Airworthiness directives › 2013-15-19
AD 2013-15-19 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 the following BRP Powertrain GmbH & Co KG Rotax reciprocating engines: (1) Rotax 912F from serial number (S/N) 4,413.013 to S/N 4,413.019, inclusive. (2) Rotax 912S, from S/N 4,924.468 to S/N 4,924.543, inclusive. (3) Rotax 914F, from S/N 4,421.156 to S/N 4,421.177, inclusive. (4) All Rotax 912F, 912S, and 914F engines with cylinder head assembly, part number (P/N) 623682 or P/N 623687, supplied by BRP-Powertrain between January 31, 2013, and May 28, 2013, installed.
Compliance
For the purpose of this AD, unusual deposits (excessive carbon or oil) is when: (1) Carbon is a visual buildup of dark carbon deposits on the center and grounding electrodes as well as the immediate surrounding area, and (2) Excessive oil is a visual buildup indicated by the presence of oil on the center and grounding electrodes as well as the immediate surrounding area, giving a wet appearance.
Required actions
The Manager, Engine Certification Office, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request.
Unsafe condition
Comply with this AD within the compliance times specified, unless already done. (1) Within 5 flight hours or 20 days after the effective date of this AD, whichever occurs first, perform a one-time visual inspection of the center and grounding electrodes of both top and bottom spark plugs on cylinder 2 and cylinder 3, for unusual deposits of excessive oil or carbon deposits. Any excessive oil or carbon deposits indicate the cylinder head is not manufactured to proper specification and is leaking oil into the combustion chamber. (2) Before further flight, replace cylinder heads not manufactured to proper specification. (3) From the effective date of this AD, installation on an engine of an affected spare cylinder head assembly part number (P/N) 623682 or P/N 623687, supplied by BRP-Powertrain between January 31, 2013, and May 28, 2013, is prohibited unless the engine, with the spare cylinder head installed, is test run for at least 20 minutes and the inspection called out in paragraph (e) (1) of this AD is accomplished. If the cylinder head fails the inspection required by paragraph (e) (1) of this AD, remove the cylinder head assembly before further flight.
Affected ADs
This AD supersedes AD 2013-07-12, Amendment 39-17416 (78 FR 22166, April 15, 2013)
Read the original on the Federal Register →
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