Airworthiness Directive · Amendment 39-22132 · Engine
Continental Aerospace Technologies, Inc., Lycoming Engines, and Textron Lycoming/Subsidiary of Textron, Inc. Reciprocating Engines
This AD applies to:
(1) Continental Aerospace Technologies, Inc. reciprocating engine models identified in Table 1 to paragraph (c) of this AD that are equipped with an S-1200 series magneto having a serial number (S/N) between F21EA057 and F21KA009R, inclusive, manufactured and sold between May and November 2021; and
(2) Lycoming Engines and Textron Lycoming/Subsidiary of Textron, Inc. reciprocating engine models identified in Table 2 to paragraph (c) of this AD that are equipped with an S-1200 series magneto authorized by Continental Aerospace Technologies, Inc. Parts Manufacturer Approval (PMA) Supplements 1-54, having an S/N between F21EA057 and F21KA009R, inclusive, manufactured and sold between May and November 2021.
The FAA is adopting a new airworthiness directive (AD) for certain Continental Aerospace Technologies, Inc. GTSIO-520, IO-346, IO- 470, IO-520, IO-550, LTSIO-520, O-470, TSIO-520, and TSIOL-550 series model reciprocating engines, Lycoming Engines AEIO-320, AEIO-360, AEIO- 540, AIO-320, AIO-360, GO-480, GSO-480, HIO-360, HIO-540, IGO-480, IGO- 540, IGSO-480, IGSO-540, IO-320, IO-360, IO-540, LIO-360, LTIO-540, O- 235, O-320, O-360, O-540, TIGO-541, TIO-360, TIO-540, TIO-541, TVO-435, VO-435, and VO-540 series model reciprocating engines, and Textron Lycoming/Subsidiary of Textron, Inc. IO-720 series model reciprocating engines. This AD was prompted by a report of a manufacturing quality escape of improperly lubricated roller bearings installed in certain magnetos, which may result in overheating and magneto seizure. This AD requires the replacement of affected magneto or inspection of affected magneto and, if no white grease is detected, replacement of magneto components, as applicable, and reassembly of the magneto. The FAA is issuing this AD to address the unsafe condition on these products.
For any affected magneto, within 25 operating hours time-in-service (TIS) or, if any affected magneto has accumulated more than 25 operating hours TIS, before further flight after the effective date of this AD:
(1) Remove the affected magneto from the engine and replace with a part eligible for installation in accordance with the Corrective Action, paragraph III.A., of Continental Aerospace Technologies Critical Service Bulletin CSB673, Revision C, dated May 24, 2022 (the CSB); or
(2) Remove the affected magneto from the engine and disassemble and inspect the affected magneto in accordance with the Corrective Action, paragraphs III.B.1. through III.B.8.a., of the CSB.
(i) If, during the inspection required by paragraph (g)(2) of this AD, no white grease is detected, before further flight, inspect and replace the magneto components, as applicable, in accordance with the Corrective Action, paragraphs III.B.8.b.1 and III.B.8.b.2, of the CSB. Where the CSB specifies discarding the roller bearing, this AD instead requires removing the roller bearing from service.
(ii) Reassemble and install the magneto in accordance with the Corrective Action, paragraph III.C., of the CSB.
After the effective date of this AD, do not install onto any engine an S-1200 series magneto having a S/N between F21EA057 and F21KA009R, inclusive, manufactured and sold between May and November 2021; or any S-1200 series magneto authorized by Continental Aerospace Technologies, Inc. PMA Supplements 1-54, having an S/N between F21EA057 and F21KA009R, inclusive, manufactured and sold between May and November 2021, unless the magneto has first undergone corrective action and the data plate has been marked in accordance with the Corrective Action, paragraph III.C.3., of the CSB.
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.
