Airworthiness Directive

AD 2026-16-11: Reciprocating Engine Front Section

Airworthiness Directives; BRP-Rotax GmbH & Co KG (Formerly BRP-Powertrain GMBH & CO KG and Bombardier-Rotax GmbH) Engines and Various Aircraft

Effective: Aug 28, 2026
Published: Aug 13, 2026
Registered aircraft: 121

Models this AD may apply to

AI-extracted — verify against original

Matched from the AD's applicability section. Applicability must be confirmed by a mechanic against the aircraft's records.

Engines

BRP-ROTAX 914 F2
BRP-ROTAX 914 F3
BRP-ROTAX 914 F4
ROTAX 912F3
ROTAX 912S3

Serial numbers per Rotax Alert Service Bulletin ASB-2026-001R00, Chapter 4) Appendix, paragraphs 4.1) and 4.2). Only with: Engines with an installed propeller gearbox whose serial number is listed in Rotax ASB-2026-001R00 (installed on delivery or supplied as a spare part); 912 A1, A2, A3 engines only when installed on the aircraft in Table 1 (AMT-200, HK 36 R, HK 36 TC/TS, DA20-A1, DV 20 KATANA, Sky Arrow 650 TC, SF 25C) as part of their type certification basis.
Only with: Engines with an installed propeller gearbox whose serial number is listed in Rotax ASB-2026-001R00 (installed on delivery or supplied as a spare part); 912 A1, A2, A3 engines only when installed on the aircraft in Table 1 (AMT-200, HK 36 R, HK 36 TC/TS, DA20-A1, DV 20 KATANA, Sky Arrow 650 TC, SF 25C) as part of their type certification basis.

Applicability

From the AD text

This AD applies to BRP-Rotax GmbH & Co KG (formerly BRP-POWERTRAIN GMBH & CO KG and Bombardier-Rotax GmbH) (Rotax) Model 912 F2, 912 F3, 912 F4, 912 iSc2 Sport, 912 iSc3 Sport, 912 S2, 912 S3, 912 S4, 914 F2, 914 F3, and 914 F4 engines; and Model 912 A1, 912 A2, and 912 A3 engines installed on the aircraft identified in Table 1 to paragraph (c) of this AD that were included as part of the aircraft's type certification basis; with an installed propeller gearbox that meets the criteria of paragraphs (c)(1) or (2) of this AD. Table 1 to Paragraph (c)--Airplanes With Affected Engines Type certificate holder Aircraft model Engine model Aeromot-Industria Mecanico- AMT-200 (Super 912 A2. Metalurgica Ltda. Ximango). Diamond Aircraft Industries HK 36 R ``SUPER 912 A1. DIMONA''. Diamond Aircraft Industries GmbH HK 36 TC & HK 36 912 A3. TS. Diamond Aircraft Industries Inc. DA20-A1 912 A3. HOAC-Austria DV 20 KATANA 912 A3. Magnaghi Aeronautica S.p.A Sky Arrow 650 TC.. 912 A2. SCHEIBE-AIRCRAFT-GMBH SF 25C 912 A2 or 912 A3. (1) Installed initially (on delivery) on engines with a propeller gearbox installed having a serial number identified in Chapter 4) Appendix, paragraph 4.1) Gearbox…

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