Airworthiness directives › 2012-04-03
AD 2012-04-03 Airworthiness Directives; BRP-Powertrain GmbH & Co KG Rotax Reciprocating Engines
Makes named: rotax. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to BRP-Powertrain GmbH & Co KG: (1) Rotax 912 S2 and 912 S3 reciprocating engines, serial numbers (S/Ns) 4,924.287 to 4,924.295 inclusive, 4,924.300 to 4,924.304 inclusive, 4,924.342 to 4,924.350 inclusive, 4,924.352, and 4,924.353. (2) Rotax 914 F2 reciprocating engines, S/Ns 4,421.079, 4,421.080, and 4,421.081.
Compliance
The Manager, Engine Certification Office, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request.
Required actions
(1) For more information about this AD, contact Alan Strom, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; email: alan.strom@faa.gov; phone: 781-238-7143; fax: 781-238-7199. (2) Refer to European Aviation Safety Agency Emergency AD 2012-0019-E, dated November 15, 2011, for related information.
Unsafe condition
Unless already done, do the following actions within four flight hours or 30 days after the effective date of this AD, whichever occurs first. (1) Inspect the oil pump and engine valve train for oil leaks in accordance with paragraph 3.1) step 1. of BRP-Powertrain GmbH & Co KG, Rotax Aircraft Engines Mandatory Alert Service Bulletins (ASBs) No. ASB-912-060 and No. ASB-914-043 (combined in one document), dated January 26, 2012. (2) If no leaks are found during the inspection, tighten the four oil pump attachment bolts with lock washers installed to 10 Nm (90 in. lb.). (3) If any leaks are found during the inspection specified in paragraph (e)(1) of this AD, do the following: (i) Remove the oil pump and inspect all surfaces for wear, cracks, or damage. If any measurable wear, cracking, or damage is found, reject the oil pump. If no measurable wear, cracking, or damage is found, replace the three o-rings and the four gasket rings and reinstall the oil pump. (ii) Inspect the engine valve train washers for increased wear, in accordance with paragraph 3.1.3) steps 19. through 21. of BRP-Powertrain GmbH & Co KG, Rotax Aircraft Engines Mandatory ASBs No. ASB-912-060 and No. ASB-914-043 (combined in one document), dated January 26, 2012.
Affected ADs
None.
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