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Federal Register / Vol. 86, No. 244 / Thursday, December 23, 2021 / Rules and Regulations
You may examine the MCAI in the AD docket at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0792.
The Model 2625 02i engine does not have an FAA type certificate. For Model DG1000M gliders, this engine is part of the glider type certification. For Model DG500MB gliders, this engine may be installed as a Model 2525 02 engine modified with a fuel injection system and re-identified as a Model 2625 02i engine.
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 FAAs 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.

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Related Service Information Under 1
CFR Part 51
The FAA reviewed Solo Kleinmotoren GmbH Service Bulletin No. 460011, Ausgabe 1 English translation: Issue 1, dated August 19, 2019. This service information specifies procedures for updating the ECU software to a version that fixes a software error found in previous ECU software versions. 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.
Costs of Compliance The FAA estimates that this AD
affects 4 gliders of U.S. registry. The FAA estimates that it would take about 2 work-hours per glider to comply with the 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 $680 or $170 per glider.
Authority for This Rulemaking Title 49 of the United States Code specifies the FAAs authority to issue
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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 Agencys 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:
PART 39AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:

Authority: 49 U.S.C. 106g, 40113, 44701.
39.13

Amended
2. The FAA amends 39.13 by adding the following new airworthiness directive:

20212419 DG Flugzeugbau GmbH:
Amendment 3921840; Docket No.

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FAA20210792; Project Identifier AD
202000593G.
a Effective Date This airworthiness directive AD is effective January 27, 2022.
b Affected ADs None.
c Applicability This AD applies to DG Flugzeugbau GmbH
Model DG500MB and DG1000M gliders, all serial numbers, certificated in any category, with a Solo Kleinmotoren GmbH
Solo Model 2625 02i engine installed.
d Subject Joint Aircraft System Component JASC
Code 7300, Engine Fuel and Control.
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 error in the engine control unit ECU software. The FAA is issuing this AD to prevent an injection of fuel into one cylinder when the ECU is activated. The unsafe condition, if not addressed, could result in difficulty starting the engine and reduced control of the glider.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions 1 Within 3 months after the effective date of this AD, update the ECU software to software version V517 Revision 8 in accordance with the Actions in Solo Kleinmotoren GmbH Service Bulletin No.
460011, Ausgabe 1 English translation:
Issue 1, dated August 19, 2019.
2 As of the effective date of this AD, do not install ECU software version V517
Revision 7 or earlier on any glider with a Solo Kleinmotoren GmbH Solo Model 2625
02i engine.
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 i1 of this AD or email: 9-AVS-AIR-730-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.
i Related Information 1 For more information about this AD, contact Jim Rutherford, Aviation Safety
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