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Federal Register / Vol. 86, No. 244 / Thursday, December 23, 2021 / Rules and Regulations Helicopters Alert Service Bulletin No.
EC22571A019, Revision 1, dated February 28, 2019.
i Special Flight Permits Special flight permits may be permitted provided that there are no passengers on board.

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k Related Information 1 For more information about this AD, contact Hal Jensen, Aerospace Engineer, Operational Safety Branch, Compliance &
Airworthiness Division, FAA, 950 LEnfant Plaza N SW, Washington, DC 20024;
telephone 202 2679167; email hal.jensen@
faa.gov.
2 The subject of this AD is addressed in European Union Aviation Safety Agency EASA AD 20210156, dated July 2, 2021.
You may view the EASA AD at https
www.regulations.gov in Docket No. FAA
20200904.
l Material Incorporated by Reference 1 The Director of the Federal Register approved the incorporation by reference of the service information listed in this paragraph under 5 U.S.C. 552a 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 Airbus Helicopters Alert Service Bulletin No. EC22571A019, Revision 2, dated May 21, 2021.
ii Reserved 3 For service information identified in this AD, contact Airbus Helicopters, 2701 N
Forum Drive, Grand Prairie, TX 75052;
telephone 972 6410000 or 800 2320323;
fax 972 6413775; or at https
www.airbus.com/helicopters/services/
technical-support.html.
4 You may view this service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 817 2225110.
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: fr.inspection@nara.gov, or go to:

19:16 Dec 22, 2021

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Issued on December 8, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202127638 Filed 122221; 8:45 am
j 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 International Validation Branch, send it to the attention of the person identified in paragraph k1 of this AD.
Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov.
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.

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https www.archives.gov/federal-register/cfr/
ibr-locations.html.

BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210792; Project Identifier AD202000593G; Amendment 3921840; AD 20212419
RIN 2120AA64

Airworthiness Directives; DG
Flugzeugbau GmbH Gliders Federal Aviation Administration FAA, DOT.
ACTION: Final rule.
AGENCY:

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Examining the AD Docket You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210792; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal 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, M30, West Building Ground Floor, Room W12140, 1200
New Jersey Avenue SE, Washington, DC
20590.
Jim Rutherford, Aviation Safety Engineer, General Aviation & Rotorcraft Section, International Validation Branch, FAA, 901 Locust, Room 301, Kansas City, MO
64106; phone: 816 3294165; fax: 816
3294090; email: jim.rutherford@
faa.gov.

FOR FURTHER INFORMATION CONTACT:

SUPPLEMENTARY INFORMATION:

The FAA is adopting a new airworthiness directive AD for all DG
Flugzeugbau GmbH Model DG500MB
and DG1000M gliders with a Solo Kleinmotoren GmbH Solo Model 2625
02i engine installed. 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 error in the engine control unit ECU software. This AD
requires updating the ECU software. 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 Solo Kleinmotoren GmbH, Postfach 600152, D71050 Sindelfingen, Germany; phone:
+49 703 13010; fax: +49 703 1301136;
email: aircraft@solo-germany.com;
website: https aircraft.solo.global/gb/.
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 https
www.regulations.gov by searching for and locating Docket No. FAA2021
0792.
SUMMARY:

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Background The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to all DG Flugzeugbau GmbH
Model DG500MB and DG1000M
gliders with a Solo Kleinmotoren GmbH
Solo Model 2625 02i engine installed.
The NPRM published in the Federal Register on September 17, 2021 86 FR
51838. 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 20200056, dated March 13, 2020 referred to after this as the MCAI, to address an unsafe condition on Solo Kleinmotoren GmbH
Solo Model 2625 02 engines, variation 02i with electronic fuel injection, installed on but not limited to Binder Motorenbau, DG-Flugzeugbau, and Schempp-Hirth powered sailplanes gliders. The MCAI states:
An error was found in the ECU affected SW
software that can cause brief injection of fuel into one cylinder when the ECU is activated.
This condition, if not corrected, could increase the time needed to restart the engine in flight, possibly resulting in reduced control of the powered sailplane.
To address this potential unsafe condition, SOLO Kleinmotoren GmbH, together with the ECU manufactuerer sic, developed an ECU
SW update and issued the SB service bulletin accordingly, providing installation instructions.
For the reason described above, this EASA AD requires an update of the ECU
software.

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