11, and 011-00894-
14.
(2) Airplanes with the GSM 85 servo gearbox units installed
(other aircraft could have installations through other methods such
as field approval):
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Type certificate holder Models
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(i) Cessna Aircraft Company.. 182T, T182T, 206H, and T206H.
(ii) Hawker Beechcraft G36 and G58.
Corporation.
(iii) Diamond Aircraft DA40 and DA40F.
Industries GmbH.
(iv) Columbia Aircraft 350 and 400.
Manufacturing.
(v) Mooney Airplane Company, M20M and M20R.
Inc.
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Unsafe Condition
(d) This AD results from reports of certain GARMIN GSM 85 servo
gearbox units that have foreign object debris inside the assembly.
We are issuing this AD to detect and correct defective GARMIN GSM 85
servo gearbox units, which could result in jamming of the servo
gearbox. This jamming could
[[Page 46584]]
lead to the pilot having to apply excessive manual force to control
the airplane.
Compliance
(e) To address this problem, you must do the following, unless
already done:
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Actions Compliance Procedures
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(1) Check the serial tag of Check within the Check following
the installed GSM 85 servo next 100 hours time- GARMIN
gearbox unit to determine in-service (TIS) International, Inc.
the mod level. The mod after the effective Service Bulletin
level marked on the serial date of this AD or No. 0713, Revision
tag indicates if the GSM 85 within the next 3 A, dated May 7,
servo gearbox unit is months after the 2007; Service
already in compliance with effective date of Bulletin No. 0713,
this AD. this AD, whichever Revision B, dated
(i) If the serial tag on the occurs first. May 18, 2007;
installed GSM 85 servo Service Bulletin
gearbox unit for P/Ns 011- No. 0713, Revision
00894-00 or 011-00894-10 is C, dated May 29,
marked at mod level 3, no 2007; or Service
further action is required. Bulletin No. 0713,
(ii) If the serial tag on Revision D, dated
the installed GSM 85 servo June 13, 2007. If
gearbox unit for P/Ns 011- the Mod Level of
00894-02, 011-00894-04, 011- the P/Ns specified
00894-06, 011-00894-07, 011- in paragraph
00894-08, 011-00894-09, 011- (e)(1)(i) and
00894-11, or 011-00894-14 (e)(1)(ii) are at
is marked at mod level 1, mod level 1 and mod
no further action is level 3, as
required. applicable, make an
(iii) If the serial tag on entry into the
the above GSM servo gearbox aircraft logbook
unit is not at mod level 1 showing compliance
or 3, then go to paragraph with this portion
(e)(2) of this AD. of the AD in
accordance with
section 43.9 of the
Federal Aviation
Regulations (14 CFR
43.9). The owner/
operator holding at
least a private
pilot certificate
as authorized by
section 43.7 of the
Federal Aviation
Regulations (14 CFR
43.7) may do this
action.
(2) If the serial tag on the Within the next 100 Follow the
GSM 85 servo gearbox for P/ hours TIS after the Modification
Ns specified in paragraph effective date of Instructions in
(e)(1) of this AD is not this AD or within GARMIN
marked at mod level 1 or the next 3 calendar International, Inc.
mod level 3 as applicable, months after the Service Bulletin
inspect the servo gearbox effective date of No. 0713, Revision
for foreign object debris. this AD, whichever A, dated May 7,
occurs first. 2007; Service
Bulletin No. 0713,
Revision B, dated
May 18, 2007;
Service Bulletin
No. 0713, Revision
C, dated May 29,
2007; or Service
Bulletin No. 0713,
Revision D, dated
June 13, 2007.
(3) If foreign object debris Before further Follow the
is found during the flight after the Modification
inspection required in inspection required Instructions in
paragraph (e)(2) of this in paragraph (e)(2) GARMIN
AD, remove and return the of this AD. International, Inc.
GSM 85 servo gearbox to the Service Bulletin
manufacturer for No. 0713, Revision
replacement. A, dated May 7,
2007; Service
Bulletin No. 0713,
Revision B, dated
May 18, 2007;
Service Bulletin
No. 0713, Revision
C, dated May 29,
2007; or Service
Bulletin No. 0713,
Revision D, dated
June 13, 2007.
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Alternative Methods of Compliance (AMOCs)
(f) The Manager, Wichita Aircraft Certification Office (ACO),
FAA, has the authority to approve AMOCs for this AD, if requested
using the procedures found in 14 CFR 39.19. Send information to
ATTN: Roger A. Souter, Aerospace Engineer, FAA, Wichita ACO, 1801
Airport Road, Room 100, Wichita, Kansas 67209; telephone: (316) 946-
4134; fax: (316) 946-4107; e-mail address: roger.souter@faa.gov.
Before using any approved AMOC on any airplane to which the AMOC
applies, notify your appropriate principal inspector (PI) in the FAA
Flight Standards District Office (FSDO), or lacking a PI, your local
FSDO.
Related Information
(g) To get copies of the service information referenced in this
AD, contact GARMIN International Inc., 1200 East 151st Street,
Olathe, KS 66062; telephone: (913) 397-8200; fax: (913) 397-8282. To
view the AD docket, go to U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue, SE., Washington, DC 20590, or on the Internet at
http://dms.dot.gov. The docket number is Docket No. FAA-2007-28730;
Directorate Identifier 2007-CE-063-AD.
Issued in Kansas City, Missouri, on August 14, 2007.
Terry L. Chasteen,
Acting Manager, Small Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E7-16416 Filed 8-20-07; 8:45 am]
BILLING CODE 4910-13-P