Airworthiness directives › 2023-02-12
AD 2023-02-12 Airworthiness Directives; Continental Aerospace Technologies, Inc. Reciprocating Engines With a Certain Superior Air Parts, Inc. Intake Valve Installed
Makes named: continental, superior air parts. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Continental Aerospace Technologies, Inc. (Continental) GTSIO-520, IO-470, IO-520, IO-550, IOF-550, LIO-470, LIO-520, LTSIO-520, O-470, TSIO-470, TSIO-520, TSIO-550, TSIOF-550, and TSIOL-550 model reciprocating engines listed in the Application Table, page 1, of Superior Air Parts, Inc. (SAP) Mandatory Service Bulletin MSB22-01 A, dated December 16, 2022 (SAP MSB22-01 A) with an installed: (1) SAP cylinder assembly having a part number (P/N) and serial number listed in Table 1 of SAP MSB22-01 A, installed on or after January 20, 2022; or (2) Cylinder assembly that was repaired and installed on or after January 20, 2022, with a SAP intake valve having P/N SA539988 and lot number 19077 O; or (3) SAP intake valve with P/N SA539988 and lot number 19077 O.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) For engines with an affected SAP cylinder assembly installed, as identified in paragraph (c)(1) of this AD, within 30 days from the effective date of this AD, remove the affected cylinder assembly and replace any affected intake valve with an intake valve that is eligible for installation. (2) For engines with an affected repaired cylinder assembly installed, as identified in paragraph (c)(2) of this AD, within 30 days from the effective date of this AD, inspect the affected cylinder assembly for installation of any intake valve marked with lot number 19077 O. If, during any inspection required by this paragraph, an intake valve is identified with lot number 19077 O, before further flight, replace the affected intake valve with an intake valve that is eligible for installation. (3) For engines with an affected SAP intake valve installed, as identified in paragraph (c)(3) of this AD, within 30 days from the effective date of this AD, remove the affected intake valve and replace with an intake valve that is eligible for installation.
Unsafe condition
This AD was prompted by three intake valve failures on reciprocating engines that resulted in engine damage and emergency landing or aborted takeoff. The FAA is issuing this AD to prevent failure of the engine intake valve. The unsafe condition, if not addressed, could result in failure of the engine, in-flight shutdown, and loss 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