Airworthiness directives › 2023-17-13
AD 2023-17-13 Airworthiness Directives; BRP-Rotax GmbH & Co KG (Formerly BRP-POWERTRAIN GMBH & CO KG and Bombardier-Rotax GmbH) Engines and Various Aircraft
Makes named: rotax, brp-rotax. Models named: 912 F2, 912 F3, 912 F4, 912 iSc2 Sport, 912 iSc3 Sport, 912 S2, 912 S3, 912 S4, 914 F2, 914 F3. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
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 A, 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 a propeller shaft having part number (P/N) 937047 and meeting at least one of 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-Metalurgica Ltda AMT-200 (Super Ximango) 912 A2. Diamond Aircraft Industries HK 36 R “SUPER DIMONA” 912 A. Diamond Aircraft Industries GmbH HK 36 TC & HK 36 TS 912 A3. 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 having a serial number identified in paragraph 1.1) Applicability, Criterion A) Engine Serial number, of Rotax Service Bulletin (SB) SB-912-078/SB-914-059/SB-912 i-014, dated July 25, 2023 (published as a single document) (Rotax SB SB-912-078/SB-914-059/SB-912 i-014); or paragraph 1.1) Applicability, Criterion A) Engine Serial number, of Rotax SB SB-912-078UL/SB-914-059UL/SB-912 i-014iS, dated July 25, 2023 (published as a single document) (SB-912-078UL/SB-914-059UL/SB-912 i-014iS); or (2) Delivered as a spare part and having a serial number identified in paragraph 1.1) Applicability, Criterion B) Spare parts, of Rotax SB SB-912-078/SB-914-059/SB-912 i-014; or paragraph 1.1) Applicability, Criterion B) Spare parts, of Rotax SB SB-912-078UL/SB-914-059UL/SB-912 i-014iS.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) Before further flight after the effective date of this AD and thereafter at intervals not to exceed 10 flight hours (FHs), inspect the magnetic plug on the crankcase for the accumulation of metal chips. If the accumulation of metal chips is 3mm or greater, before further flight, remove the affected propeller shaft from service and replace with a part eligible for installation. (2) Before exceeding 50 FHs since engine first operation or since first installation of the affected propeller shaft on an engine, as applicable; or within 10 days after the effective date of this AD, whichever occurs later; remove the affected propeller shaft from service and replace with a part eligible for installation. (3) Replacement of the affected propeller shaft with a part eligible for installation constitutes terminating action for any inspection required by paragraph (g)(1) of this AD.
Unsafe condition
This AD was prompted by a report of surface abnormalities on the affected propeller shaft, which could lead to increased wear of the propeller shaft bearings. The FAA is issuing this AD to prevent failure of the propeller shaft bearings. The unsafe condition, if not addressed, could result in failure of the propeller shaft, failure of the engine, engine in-flight shutdown, and (for a single-engine airplane) consequent emergency landing of the airplane or loss of control of the airplane.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1