2025-13-08: Powerplant System

1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. 2. The FAA amends § 39.13 by adding the following new airworthiness directive: 2025-13-08 DG Aviation GmbH (Type Certificate Previously Held by DG Flugzeugbau GmbH): Amendment 39-23074; Docket No. FAA-2025-1119; Project Identifier MCAI-2025-00914-G. (a) Effective Date This airworthiness directive (AD) is effective July 25, 2025. (b) Affected ADs None. (c) Applicability This AD applies to DG Aviation GmbH (type certificate previously held by DG Flugzeugbau GmbH) Model DG-1000T gliders, certificated in any category. (d) Subject Joint Aircraft System Component (JASC) Code 7100, Powerplant System. (e) Unsafe Condition This AD was prompted by reports of propeller separation. The FAA is issuing this AD to detect and address failure of a propeller. The unsafe condition, if not addressed, could lead to separation of the propeller, which could result in reduced or loss of control of the glider or the propeller impacting the glider, passengers in the glider, or people on the ground. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions Within 3 days after the effective date of this AD, comply with either paragraph (g)(1) or (2) of this AD. (1) Revise the flight manual for your glider and install "Motor INOP" placards in accordance with paragraphs 1 and 3 of the Instructions in DG aviation GmbH Service Information No. 116-25, Issue 01.b, dated May 12, 2025. The owner/operator (pilot) holding at least a private pilot certificate may revise the existing flight manual and must enter compliance with the applicable paragraph of this AD into the glider maintenance records in accordance with 14 CFR 43.9(a) and 91.417(a)(2)(v). The record must be maintained as required by 14 CFR 91.417, 121.380, or 135.439. (2) Remove the powerplant from the glider. (h) Credit for Previous Actions This paragraph provides credit for the actions required by paragraph (g)(1) of this AD, if those actions were performed before the effective date of this AD using DG aviation GmbH Service Information No. 116-25, Doc No. SI 116-25 FE-30-01, Issue 01.a, dated May 5, 2025. (i) Special Flight Permits Special flight permits are prohibited. (j) Alternative Methods of Compliance (AMOCs) 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 (k) of this AD and email to: [email protected]. 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. (k) Additional Information For more information about this AD, contact Dan McCully, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: (404) 474-5548; email: [email protected]. (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference of the material listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this material as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) DG aviation GmbH Service Information No. 116-25, Issue 01.b, dated May 12, 2025. (ii) [Reserved] (3) For DG Aviation GmbH material identified in this AD, contact DG Aviation GmbH, Rita Rodrigues, Otto Lilienthal Weg 2/Am Flugplatz, Bruchsal, Germany; phone: +49 (0) 7251 36660-32; email: [email protected]; website: https://www.dg-aviation.de/en/dg-flugzeugbau/contact. (4) You may view this material 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 (817) 222-5110. (5) You may view this material at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email [email protected]. Issued on June 27, 2025. Steven W. Thompson, Acting Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2025-12875 Filed 7-8-25; 4:15 pm]BILLING CODE 4910-13-P