2025-24-07: Passenger/Crew Doors

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: 2025-24-07 Diamond Aircraft Industries GmbH: Amendment 39-23204; Docket No. FAA-2025-2263; Project Identifier MCAI-2024-00729-A. (a) Effective Date This airworthiness directive (AD) is effective February 12, 2026. (b) Affected ADs None. (c) Applicability This AD applies to all Diamond Aircraft Industries GmbH (DAI) Model DA 42, DA 42 NG, and DA 42 M-NG airplanes, certificated in any category. (d) Subject Joint Aircraft System Component (JASC) Code 5210, Passenger/Crew Doors. (e) Unsafe Condition This AD was prompted several reports of passenger door separation from the fuselage. The FAA is issuing this AD to address this unsafe condition. The unsafe condition, if not addressed, could result in damage to the aircraft, loss of control of the aircraft, injuries to persons, and damage to property on the ground. (f) Definition For the purposes of this AD, "the Diamond Aircraft work instruction" is defined as Diamond Aircraft Work Instruction WI-MSB 42-149 and WI-MSB 42NG-095, Revision 2, dated January 17, 2025 (issued as one document), attached to Diamond Aircraft Mandatory Service Bulletin MSB 42-149 and MSB 42NG-095, dated December 2, 2024 (issued as one document). (g) Applicable AFM Temporary Revisions (1) For Model DA 42 airplanes without OAM 42-102: Diamond Aircraft Temporary Revision TR-MAM-42-1333, for the DA 42 Airplane Flight Manual (AFM), Doc. No. 7.01.05-E, dated November 28, 2024. (2) For Model DA 42 airplanes with OAM 42-102, Garmin GFC 700: Diamond Aircraft Temporary Revision TR-MAM-42-1333, for the DA 42 with OAM 42-102 Garmin GFC 700 AFM, Doc. No. 7.01.06-E, dated November 28, 2024. (3) For Model DA 42 NG and DA 42 NG-M airplanes without MAM 42-600 Performance Enhancement: Diamond Aircraft Temporary Revision TR-MAM-42-1333, for the DA 42 NG AFM, Doc. No. 7.01.15-E, dated November 28, 2024. (4) For Model DA 42 NG and DA 42 NG-M airplanes with MAM 42-600 Performance Enhancement: Diamond Aircraft Temporary Revision TR-MAM-42-1333, for the DA 42 NG AFM, Doc. No. 7.01.16-E, dated November 28, 2024. (h) Compliance Comply with this AD within the compliance times specified, unless already done. (i) Required Actions (1) Within 50 hours time-in-service (TIS) or 50 days, whichever occurs first after the effective date of this AD, revise the existing AFM for your airplane to include the information specified in the applicable AFM temporary revision specified in paragraphs (g)(1) through (4) of this AD appropriate for your airplane model. (i) The owner/operator (pilot) holding at least a private pilot certificate may revise the existing AFM for your airplane and must enter compliance with the applicable paragraph of this AD into the airplane maintenance records in accordance with 14 CFR 43.9(a) and 14 CFR 91.417(a)(2)(v). The record must be maintained as required by 14 CFR 91.417, 121.380, or 135.439. (ii) The AFM revision required by paragraph (i)(1) of this AD may be accomplished before the initial inspection and modification required by paragraph (i)(2) of this AD for that airplane. (2) Within 50 hours TIS or 50 days, whichever occurs first after the effective date of this AD, accomplish the initial inspection of the safety hook, safety hook spring, retaining bracket, safety hook actuation pin, latching mechanism spring, latching bolts, and gas spring and the modification of the airplane with placards in accordance with the instructions of Section III, steps 2 through 4, 6, 7, 9 through 11, 13, 14, 16, 18, 19, 21 through 23, and 25 through 36 in the Diamond Aircraft work instruction specified in paragraph (f) of this AD. (3) Within 200 hours TIS or 12 months, whichever occurs first after the initial inspection required by paragraph (i)(2) of this AD, and thereafter at intervals not to exceed 210 hours TIS or 13 months, whichever occurs first, accomplish the repetitive inspections of the airplane in accordance with the instructions of Section IV, steps 2 through 6, of the Diamond Aircraft work instruction specified in paragraph (f) of this AD. (4) If, during any inspection as required by paragraph (i)(2) or (3) of this AD, any findings, as defined in Section III, steps 2 through 4, 6, 7, 9 through 11, 13, 14, 16, 18, 19, 21 through 23, and 25 through 36, and Section IV, steps 2 through 5, of the Diamond Aircraft work instruction is identified, before further flight, accomplish the applicable corrective action(s) in accordance with the instructions of Section III, steps 2 through 4, 6, 7, 9 through 11, 13, 14, 16, 18, 19, 21 through 23, and 25 through 36, and Section IV, steps 2 through 5, of the Diamond Aircraft work instruction specified in paragraph (f) of this AD. Where instructed to contact the manufacturer "in case of doubt" or for approved instructions, this AD requires before further flight using instructions approved by the Manager, International Validation Branch, FAA; the European Union Aviation Safety Agency (EASA); or DAI's EASA Design Organization Approval (DOA) and within the compliance time specified therein, accomplishing those instructions. If approved by the DOA, the approval must include the DOA-authorized signature. (j) Reporting (1) Within 30 days after performing the initial inspection required by paragraph (i)(2) of this AD or within 30 days after the effective date of this AD, whichever occurs later, report the results of the initial inspection, including no findings, to DAI. The report must include the information specified in Appendix B of the Diamond Aircraft work instruction specified in paragraph (f) of this AD. (2) Report the results of each repetitive inspection required by paragraph (i)(3) of this AD, including no findings, to DAI within 30 days after that inspection. The report must include the information specified in Appendix B of the Diamond Aircraft work instruction specified in paragraph (f) of this AD. (k) Credit for Previous Actions You may take credit for the actions required by paragraph (i) of this AD if you performed those actions before the effective date of this AD using Diamond Aircraft Mandatory Service Bulletin MSB 42-149 and MSB 42NG-095, dated December 2, 2024 (issued as one document), published with Diamond Aircraft Work Instructions WI-MSB 42-149 and WI-MSB 42NG-095, Revision 1, dated December 5, 2024 (issued as one document), attached. (l) 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 (m)(1) of this AD and email to: AMOC@faa.gov. 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. (m) Additional Information (1) For more information about this AD, contact Evan Weaver, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: (316) 944-8910; email: evan.p.weaver@faa.gov. (2) Material identified in this AD that is not incorporated by reference is available at the address specified in paragraph (n)(3) of this AD. (n) 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) Diamond Aircraft Mandatory Service Bulletin MSB 42-149 and MSB 42NG-095, dated December 2, 2024 (issued as one document), published with Diamond Aircraft Work Instruction WI-MSB 42-149 and WI-MSB 42NG-095, Revision 2, dated January 17, 2025 (issued as one document), attached. (ii) Diamond Aircraft Temporary Revision TR-MAM-42-1333, for the DA 42 Airplane Flight Manual (AFM), Doc. No. 7.01.05-E, dated November 28, 2024. (iii) Diamond Aircraft Temporary Revision TR-MAM-42-1333, for the DA 42 with OAM 42-102 Garmin GFC 700 AFM, Doc. No. 7.01.06-E, dated November 28, 2024. (iv) Diamond Aircraft Temporary Revision TR-MAM-42-1333, for the DA 42 NG AFM, Doc. No. 7.01.15-E, dated November 28, 2024. (v) Diamond Aircraft Temporary Revision TR-MAM-42-1333, for the DA 42 NG AFM, Doc. No. 7.01.16-E, dated November 28, 2024. (3) For Diamond Aircraft material identified in this AD, contact Diamond Aircraft Industries GmbH, N.A. Otto-Stra?e 5, A-2700 Wiener Neustadt, Austria; phone: +43 2622 26700; email: office@diamond-air.at; website: diamondaircraft.com/ . (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-locationsoremailfr.inspection@nara.gov. Issued on January 6, 2026. Paul R. Bernado, Acting Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2026-00163 Filed 1-7-26; 8:45 am]BILLING CODE 4910-13-P