Airworthiness Directive · Amendment 39-16912 · Engine
Various Aircraft Equipped With Rotax Aircraft Engines 912 A Series Engine
This AD applies to all serial numbers of the airplanes listed in table 1 of this AD, that are:
(1) Equipped with a Rotax Aircraft Engines 912 A series engine, with a part number (P/N) 888164 crankshaft installed, serial numbers 40232 through 40267, 40293 through 40374, 40408 through 40433, and 40435 through 40507; and
(2) Certificated in any category.
| Type certificate holder | Aircraft model | Engine model |
|---|---|---|
| Aeromot-Indústria Mecânico-Metalúrgica Ltda | AMT-200 | 912 A2 |
| Diamond Aircraft Industries | HK 36 R “SUPER DIMONA” | 912 A |
| DIAMOND AIRCRAFT INDUSTRIES GmbH | HK 36 TS and HK 36 TC | 912 A3 |
| Diamond Aircraft Industries Inc | DA20-A1 | 912 A3 |
| HOAC-Austria | DV 20 KATANA | 912 A3 |
| Iniziative Industriali Italiane S.p.A | Sky Arrow 650 TC | 912 A2 |
| SCHEIBE-Flugzeugbau GmbH | SF 25C | 912 A2 |
We are adopting a new airworthiness directive (AD) for various aircraft equipped with Rotax Aircraft Engines 912 A series engine. This AD results from 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 a deviation in the manufacturing process of certain part number 888164 crankshafts that may cause cracks on the surface of the crankshaft on the power take off side, which could lead to failure of the crankshaft support bearing and possibly result in an in-flight engine shutdown and forced landing. We are issuing this AD to require actions to address the unsafe condition on these products.
Unless already done, do the following actions.
(1) Within 4 hours time-in-service after January 26, 2012 (the effective date of this AD), inspect the crankshaft for cracks. Do the inspection following the Accomplishment Instructions in Rotax Aircraft Engines BRP Alert Service Bulletin ASB-912-059 and ASB-914-042 (single document), dated November 15, 2011.
(2) If any crack is found during the inspection required in paragraph (f)(1) of this AD, before further flight, remove the crankshaft from service.
(3) As of January 26, 2012 (the effective date of this AD), do not install on any airplane an engine equipped with an affected P/N 888164 crankshaft listed in paragraph (c)(1) of this AD, unless the crankshaft is inspected as specified in paragraph (f)(1) of this AD and is found to be crack free.
(4) As of January 26, 2012 (the effective date of this AD), do not install in any engine an affected P/N 888164 crankshaft listed in paragraph (c)(1) of this AD, unless the crankshaft is inspected as specified in paragraph (f)(1) of this AD and is found to be crack free.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
