83 FR 6118 - Airworthiness Directives; Stemme AG Gliders

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 83, Issue 30 (February 13, 2018)

Page Range		6118-6120
FR Document		2018-02749

We are superseding Airworthiness Directive (AD) 2017-10-11 for Stemme AG Model Stemme S10-VT gliders (type certificate previously held by Stemme GmbH & Co. KG). This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and address an unsafe condition on an aviation product. The MCAI describes the unsafe condition as certain propeller front transmission gear wheels having insufficient material strength because of improper heat treatment during manufacturing. We are issuing this AD to require actions to address the unsafe condition on these products and to add Stemme AG Model Stemme S 12 gliders to the Applicability section.

Federal Register, Volume 83 Issue 30 (Tuesday, February 13, 2018)

[Federal Register Volume 83, Number 30 (Tuesday, February 13, 2018)]
[Rules and Regulations]
[Pages 6118-6120]
From the Federal Register Online [www.thefederalregister.org]
[FR Doc No: 2018-02749]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0952; Product Identifier 2017-CE-028-AD; Amendment
39-19189; AD 2018-03-16]
RIN 2120-AA64

Airworthiness Directives; Stemme AG Gliders

AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: We are superseding Airworthiness Directive (AD) 2017-10-11 for
Stemme AG Model Stemme S10-VT gliders (type certificate previously held
by Stemme GmbH & Co. KG). This AD results from mandatory continuing
airworthiness information (MCAI) issued by an aviation authority of
another country to identify and address an unsafe condition on an
aviation product. The MCAI describes the unsafe condition as certain
propeller front transmission gear wheels having insufficient material
strength because of improper heat treatment during manufacturing. We
are issuing this AD to require actions to address the unsafe condition
on these products and to add Stemme AG Model Stemme S 12 gliders to the
Applicability section.

DATES: This AD is effective March 20, 2018.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of March 20,
2018.

ADDRESSES: You may examine the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2017-
0952; or in person at Docket Operations, U.S. Department of
Transportation, M-30, West Building Ground Floor, Room W12-140, 1200
New Jersey Avenue SE, Washington, DC 20590.
For service information identified in this AD, contact STEMME AG,
Flugplatzstrasse F2, Nr. 6-7, D-15344 Strausberg, Germany; telephone:
+49 (0) 3341 3612-0, fax: +49 (0) 3341 3612-30; internet: https://www.stemme.com. You may view this referenced service information at the
FAA, Policy and Innovation Division, 901 Locust, Kansas City, Missouri
64106. For information on the availability of this material at the FAA,
call (816) 329-4148. It is also available on the internet at http://www.regulations.gov by searching for Docket No. FAA-2017-0952.

FOR FURTHER INFORMATION CONTACT: Jim Rutherford, Aerospace Engineer,
FAA, Small Airplane Standards Branch, 901 Locust, Room 301, Kansas
City, Missouri 64106; telephone: (816) 329-4165; fax: (816) 329-4090;
email: jim.rutherford@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion

We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would apply to all Stemme AG Model Stemme
S10-VT gliders (type certificate previously held by Stemme GmbH & Co.
KG) and all Stemme AG Model Stemme S 12 gliders equipped with a certain
front gearbox, part number 11AG. That NPRM was published in the Federal
Register on October 10, 2017 (82 FR 46938), and proposed to supersede
AD 2017-10-11, Amendment 39-18885 (82 FR 24239, May 26, 2017) (``AD
2017-10-11'').
Since we issued AD 2017-10-11, we have type certificated Stemme AG
Model Stemme S 12 gliders in the United States and have determined
those model gliders should also be included in the applicability of AD
2017-10-11. In addition, Stemme AG has issued new service information
with procedures for addressing the unsafe condition.

Comments

We gave the public the opportunity to participate in developing
this AD. The following presents the comment received on the proposal
and the FAA's response to the comment.

Request for Manufacturer To Be Responsible for All Associated Cost

Taylor Ray stated that the manufacturer should be responsible for
replacing the front gearbox on the affected gliders at no cost to the
owners/operators. We infer that the commenter is referring to the cost
for both parts and labor.
Taylor Ray stated that since the unsafe condition resulted from the
manufacturing process, the manufacturer should be responsible for
fixing the unsafe condition.
We neither agree nor disagree since the FAA does not get involved
in who pays for the cost of mitigating an unsafe condition. The primary
concern the FAA has when issuing an AD is addressing unsafe conditions
on various aircraft flying in the United States. While we provide
information related to the estimated labor and parts cost associated
with each AD, we do not control warranty coverage for owner/operators
of the affected aircraft nor can

[[Page 6119]]

we mandate the manufacturer to cover all associated costs. We have
contacted Stemme AG about this issue. The following is the response we
received: ``All costs will be paid by Stemme AG (parts + work) for
customers who are affected within the one-year warranty. Customers who
are out of the one-year warranty will receive parts for free, but
unfortunately, they have to pay for the necessary work (approx. 10
working hours).'' Based on this response from Stemme AG, we revised the
Cost of Compliance section in this AD. We changed the number of
estimated work-hours per product to replace the front gearbox from 19
to 10, updated the total cost on U.S. operators and cost per product
based on this change, and added standard warranty information.

Conclusion

We reviewed the relevant data, considered the comment received, and
determined that air safety and the public interest require adopting
this AD as proposed except for changes stated above. We have determined
that these changes:
Are consistent with the intent that was proposed in the
NPRM for addressing the unsafe condition; and
Do not add any additional burden upon the public than was
already proposed in the NPRM.

Related Service Information Under 1 CFR Part 51

Stemme AG has issued STEMME Service Bulletin Dok. Nr.: P062-980010,
Issue: 01, dated June 14, 2017, and STEMME Procedural Specification
Dok. Nr.: P320-900060, dated June 14, 2017. In combination, the service
information describes procedures for replacing the front gearbox. This
service information is reasonably available because the interested
parties have access to it through their normal course of business or by
the means identified in the ADDRESSES section of this AD.

Differences Between This AD and the Service Information

The service information for this AD allows the owner/operator to do
certain maintenance tasks. Also, the service information specifies
certain maintenance tasks be done by Stemme AG. However, for this AD,
we do not allow the owner/operator to do any maintenance tasks; all
maintenance tasks must be done by an appropriately certified mechanic
or maintenance shop. In addition, we do not require any maintenance
tasks be done specifically by Stemme AG; any appropriately certified
mechanic or maintenance shop may do the tasks required by this AD.

Costs of Compliance

According to the U.S. registry, we have a total of 51 of both
glider types registered, but there are still only 14 serial numbers of
the part number 11AG front gearbox. Therefore, the most gliders that
will be affected remains 14. According to Stemme AG, there are a total
of 4 of the affected front gearboxes on both glider types of U.S.
registry (2 for each model).
It will take an estimated 10 work-hours per product to comply with
the basic requirements of this AD. The average labor rate is $85 per
work-hour. Required parts will cost about $2,000 per product.
Based on these figures, if we consider the costs for all 14
affected gearboxes, then we estimate the cost of this AD on U.S.
operators to be $39,990, or $2,850 per product.
According to the manufacturer, some of the costs of this AD may be
covered under warranty, thereby reducing the cost impact on affected
individuals. We do not control warranty coverage for affected
individuals. As a result, we have included all costs in our cost
estimate.

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.
This AD is issued in accordance with authority delegated by the
Executive Director, Aircraft Certification Service, as authorized by
FAA Order 8000.51C. In accordance with that order, issuance of ADs is
normally a function of the Compliance and Airworthiness Division, but
during this transition period, the Executive Director has delegated the
authority to issue ADs applicable to small airplanes, gliders,
balloons, airships, domestic business jet transport airplanes, and
associated appliances to the Director of the Policy and Innovation
Division.

Regulatory Findings

We 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 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),
(3) Will not affect intrastate aviation in Alaska, and
(4) 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.

Examining the AD Docket

You may examine the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2017-
0952; or in person at Docket Operations between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays. The AD docket contains
the NPRM, the regulatory evaluation, any comments received, and other
information. The street address for Docket Operations (telephone (800)
647-5527) is 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, Incorporation by
reference, Safety.

Adoption of the Amendment

Accordingly, under the authority delegated to me by the
Administrator, the FAA 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 39-18885 (82 FR
24239, May 26, 2017), and adding the following new AD:

[[Page 6120]]

2018-03-16 Stemme AG: Amendment 39-19189; Docket No. FAA-2017-0952;
Product Identifier 2017-CE-028-AD.

(a) Effective Date

This airworthiness directive (AD) becomes effective March 20,
2018.

(b) Affected ADs

This AD replaces AD 2017-10-11, Amendment 39-18885 (82 FR 24239,
May 26, 2017) (``AD 2017-10-11'').

This AD applies to Stemme AG Model Stemme S10-VT gliders (type
certificate previously held by Stemme GmbH & Co. KG), all serial
numbers, and Stemme AG Model Stemme S 12 gliders, all serial
numbers, that are:
(1) Equipped with a front gearbox, part number (P/N) 11AG, with
a serial number listed in table 1 to paragraph (c) of this AD; and
(2) are certificated in any category.

Table 1 to Paragraph (c) of This AD--Affected P/N 11AG (Front Gearbox) S/Ns
----------------------------------------------------------------------------------------------------------------

----------------------------------------------------------------------------------------------------------------
80058/0814 80059/0915 80060/0915 80061/1115 80062/1215
80063/0116 80064/0416 80065/0616 80066/0716 80067/0916
80068/1016 80069/0117 80070/0217 80071/0217 ....................
----------------------------------------------------------------------------------------------------------------

Note 1 to paragraph (c) of this AD: Page 2 of Stemme AG Service
Bulletin No. P062-980010, dated April 21, 2017, provides a pictorial
of where the serial number of the affected gearboxes are located.

(d) Subject

Air Transport Association of America (ATA) Code 61: Propellers/
Propulsors.

(e) Reason

This AD was prompted by mandatory continuing airworthiness
information (MCAI) issued by the aviation authority of another
country to identify and address an unsafe condition on an aviation
product. The MCAI describes the unsafe condition as certain
propeller front transmission gear wheels having insufficient
material strength because of improper heat treatment during
manufacturing. We are issuing this AD to add a model glider to the
Applicability, paragraph (c) of this AD, and to prevent failure of
the propeller front transmission gear wheels. This failure could
cause loss of power between the engine and the propeller, which
could result in reduced control.

(f) Actions and Compliance

Unless already done, do the following actions:
(1) For Model Stemme S10-VT gliders: Before further flight after
June 15, 2017 (the effective date of AD 2017-10-11), replace the
front gearbox following STEMME Procedural Specification Dok. Nr.:
P320-900060, as specified in STEMME Service Bulletin Dok. Nr.: P062-
980010, Issue: 01, both dated June 14, 2017.
(2) For Model Stemme S 12 gliders: Before further flight after
March 20, 2018 (the effective date of this AD), replace the front
gearbox following STEMME Procedural Specification Dok. Nr.: P320-
900060, as specified in STEMME Service Bulletin Dok. Nr.: P062-
980010, Issue: 01, both dated June 14, 2017.
(3) As of March 20, 2018 (the effective date of this AD), do not
install a front gear box listed in table 1 of paragraph (c) of this
AD.
(4) The service information for this AD allows the owner/
operator to do certain maintenance tasks. Also, the service
information specifies certain maintenance tasks be done by Stemme
AG. However, for this AD, we do not allow the owner/operator to do
any maintenance tasks; all maintenance tasks must be done by an
appropriately certified mechanic or maintenance shop. In addition,
we do not require any maintenance tasks be done specifically by
Stemme AG; any appropriately certified mechanic or maintenance shop
may do the tasks required by this AD.

(g) Other FAA AD Provisions

The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager,
Small Airplane Standards Branch, 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: Jim Rutherford, Aerospace Engineer,
FAA, Small Airplane Standards Branch, 901 Locust, Room 301, Kansas
City, Missouri 64106; telephone: (816) 329-4165; fax: (816) 329-
4090; email: jim.rutherford@faa.gov.
(i) 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.
(ii) AMOCs approved for AD 2017-10-11, Amendment 39-18885 (82 FR
24239, May 26, 2017) are approved as AMOCs for the corresponding
provisions of this AD.
(2) Contacting the Manufacturer: For any requirement in this AD
to obtain corrective actions from a manufacturer, the action must be
accomplished using a method approved by the Manager, Small Airplane
Standards Branch, FAA; or the European Aviation Safety Agency
(EASA).

(h) Related Information

Refer to MCAI European Aviation Safety Agency (EASA) AD No.
2017-0072-E, dated April 26, 2017, and Stemme AG Service Bulletin
No. P062-980010, dated April 21, 2017, for related information. You
may examine the MCAI on the internet at http://www.regulations.gov
by searching for and locating Docket No. https://www.regulations.gov/document?D=FAA-2017-0952-0002.

(i) Material Incorporated by Reference

(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the service information listed
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do
the actions required by this AD, unless this AD specifies otherwise.
(i) STEMME Service Bulletin Dok. Nr.: P062-980010, Issue: 01,
dated June 14, 2017.
(ii) STEMME Procedural Specification Dok. Nr.: P320-900060,
dated June 14, 2017.
(3) For Stemme AG service information identified in this AD,
contact STEMME AG, Flugplatzstrasse F2, Nr. 6-7, D-15344 Strausberg,
Germany; telephone: +49 (0) 3341 3612-0, fax: +49 (0) 3341 3612-30;
internet: https://www.stemme.com.
(4) You may view this service information at FAA, Policy and
Innovation Division, 901 Locust, Kansas City, Missouri 64106. For
information on the availability of this material at the FAA, call
816-329-4148. In addition, you can access this service information
on the internet at http://www.regulations.gov by searching for and
locating Docket No. FAA-2017-0639.
(5) You may view this service information that is incorporated
by reference 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/cfr/ibr-locations.html.

Issued in Kansas City, Missouri, on February 5, 2018.
Melvin J. Johnson,
Deputy Director, Policy & Innovation Division, Aircraft Certification
Service.
[FR Doc. 2018-02749 Filed 2-12-18; 8:45 am]
BILLING CODE 4910-13-P

6118 Federal Register / Vol. 83, No. 30 / Tuesday, February 13, 2018 / Rules and Regulations

principal inspector or local Flight Standards DEPARTMENT OF TRANSPORTATION FOR FURTHER INFORMATION CONTACT: Jim
District Office, as appropriate. If sending Rutherford, Aerospace Engineer, FAA,
information directly to the manager of the Federal Aviation Administration Small Airplane Standards Branch, 901
certification office, send it to the attention of Locust, Room 301, Kansas City,
the person identified in paragraph (q) of this 14 CFR Part 39 Missouri 64106; telephone: (816) 329–
AD. 4165; fax: (816) 329–4090; email:
[Docket No. FAA–2017–0952; Product
(2) Before using any approved AMOC, jim.rutherford@faa.gov.
Identifier 2017–CE–028–AD; Amendment
notify your appropriate principal inspector, 39–19189; AD 2018–03–16] SUPPLEMENTARY INFORMATION:
or lacking a principal inspector, the manager
of the local flight standards district office/ RIN 2120–AA64 Discussion
certificate holding district office. We issued a notice of proposed
Airworthiness Directives; Stemme AG
(q) Related Information rulemaking (NPRM) to amend 14 CFR
Gliders
part 39 by adding an AD that would
For more information about this AD, apply to all Stemme AG Model Stemme
AGENCY: Federal Aviation
contact Bobbie Kroetch, Aerospace Engineer, S10–VT gliders (type certificate
Administration (FAA), Department of
Wichita ACO Branch, 1801 Airport Road,
Transportation (DOT). previously held by Stemme GmbH & Co.
Room 100, Wichita, Kansas 67209; telephone:
ACTION: Final rule. KG) and all Stemme AG Model Stemme
(316) 946–4155; fax: (316) 946–4107; email:
S 12 gliders equipped with a certain
bobbie.kroetch@faa.gov or Wichita-COS@
SUMMARY: We are superseding front gearbox, part number 11AG. That
faa.gov.
Airworthiness Directive (AD) 2017–10– NPRM was published in the Federal
(r) Material Incorporated by Reference 11 for Stemme AG Model Stemme S10– Register on October 10, 2017 (82 FR
(1) The Director of the Federal Register VT gliders (type certificate previously 46938), and proposed to supersede AD
approved the incorporation by reference held by Stemme GmbH & Co. KG). This 2017–10–11, Amendment 39–18885 (82
(IBR) of the service information listed in this AD results from mandatory continuing FR 24239, May 26, 2017) (‘‘AD 2017–
paragraph under 5 U.S.C. 552(a) and 1 CFR airworthiness information (MCAI) 10–11’’).
part 51. issued by an aviation authority of Since we issued AD 2017–10–11, we
(2) You must use this service information another country to identify and address have type certificated Stemme AG
as applicable to do the actions required by an unsafe condition on an aviation Model Stemme S 12 gliders in the
this AD, unless this AD specifies otherwise. product. The MCAI describes the unsafe United States and have determined
(i) Textron Aviation Multi-engine condition as certain propeller front those model gliders should also be
Mandatory Service Letter MEL–57–01, dated transmission gear wheels having included in the applicability of AD
December 18, 2017 (includes the undated insufficient material strength because of 2017–10–11. In addition, Stemme AG
Attachment titled Spar Cap Inspection improper heat treatment during has issued new service information with
Results Form and Spar Cap Inspection manufacturing. We are issuing this AD procedures for addressing the unsafe
Results Form Continued). to require actions to address the unsafe condition.
(ii) Textron Aviation Conquest Mandatory condition on these products and to add Comments
Service Letter CQL–57–01, dated December Stemme AG Model Stemme S 12 gliders
18, 2017 (includes the undated Attachment to the Applicability section. We gave the public the opportunity to
titled Spar Cap Inspection Results Form and participate in developing this AD. The
DATES: This AD is effective March 20,
Spar Cap Inspection Results Form following presents the comment
2018.
Continued). received on the proposal and the FAA’s
The Director of the Federal Register
(3) For Textron Aviation service response to the comment.
approved the incorporation by reference
information identified in this AD, contact of certain publications listed in this AD Request for Manufacturer To Be
Textron Aviation Inc., Textron Aviation as of March 20, 2018. Responsible for All Associated Cost
Customer Service, One Cessna Blvd.,
ADDRESSES: You may examine the AD Taylor Ray stated that the
Wichita, Kansas 67215; telephone: (316) 517–
5800; email: customercare@txtav.com; docket on the internet at http:// manufacturer should be responsible for
internet: www.txtav.com. www.regulations.gov by searching for replacing the front gearbox on the
(4) You may view this service information and locating Docket No. FAA–2017– affected gliders at no cost to the owners/
at FAA, Policy and Innovation Division, 901 0952; or in person at Docket Operations, operators. We infer that the commenter
Locust, Kansas City, Missouri 64106. For U.S. Department of Transportation, M– is referring to the cost for both parts and
information on the availability of this 30, West Building Ground Floor, Room labor.
material at the FAA, call (816) 329–4148. W12–140, 1200 New Jersey Avenue SE, Taylor Ray stated that since the
(5) You may view this service information Washington, DC 20590. unsafe condition resulted from the
that is incorporated by reference at the For service information identified in manufacturing process, the
National Archives and Records this AD, contact STEMME AG, manufacturer should be responsible for
Administration (NARA). For information on Flugplatzstrasse F2, Nr. 6–7, D–15344 fixing the unsafe condition.
the availability of this material at NARA, call Strausberg, Germany; telephone: +49 (0) We neither agree nor disagree since
202–741–6030, or go to: http:// 3341 3612–0, fax: +49 (0) 3341 3612–30; the FAA does not get involved in who
www.archives.gov/federal-register/cfr/ibr- internet: https://www.stemme.com. You pays for the cost of mitigating an unsafe
locations.html. may view this referenced service condition. The primary concern the
information at the FAA, Policy and FAA has when issuing an AD is
Issued in Kansas City, Missouri, on
sradovich on DSK3GMQ082PROD with RULES

Innovation Division, 901 Locust, Kansas addressing unsafe conditions on various
February 2, 2018.
City, Missouri 64106. For information aircraft flying in the United States.
Melvin J. Johnson, on the availability of this material at the While we provide information related to
Deputy Director, Policy & Innovation Division, FAA, call (816) 329–4148. It is also the estimated labor and parts cost
Aircraft Certification Service. available on the internet at http:// associated with each AD, we do not
[FR Doc. 2018–02551 Filed 2–12–18; 8:45 am] www.regulations.gov by searching for control warranty coverage for owner/
BILLING CODE 4910–13–P Docket No. FAA–2017–0952. operators of the affected aircraft nor can

VerDate Sep<11>2014 15:52 Feb 12, 2018 Jkt 244001 PO 00000 Frm 00012 Fmt 4700 Sfmt 4700 E:\FR\FM\13FER1.SGM 13FER1

Federal Register / Vol. 83, No. 30 / Tuesday, February 13, 2018 / Rules and Regulations 6119

we mandate the manufacturer to cover Costs of Compliance appliances to the Director of the Policy
all associated costs. We have contacted According to the U.S. registry, we and Innovation Division.
Stemme AG about this issue. The have a total of 51 of both glider types Regulatory Findings
following is the response we received: registered, but there are still only 14
‘‘All costs will be paid by Stemme AG We determined that this AD will not
serial numbers of the part number 11AG
(parts + work) for customers who are have federalism implications under
front gearbox. Therefore, the most
affected within the one-year warranty. Executive Order 13132. This AD will
gliders that will be affected remains 14.
Customers who are out of the one-year not have a substantial direct effect on
According to Stemme AG, there are a
warranty will receive parts for free, but the States, on the relationship between
total of 4 of the affected front gearboxes
unfortunately, they have to pay for the the national government and the States,
on both glider types of U.S. registry (2
necessary work (approx. 10 working or on the distribution of power and
for each model).
hours).’’ Based on this response from responsibilities among the various
It will take an estimated 10 work-
Stemme AG, we revised the Cost of levels of government.
hours per product to comply with the
Compliance section in this AD. We For the reasons discussed above, I
basic requirements of this AD. The
changed the number of estimated work- certify this AD:
average labor rate is $85 per work-hour. (1) Is not a ‘‘significant regulatory
hours per product to replace the front Required parts will cost about $2,000
gearbox from 19 to 10, updated the total action’’ under Executive Order 12866,
per product. (2) Is not a ‘‘significant rule’’ under
cost on U.S. operators and cost per Based on these figures, if we consider
product based on this change, and the DOT Regulatory Policies and
the costs for all 14 affected gearboxes, Procedures (44 FR 11034, February 26,
added standard warranty information. then we estimate the cost of this AD on 1979),
Conclusion U.S. operators to be $39,990, or $2,850 (3) Will not affect intrastate aviation
We reviewed the relevant data, per product. in Alaska, and
considered the comment received, and According to the manufacturer, some (4) Will not have a significant
determined that air safety and the of the costs of this AD may be covered economic impact, positive or negative,
public interest require adopting this AD under warranty, thereby reducing the on a substantial number of small entities
as proposed except for changes stated cost impact on affected individuals. We under the criteria of the Regulatory
above. We have determined that these do not control warranty coverage for Flexibility Act.
changes: affected individuals. As a result, we
have included all costs in our cost Examining the AD Docket
• Are consistent with the intent that
was proposed in the NPRM for estimate. You may examine the AD docket on
addressing the unsafe condition; and Authority for This Rulemaking the internet at http://
• Do not add any additional burden www.regulations.gov by searching for
upon the public than was already Title 49 of the United States Code and locating Docket No. FAA–2017–
proposed in the NPRM. specifies the FAA’s authority to issue 0952; or in person at Docket Operations
rules on aviation safety. Subtitle I, between 9 a.m. and 5 p.m., Monday
Related Service Information Under 1 section 106, describes the authority of through Friday, except Federal holidays.
CFR Part 51 the FAA Administrator. ‘‘Subtitle VII: The AD docket contains the NPRM, the
Stemme AG has issued STEMME Aviation Programs,’’ describes in more regulatory evaluation, any comments
Service Bulletin Dok. Nr.: P062–980010, detail the scope of the Agency’s received, and other information. The
Issue: 01, dated June 14, 2017, and authority. street address for Docket Operations
STEMME Procedural Specification Dok. We are issuing this rulemaking under (telephone (800) 647–5527) is in the
Nr.: P320–900060, dated June 14, 2017. the authority described in ‘‘Subtitle VII, ADDRESSES section. Comments will be
In combination, the service information Part A, Subpart III, section 44701: available in the AD docket shortly after
describes procedures for replacing the General requirements.’’ Under that receipt.
front gearbox. This service information section, Congress charges the FAA with
is reasonably available because the promoting safe flight of civil aircraft in List of Subjects in 14 CFR Part 39
interested parties have access to it air commerce by prescribing regulations Air transportation, Aircraft, Aviation
through their normal course of business for practices, methods, and procedures safety, Incorporation by reference,
or by the means identified in the the Administrator finds necessary for Safety.
ADDRESSES section of this AD. safety in air commerce. This regulation
is within the scope of that authority Adoption of the Amendment
Differences Between This AD and the because it addresses an unsafe condition Accordingly, under the authority
Service Information that is likely to exist or develop on delegated to me by the Administrator,
The service information for this AD products identified in this rulemaking the FAA amends 14 CFR part 39 as
allows the owner/operator to do certain action. follows:
maintenance tasks. Also, the service This AD is issued in accordance with
information specifies certain authority delegated by the Executive PART 39—AIRWORTHINESS
maintenance tasks be done by Stemme Director, Aircraft Certification Service, DIRECTIVES
AG. However, for this AD, we do not as authorized by FAA Order 8000.51C.
allow the owner/operator to do any In accordance with that order, issuance ■ 1. The authority citation for part 39
maintenance tasks; all maintenance of ADs is normally a function of the continues to read as follows:
sradovich on DSK3GMQ082PROD with RULES

tasks must be done by an appropriately Compliance and Airworthiness Authority: 49 U.S.C. 106(g), 40113, 44701.
certified mechanic or maintenance Division, but during this transition
shop. In addition, we do not require any period, the Executive Director has § 39.13 [Amended]
maintenance tasks be done specifically delegated the authority to issue ADs ■ 2. The FAA amends § 39.13 by
by Stemme AG; any appropriately applicable to small airplanes, gliders, removing Amendment 39–18885 (82 FR
certified mechanic or maintenance shop balloons, airships, domestic business jet 24239, May 26, 2017), and adding the
may do the tasks required by this AD. transport airplanes, and associated following new AD:

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6120 Federal Register / Vol. 83, No. 30 / Tuesday, February 13, 2018 / Rules and Regulations

2018–03–16 Stemme AG: Amendment 39– (b) Affected ADs all serial numbers, and Stemme AG Model
19189; Docket No. FAA–2017–0952; This AD replaces AD 2017–10–11, Stemme S 12 gliders, all serial numbers, that
Product Identifier 2017–CE–028–AD. Amendment 39–18885 (82 FR 24239, May 26, are:
2017) (‘‘AD 2017–10–11’’). (1) Equipped with a front gearbox, part
(a) Effective Date
number (P/N) 11AG, with a serial number
(c) Applicability
This airworthiness directive (AD) becomes listed in table 1 to paragraph (c) of this AD;
effective March 20, 2018. This AD applies to Stemme AG Model and
Stemme S10–VT gliders (type certificate
(2) are certificated in any category.
previously held by Stemme GmbH & Co. KG),

TABLE 1 TO PARAGRAPH (c) OF THIS AD—AFFECTED P/N 11AG (FRONT GEARBOX) S/NS
80058/0814 80059/0915 80060/0915 80061/1115 80062/1215
80063/0116 80064/0416 80065/0616 80066/0716 80067/0916
80068/1016 80069/0117 80070/0217 80071/0217 ...........................................

Note 1 to paragraph (c) of this AD: Page 2 addition, we do not require any maintenance (i) STEMME Service Bulletin Dok. Nr.:
of Stemme AG Service Bulletin No. P062– tasks be done specifically by Stemme AG; P062–980010, Issue: 01, dated June 14, 2017.
980010, dated April 21, 2017, provides a any appropriately certified mechanic or (ii) STEMME Procedural Specification Dok.
pictorial of where the serial number of the maintenance shop may do the tasks required Nr.: P320–900060, dated June 14, 2017.
affected gearboxes are located. by this AD. (3) For Stemme AG service information
identified in this AD, contact STEMME AG,
(d) Subject (g) Other FAA AD Provisions Flugplatzstrasse F2, Nr. 6–7, D–15344
Air Transport Association of America The following provisions also apply to this Strausberg, Germany; telephone: +49 (0) 3341
(ATA) Code 61: Propellers/Propulsors. AD: 3612–0, fax: +49 (0) 3341 3612–30; internet:
(1) Alternative Methods of Compliance https://www.stemme.com.
(e) Reason (AMOCs): The Manager, Small Airplane (4) You may view this service information
This AD was prompted by mandatory Standards Branch, FAA, has the authority to at FAA, Policy and Innovation Division, 901
continuing airworthiness information (MCAI) approve AMOCs for this AD, if requested Locust, Kansas City, Missouri 64106. For
issued by the aviation authority of another using the procedures found in 14 CFR 39.19. information on the availability of this
country to identify and address an unsafe Send information to ATTN: Jim Rutherford, material at the FAA, call 816–329–4148. In
condition on an aviation product. The MCAI Aerospace Engineer, FAA, Small Airplane addition, you can access this service
describes the unsafe condition as certain Standards Branch, 901 Locust, Room 301, information on the internet at http://
propeller front transmission gear wheels Kansas City, Missouri 64106; telephone: www.regulations.gov by searching for and
having insufficient material strength because (816) 329–4165; fax: (816) 329–4090; email: locating Docket No. FAA–2017–0639.
of improper heat treatment during jim.rutherford@faa.gov. (5) You may view this service information
manufacturing. We are issuing this AD to add (i) Before using any approved AMOC on that is incorporated by reference at the
a model glider to the Applicability, any airplane to which the AMOC applies, National Archives and Records
paragraph (c) of this AD, and to prevent notify your appropriate principal inspector Administration (NARA). For information on
failure of the propeller front transmission (PI) in the FAA Flight Standards District the availability of this material at NARA, call
gear wheels. This failure could cause loss of Office (FSDO), or lacking a PI, your local 202–741–6030, or go to: http://
power between the engine and the propeller, FSDO. www.archives.gov/federal-register/cfr/ibr-
which could result in reduced control. (ii) AMOCs approved for AD 2017–10–11, locations.html.
Amendment 39–18885 (82 FR 24239, May 26, Issued in Kansas City, Missouri, on
(f) Actions and Compliance
2017) are approved as AMOCs for the February 5, 2018.
Unless already done, do the following corresponding provisions of this AD.
actions: Melvin J. Johnson,
(2) Contacting the Manufacturer: For any
(1) For Model Stemme S10–VT gliders: requirement in this AD to obtain corrective Deputy Director, Policy & Innovation Division,
Before further flight after June 15, 2017 (the actions from a manufacturer, the action must Aircraft Certification Service.
effective date of AD 2017–10–11), replace the be accomplished using a method approved [FR Doc. 2018–02749 Filed 2–12–18; 8:45 am]
front gearbox following STEMME Procedural by the Manager, Small Airplane Standards BILLING CODE 4910–13–P
Specification Dok. Nr.: P320–900060, as Branch, FAA; or the European Aviation
specified in STEMME Service Bulletin Dok. Safety Agency (EASA).
Nr.: P062–980010, Issue: 01, both dated June
(h) Related Information DEPARTMENT OF TRANSPORTATION
14, 2017.
(2) For Model Stemme S 12 gliders: Before Refer to MCAI European Aviation Safety Federal Aviation Administration
further flight after March 20, 2018 (the Agency (EASA) AD No. 2017–0072–E, dated
effective date of this AD), replace the front April 26, 2017, and Stemme AG Service
gearbox following STEMME Procedural Bulletin No. P062–980010, dated April 21,
14 CFR Part 39
Specification Dok. Nr.: P320–900060, as 2017, for related information. You may [Docket No. FAA–2017–0694; Product
specified in STEMME Service Bulletin Dok. examine the MCAI on the internet at http:// Identifier 2017–NM–007–AD; Amendment
Nr.: P062–980010, Issue: 01, both dated June www.regulations.gov by searching for and 39–19192; AD 2018–03–19]
14, 2017. locating Docket No. https://
(3) As of March 20, 2018 (the effective date www.regulations.gov/document?D=FAA- RIN 2120–AA64
of this AD), do not install a front gear box 2017-0952-0002.
listed in table 1 of paragraph (c) of this AD. Airworthiness Directives; Dassault
(4) The service information for this AD (i) Material Incorporated by Reference Aviation Airplanes
sradovich on DSK3GMQ082PROD with RULES

allows the owner/operator to do certain (1) The Director of the Federal Register
maintenance tasks. Also, the service approved the incorporation by reference AGENCY: Federal Aviation
information specifies certain maintenance (IBR) of the service information listed in this Administration (FAA), Department of
tasks be done by Stemme AG. However, for paragraph under 5 U.S.C. 552(a) and 1 CFR Transportation (DOT).
this AD, we do not allow the owner/operator part 51. ACTION: Final rule.
to do any maintenance tasks; all maintenance (2) You must use this service information
tasks must be done by an appropriately as applicable to do the actions required by SUMMARY: We are adopting a new
certified mechanic or maintenance shop. In this AD, unless this AD specifies otherwise. airworthiness directive (AD) for certain

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Document Created: 2018-02-13 02:32:28
Document Modified: 2018-02-13 02:32:28

Category		Regulatory Information
Collection		Federal Register
sudoc Class		AE 2.7: GS 4.107: AE 2.106:
Publisher		Office of the Federal Register, National Archives and Records Administration
Section		Rules and Regulations
Action		Final rule.
Dates		This AD is effective March 20, 2018.
Contact		Jim Rutherford, Aerospace Engineer, FAA, Small Airplane Standards Branch, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4165; fax: (816) 329-4090; email: [email protected]
FR Citation		83 FR 6118
RIN Number		2120-AA64
CFR Associated		Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

83 FR 6118 - Airworthiness Directives; Stemme AG Gliders

DEPARTMENT OF TRANSPORTATIONFederal Aviation Administration

Federal Register Volume 83, Issue 30 (February 13, 2018)

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration