| 2023-05-16 | Reciprocating Engine Power Section | Mar 15, 2023 | Engine (IO-550-N) |
| 2020-16-11 | Reciprocating Cylinder Section | Sep 21, 2020 | Engine (IO-550-N)Only with: Engines originally manufactured, rebuilt, or modified with a cross-flow cylinder assembly replacement on or after November 1, 2014, with cross-flow cylinder assembly P/N 658538, 658540, 658542, 658591, 658595, 658613, 658624, 658539, 658541, 658590, 658594, 658603, 658623, or 658630 installed. |
| 2012-10-13 | Continental Motors, Inc. (CMI) Reciprocating Engines | Jun 8, 2012 | Engine (IO-550-N)Only with: Starter adapter P/N 642085A17, 642085A18, 642085A19, 642085A20, 642085A22, 642085-1A1, R-642085A17, R-642085A18, R-642085A19, or R-642085A22 installed, where the engine was manufactured, or a new or rebuilt starter adapter installed, before November 20, 2011; IO-550-N only if turbo-normalized per STC SE10589SC. |
| 2009-16-03 | Teledyne Continental Motors (TCM) IO-520, TSIO-520, and IO-550 Series Reciprocating… | Sep 9, 2009 | Engine (IO-550-N)Only with: SAP investment cast cylinder assemblies P/Ns SA52000-A1, SA52000-A20P, SA52000-A21P, SA52000-A22P, SA52000-A23P, SA55000-A1, or SA55000-A20P installed. |