[Federal Register: January 22, 2008 (Volume 73, Number 14)]
[Rules and Regulations]
[Page 3615-3617]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr22ja08-1]
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Rules and Regulations
Federal Register
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[[Page 3615]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2007-28730; Directorate Identifier 2007-CE-063-AD;
Amendment 39-15336; AD 2008-02-06]
RIN 2120-AA64
Airworthiness Directives; GARMIN International GSM 85 Servo
Gearbox Units
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: The FAA adopts a new airworthiness directive (AD) for certain
GARMIN International (GARMIN) GSM 85 servo gearbox units that are
installed on airplanes. This AD requires 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 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 gearbox. Jamming of the gearbox could lead to the
pilot having to apply sufficient control force to override the servo
gearbox slip clutch in order to control the airplane. In certain
situations, this could compromise the safety of the airplane if the
pilot was not able to focus on critical duties due to having to tend to
the servo gearbox.
DATES: This AD becomes effective on February 26, 2008.
On February 26, 2008, the Director of the Federal Register approved
the incorporation by reference of certain publications listed in this
AD.
ADDRESSES: To get the service information identified 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://www.regulations.gov. The docket number is FAA-2007-28730;
Directorate Identifier 2007-CE-063-AD.
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:
Discussion
On August 14, 2007, we issued a proposal to amend part 39 of the
Federal Aviation Regulations (14 CFR part 39) to include an AD that
would apply to certain GARMIN International (GARMIN) GSM 85 servo
gearbox units that are installed on airplanes. This proposal was
published in the Federal Register as a notice of proposed rulemaking
(NPRM) on August 21, 2007 (72 FR 46582). The NPRM proposed to 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.
Comments
We provided the public the opportunity to participate in developing
this AD. The following presents the comments received on the proposal
and FAA's response to each comment:
Comment Issue No. 1: Replace the Phrase ``Excessive Manual Force''
GARMIN states that using the phrase ``excessive manual force'' in
the NPRM implies that the flight crew may not be able to control the
airplane if the servo gearbox jams because of loose foreign object
debris inside the gear-assembly housing.
GARMIN agrees that more than typical or usual force may be
necessary to overcome the slip clutch in the servo, but it is within
the capability of the pilot to control the airplane.
GARMIN requests that the phrase ``excessive manual force'' be
replaced with ``sufficient control force to override the servo gearbox
slip clutch.''
We partially agree with GARMIN. We will change the final rule AD
action to reflect that jamming could lead to the pilot having to apply
sufficient control force to override the servo gearbox slip clutch in
order to control the airplane.
Comment Issue No. 2: Incorporate Cessna Service Bulletin
Cessna Aircraft Company (Cessna) has issued Service Bulletin SB07-
22-01, dated June 4, 2007, to transmit GARMIN International, Inc.
Service Bulletin No. 0713, Revision C, dated May 29, 2007.
Cessna requests that their service bulletin be incorporated as a
means for complying with this AD.
We agree with Cessna and will change the final rule AD action to
incorporate this change.
Conclusion
We have carefully reviewed the available data and determined that
air safety and the public interest require adopting the AD as proposed
except for the changes previously discussed and minor editorial
corrections. We have determined that these minor corrections:
Are consistent with the intent that was proposed in the
NPRM for correcting the unsafe condition; and
Do not add any additional burden upon the public than was
already proposed in the NPRM.
Costs of Compliance
We estimate that this AD affects 900 airplanes in the U.S.
registry.
We estimate the following costs to do the inspection:
----------------------------------------------------------------------------------------------------------------
Total cost per Total cost on U.S.
Labor cost Parts cost airplane operators
----------------------------------------------------------------------------------------------------------------
7 work-hours x $80 per hour = $560........ Not applicable.............. $560 $504,000
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[[Page 3616]]
For airplanes that will need to replace the GSM 85 servo gearbox
based on the results of the 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 will need this replacement:
------------------------------------------------------------------------
Labor cost per GSM 85 servo Total cost per GSM
gearbox Parts cost 85 servo gearbox
------------------------------------------------------------------------
.5 work-hour x $80 per hour = Not applicable....... $40
$40.
------------------------------------------------------------------------
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 AD.
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 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 summary of the costs to comply with this AD (and
other information as included in the Regulatory Evaluation) 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 ``Docket
No. FAA-2007-28730; Directorate Identifier 2007-CE-063-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 part 39 of the Federal
Aviation Regulations (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. FAA amends Sec. 39.13 by adding a new AD to read as follows:
2008-02-06 GARMIN International: Amendment 39-15336; Docket No. FAA-
2007-28730; Directorate Identifier 2007-CE-063-AD.
Effective Date
(a) This AD becomes effective on February 26, 2008.
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):
------------------------------------------------------------------------
Type certificate holder Models
------------------------------------------------------------------------
(i) Cessna Aircraft Company............ 182T, T182T, 206H, and T206H.
(ii) Hawker Beechcraft Corporation..... G36 and G58.
(iii) Diamond Aircraft Industries GmbH. DA40 and DA40F.
(iv) Columbia Aircraft Manufacturing... 350 and 400.
(v) Mooney Airplane Company, Inc....... M20M and M20R.
------------------------------------------------------------------------
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 lead to the pilot having to apply
sufficient control force to override the servo gearbox slip clutch
in order to control the airplane. In certain situations, this could
compromise the safety of the airplane if the pilot was not able to
focus on critical duties due to having to tend to the servo gearbox.
Compliance
(e) To address this problem, you must do the following, unless
already done:
[[Page 3617]]
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Actions Compliance Procedures
----------------------------------------------------------------------------------------------------------------
(1) Check the serial tag of the Check within the next 100 hours time- Check following GARMIN
installed GSM 85 servo gearbox unit in-service (TIS) after February 26, International, Inc. Service
to determine the mod level. The mod 2008 (the effective date of this Bulletin No. 0713, Revision A,
level marked on the serial tag AD) or within the next 3 months dated May 7, 2007; Service Bulletin
indicates if the GSM 85 servo after February 26, 2008 (the No. 0713, Revision B, dated May 18,
gearbox unit is already in effective date of this AD), 2007; Service Bulletin No. 0713,
compliance with this AD. whichever occurs first. Revision C, dated May 29, 2007;
(i) If the serial tag on the Service Bulletin No. 0713, Revision
installed GSM 85 servo gearbox unit D, dated June 13, 2007; or Cessna
for P/Ns 011-00894-00 or 011-00894- Aircraft Company Single Engine
10 is marked at mod level 3, no Service Bulletin SB07-22-01, dated
further action is required. June 4, 2007, as applicable. If the
(ii) If the serial tag on the Mod Level of the P/Ns specified in
installed GSM 85 servo gearbox unit paragraph (e)(1)(i) and (e)(1)(ii)
for P/Ns 011-00894-02, 011-00894- are at mod level 1 and mod level 3,
04, 011-00894-06, 011-00894-07, 011- as applicable, make an entry into
00894-08, 011-00894-09, 011-00894- the aircraft logbook showing
11, or 011-00894-14 is marked at compliance with this portion of the
mod level 1, no further action is AD in accordance with section 43.9
required. of the Federal Aviation Regulations
(iii) If the serial tag on the above (14 CFR 43.9). The owner/operator
GSM servo gearbox unit is not at holding at least a private pilot
mod level 1 or 3 as specified in certificate as authorized by
paragraphs (e)(1)(i) and (e)(1)(ii) section 43.7 of the Federal
of this AD, then go to paragraph Aviation Regulations (14 CFR 43.7)
(e)(2) of this AD. may do this action.
(2) If the serial tag on the GSM 85 Within the next 100 hours TIS after Follow the Modification Instructions
servo gearbox for P/Ns specified in February 26, 2008 (the effective in GARMIN International, Inc.
paragraph (e)(1) of this AD is not date of this AD) or within the next Service Bulletin No. 0713, Revision
marked at mod level 1 or mod level 3 calendar months after February A, dated May 7, 2007; Service
3 as specified in paragraphs 26, 2008 (the effective date of Bulletin No. 0713, Revision B,
(e)(1)(i) and (e)(1)(ii) of this this AD), whichever occurs first. dated May 18, 2007; Service
AD, inspect the servo gearbox for Bulletin No. 0713, Revision C,
foreign object debris. dated May 29, 2007; Service
Bulletin No. 0713, Revision D,
dated June 13, 2007; or Cessna
Aircraft Company Single Engine
Service Bulletin SB07-22-01, dated
June 4, 2007, as applicable.
(3) If foreign object debris is Before further flight after the Follow the Modification Instructions
found during the inspection inspection required in paragraph in GARMIN International, Inc.
required in paragraph (e)(2) of (e)(2) of this AD. Service Bulletin No. 0713, Revision
this AD, remove and return the GSM A, dated May 7, 2007; Service
85 servo gearbox to the Bulletin No. 0713, Revision B,
manufacturer for replacement. dated May 18, 2007; Service
Bulletin No. 0713, Revision C,
dated May 29, 2007; Service
Bulletin No. 0713, Revision D,
dated June 13, 2007; or Cessna
Aircraft Company Single Engine
Service Bulletin SB07-22-01, dated
June 4, 2007, as applicable.
----------------------------------------------------------------------------------------------------------------
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.
Material Incorporated by Reference
(g) You must use 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; GARMIN International, Inc. Service Bulletin No. 0713,
Revision D, dated June 13, 2007; and Cessna Aircraft Company Single
Engine Service Bulletin SB07-22-01, dated June 4, 2007, to do the
actions required by this AD, unless the AD specifies otherwise.
(1) The Director of the Federal Register approved the
incorporation by reference of this service information under 5
U.S.C. 552(a) and 1 CFR part 51.
(2) For service information identified in this AD, contact
GARMIN International, Inc., 1200 East 151st Street, Olathe, KS
66062; telephone: (913) 397-8200; fax: (913) 397-8282.
(3) You may review copies at the FAA, Central Region, Office of
the Regional Counsel, 901 Locust, Kansas City, Missouri 64106; 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 Kansas City, Missouri, on January 11, 2008.
John Colomy,
Acting Manager, Small Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E8-828 Filed 1-18-08; 8:45 am]
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