Rule2021-27774
Airworthiness Directives; Stemme AG Gliders
Primary source
Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.
Published
December 23, 2021
Effective
January 27, 2022
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is adopting a new airworthiness directive (AD) for all Stemme AG Model Stemme S 12 gliders. This AD was prompted by mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as an airspeed indicator (ASI) with speed markings inconsistent with the approved and published values. This AD requires inspecting the ASI markings and, depending on findings, either replacing the ASI or amending the existing aircraft flight manual (AFM) until the ASI is replaced. The FAA is issuing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 86 Issue 244 (Thursday, December 23, 2021)</title>
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[Federal Register Volume 86, Number 244 (Thursday, December 23, 2021)]
[Rules and Regulations]
[Pages 72836-72838]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2021-27774]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0716; Project Identifier 2019-CE-023-AD; Amendment
39-21799; AD 2021-23-01]
RIN 2120-AA64
Airworthiness Directives; Stemme AG Gliders
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all
Stemme AG Model Stemme S 12 gliders. This AD was prompted by mandatory
continuing airworthiness information (MCAI) issued by the aviation
authority of another country to identify and correct an unsafe
condition on an aviation product. The MCAI describes the unsafe
condition as an airspeed indicator (ASI) with speed markings
inconsistent with the approved and published values. This AD requires
inspecting the ASI markings and, depending on findings, either
replacing the ASI or amending the existing aircraft flight manual (AFM)
until the ASI is replaced. The FAA is issuing this AD to address the
unsafe condition on these products.
DATES: This AD is effective January 27, 2022.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of January 27,
2022.
ADDRESSES: For service information identified in this final rule,
contact STEMME AG, Flugplatzstrasse F2, Nr. 6-7, D-15344 Strausberg,
Germany; phone: +49 (0) 3341 3612-0; fax: +49 (0) 3341 3612-30; email:
<a href="/cdn-cgi/l/email-protection#6e0f071c19011c1a0607000b1d1d2e1d1a0b03030b400a0b"><span class="__cf_email__" data-cfemail="b7d6dec5c0d8c5c3dfded9d2c4c4f7c4c3d2dadad299d3d2">[email protected]</span></a>; website: <a href="https://www.stemme.com">https://www.stemme.com</a>. You may view
this service information at the FAA, Airworthiness Products Section,
Operational Safety Branch, 901 Locust, Kansas City, MO 64106. For
information on the availability of this material at the FAA, call (816)
329-4148. It is also available at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by
searching for and locating Docket No. FAA-2021-0716.
Examining the AD Docket
You may examine the AD docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by
searching for and locating Docket No. FAA-2021-0716; or in person at
Docket Operations between 9 a.m. and 5 p.m., Monday through Friday,
except Federal
[[Page 72837]]
holidays. The AD docket contains this final rule, the MCAI, any
comments received, and other information. The address for Docket
Operations is U.S. Department of Transportation, Docket Operations, M-
30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue
SE, Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT: Jim Rutherford, Aviation Safety
Engineer, General Aviation & Rotorcraft Section, International
Validation Branch, FAA, 901 Locust, Room 301, Kansas City, MO 64106;
phone: (816) 329-4165; fax: (816) 329-4090; email:
<a href="/cdn-cgi/l/email-protection#6f050602411d1a1b070a1d09001d0b2f090e0e41080019"><span class="__cf_email__" data-cfemail="f79d9e9ad98582839f928591988593b7919696d9909881">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Discussion
The FAA 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 S 12 gliders. The NPRM published in the Federal Register on
August 27, 2021 (86 FR 48065). The NPRM was prompted by MCAI originated
by the European Union Aviation Safety Agency (EASA), which is the
Technical Agent for the Member States of the European Union. EASA
issued EASA AD 2019-0082, dated April 12, 2019 (referred to after this
as ``the MCAI''), to address an unsafe condition on Stemme AG Model
Stemme S 12 gliders. The MCAI states:
During a production inspection of a new powered sailplane, an
ASI was found with speed markings inconsistent with the approved and
published values (begin[ning] of the white and green arc).
Subsequent investigation of the production records for delivered
Stemme S 12 powered sailplanes does not exclude that a similar, non-
conforming ASI was installed during production.
This condition, if not corrected, could lead to erroneous
information being provided to the pilot, particularly at the lower
speed operation limits, possibly resulting in reduced control of the
powered sailplane.
To address this unsafe condition, Stemme AG issued the SB
[service bulletin] to provide inspections instructions.
For the reason described above, this [EASA] AD requires a one-
time inspection of the markings of the affected part and, depending
on findings, amending the Aircraft Flight Manual (AFM) and replacing
the affected part. This [EASA] AD also prohibits installation of
affected parts.
You may examine the MCAI in the AD docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching for and locating Docket No. FAA-2021-
0716.
Discussion of Final Airworthiness Directive
Comments
The FAA received no comments on the NPRM or on the determination of
the costs.
Conclusion
This product has been approved by the aviation authority of another
country and is approved for operation in the United States. Pursuant to
the FAA's bilateral agreement with this State of Design Authority, it
has notified the FAA of the unsafe condition described in the MCAI and
service information referenced above. The FAA reviewed the relevant
data and determined that air safety requires adopting this AD as
proposed. Accordingly, the FAA is issuing this AD to address the unsafe
condition on these products. This AD is adopted as proposed in the
NPRM.
Related Service Information Under 1 CFR Part 51
The FAA reviewed Stemme Service Bulletin No. P062-980027, Revision
00, dated December 17, 2018. The service information specifies checking
the ASI markings and provides illustrations of correct markings. The
service information specifies the procedure to replace an affected ASI
with an ASI with correct markings. The service information also
includes a temporary page to insert into the AFM until the ASI is
replaced. 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 ADDRESSES.[FEDREG][VOL]*[/
VOL][NO]*[/NO][DATE]*[/DATE][RULES][RULE][PREAMB][AGENCY]*[/
AGENCY][SUBJECT]*[/SUBJECT][/PREAMB][SUPLINF][HED]*[/HED]
Costs of Compliance
The FAA estimates that this AD affects 20 gliders of U.S. registry.
The FAA estimates it would take about 0.5 work-hour per glider to
comply with the inspection requirements of this AD. The average labor
rate is $85 per work-hour.
Based on these figures, the FAA estimates the cost of this AD on
U.S. operators to be $850 or $42.50 per glider.
The FAA estimates that amending the AFM to insert and then remove
the temporary page as a result of the inspection would take about 1
work-hour per glider for a total cost of $85 per glider. The FAA
estimates that replacing the ASI would take about 3.5 work-hours and
require parts costing $603, for a total cost of $900.50 per glider. The
FAA has no way of determining the number of gliders that may need these
actions.
The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some of the costs of this AD
may be covered under warranty, thereby reducing the cost impact on
affected operators.
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.
The FAA is 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
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. For the reasons discussed above, I certify this AD:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Will not affect intrastate aviation in Alaska, 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.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
The Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 14 CFR part 39 as follows:
[[Page 72838]]
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 adding the following new airworthiness
directive:
2021-23-01 Stemme AG: Amendment 39-21799; Docket No. FAA-2021-0716;
Project Identifier 2019-CE-023-AD.
(a) Effective Date
This airworthiness directive (AD) is effective January 27, 2022.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Stemme AG Model Stemme S 12 gliders, all
serial numbers, certificated in any category.
(d) Subject
Joint Aircraft System Component (JASC) Code 3414, Airspeed/Mach
Indicator.
(e) Unsafe Condition
This AD was prompted by mandatory continuing airworthiness
information (MCAI) issued by the aviation authority of another
country to identify and correct an unsafe condition on an aviation
product. The MCAI describes the unsafe condition as an airspeed
indicator (ASI) with speed markings inconsistent with the approved
and published values (beginning of the white and green arc). The FAA
is issuing this AD to prevent erroneous information being provided
to the pilot, particularly at the lower speed operation limits. The
unsafe condition, if not addressed, could result in reduced control
of the glider.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
(1) Within 30 days after the effective date of this AD, inspect
ASI part number (P/N) IF-W230 or IF-W190 for incorrect markings in
accordance with the table in the Appendix, ``2.3. Airspeed Indicator
Markings,'' of Stemme Service Bulletin No. P062-980027, Revision 00,
dated December 17, 2018 (the SB). If an ASI marking is incorrect,
before further flight, perform one of the following:
(i) Replace the ASI by following the Actions, Action 2, of the
SB; or
(ii) Amend the existing aircraft flight manual (AFM) for your
glider by inserting the Appendix, temporary page 2-3 SB, ``2.3.
Airspeed Indicator Markings,'' of the SB. Within 3 months after
amending the AFM, replace the ASI by following the Actions, Action
2, of the SB and remove temporary page 2-3 SB, ``2.3. Airspeed
Indicator Markings,'' from the AFM.[FEDREG][VOL]*[/VOL][NO]*[/
NO][DATE]*[/DATE][RULES][RULE][PREAMB][AGENCY]*[/AGENCY][SUBJECT]*[/
SUBJECT][/PREAMB][SUPLINF][HED]*[/HED]
(2) As of the effective date of this AD, do not install ASI P/N
IF-W230 or IF-W190 on any glider unless it has passed the inspection
required by this AD.
(h) Alternative Methods of Compliance (AMOCs)
(1) The Manager, International Validation Branch, FAA, has the
authority to approve AMOCs for this AD, if requested using the
procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19,
send your request to your principal inspector or local Flight
Standards District Office, as appropriate. If sending information
directly to the manager of the certification office, send it to the
attention of the person identified in paragraph (i)(1) of this AD or
email: <a href="/cdn-cgi/l/email-protection#30091d7166631d7179621d0703001d717d7f73705651511e575f46"><span class="__cf_email__" data-cfemail="172e3a5641443a565e453a2024273a565a58545771767639707861">[email protected]</span></a>.
(2) Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the local flight standards district office/certificate holding
district office.
(i) Related Information
(1) For more information about this AD, contact Jim Rutherford,
Aviation Safety Engineer, General Aviation & Rotorcraft Section,
International Validation Branch, FAA, 901 Locust, Room 301, Kansas
City, MO 64106; phone: (816) 329-4165; fax: (816) 329-4090; email:
<a href="/cdn-cgi/l/email-protection#563c3f3b782423223e3324303924321630373778313920"><span class="__cf_email__" data-cfemail="d0bab9bdfea2a5a4b8b5a2b6bfa2b490b6b1b1feb7bfa6">[email protected]</span></a>.
(2) Refer to European Union Aviation Safety Agency (EASA) AD
2019-0082, dated April 12, 2019, for more information. You may
examine the EASA AD in the AD docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a>
by searching for and locating it in Docket No. FAA-2021-0716.
(j) 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 the AD specifies otherwise.
(i) Stemme Service Bulletin No. P062-980027, Revision 00, dated
December 17, 2018.
Note 1 to paragraph (j)(2)(i): This service information has Feb-
29 and July 14, 2017, in the footer of every page on the document.
Feb-29 refers to the form number and July 14, 2017, is the revision
date of the form used to write the service information. The
signature block on the bottom of page 1 contains a release date and
an approval date. For enforceability purposes, the FAA will cite the
Stemme AG service information using the release date of December 17,
2018, that is used in EASA AD 2019-0082, dated April 12, 2019.
Note 2 to paragraph (j)(2)(i): This service information contains
German to English translation. EASA used the English translation in
referencing the document from Stemme AG. For enforceability
purposes, the FAA will cite the Stemme AG service information in
English as it appears on the document.
(ii) [Reserved]
(3) For service information identified in this AD, contact
STEMME AG, Flugplatzstrasse F2, Nr. 6-7, D-15344 Strausberg,
Germany; phone: +49 (0) 3341 3612-0; fax: +49 (0) 3341 3612-30;
email: <a href="/cdn-cgi/l/email-protection#e6878f94918994928e8f88839595a69592838b8b83c88283"><span class="__cf_email__" data-cfemail="d6b7bfa4a1b9a4a2bebfb8b3a5a596a5a2b3bbbbb3f8b2b3">[email protected]</span></a>; website: <a href="https://www.stemme.com">https://www.stemme.com</a>.
(4) You may view this service information at FAA, Airworthiness
Products Section, Operational Safety Branch, 901 Locust, Kansas
City, MO 64106. For information on the availability of this material
at the FAA, call (816) 329-4148.
(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, email: <a href="/cdn-cgi/l/email-protection#2442560a4d4a57544147504d4b4a644a4556450a434b52"><span class="__cf_email__" data-cfemail="fc9a8ed295928f8c999f88959392bc929d8e9dd29b938a">[email protected]</span></a>, or go to: <a href="https://www.archives.gov/federal-register/cfr/ibr-locations.html">https://www.archives.gov/federal-register/cfr/ibr-locations.html</a>.
Issued on October 25, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-27774 Filed 12-22-21; 8:45 am]
BILLING CODE 4910-13-P[FEDREG][VOL]*[/VOL][NO]*[/NO][DATE]*[/
DATE][RULES]
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