2024-21-02: Engine (Reciprocating)

FAA order 2024-21-02 is an airworthiness directive in force since December 5, 2024. The FAA's subject line: Engine (Reciprocating). It names the Lycoming AEIO-320-D1B, Lycoming AEIO-320-E1B, Lycoming AEIO-320-E2B, Lycoming AEIO-320 series, Lycoming AEIO-360-A1A, Lycoming AEIO-360-A1B, Lycoming AEIO-360-A1B6, Lycoming AEIO-360-A1D, Lycoming AEIO-360-A1E, Lycoming AEIO-360-A1E6, Lycoming AEIO-360-A2C, Lycoming AEIO-360-B1B, Lycoming AEIO-360-B1F, Lycoming AEIO-360-B1G6, Lycoming AEIO-360-B1H, Lycoming AEIO-360-B2F, Lycoming AEIO-360-B4A, Lycoming AEIO-360-H1A, Lycoming AEIO-360-H1B, Lycoming AEIO-360 series, Lycoming AEIO-390-A1B6, Lycoming AEIO-540-D4A5, Lycoming AEIO-540-D4B5, Lycoming AEIO-540-L1B5, Lycoming AEIO-540-L1B5D, Lycoming AEIO-540 series, Lycoming AEIO-580-B1A, Lycoming HIO-360-A1A, Lycoming HIO-360-B1A, Lycoming HIO-360-B1B, Lycoming HIO-360-C1A, Lycoming HIO-360-C1B, Lycoming HIO-360-D1A, Lycoming HIO-360-E1AD, Lycoming HIO-360-E1BD, Lycoming HIO-360-F1AD, Lycoming HIO-360-G1A, Lycoming HIO-360 series, Lycoming HIO-390-X252, Lycoming HIO-540-A1A, Lycoming HO-360, Lycoming HO-360-B1B, Lycoming HO-360-C1A, Lycoming IO-320-A1A, Lycoming IO-320-B1A, Lycoming IO-320-B1C, Lycoming IO-320-B2A, Lycoming IO-320-C1A, Lycoming IO-320-D1A, Lycoming IO-320-D1B, Lycoming IO-320-E1A, Lycoming IO-320-E1B, Lycoming IO-320-E2A, Lycoming IO-320-E2B, Lycoming IO-320 series, Lycoming IO-360-A1A, Lycoming IO-360-A1B, Lycoming IO-360-A1B6, Lycoming IO-360-A1B6D, Lycoming IO-360-A1D, Lycoming IO-360-A1D6, Lycoming IO-360-A1D6D, Lycoming IO-360-A2B, Lycoming IO-360-A3B6, Lycoming IO-360-A3B6D, Lycoming IO-360-A3D6D, Lycoming IO-360-B1A, Lycoming IO-360-B1B, Lycoming IO-360-B1C, Lycoming IO-360-B1D, Lycoming IO-360-B1E, Lycoming IO-360-B1F, Lycoming IO-360-B1F6, Lycoming IO-360-B1G6, Lycoming IO-360-B2E, Lycoming IO-360-B2F, Lycoming IO-360-B4A, Lycoming IO-360-C1A, Lycoming IO-360-C1C, Lycoming IO-360-C1C6, Lycoming IO-360-C1D6, Lycoming IO-360-C1E6, Lycoming IO-360-C1F, Lycoming IO-360-C1G6, Lycoming IO-360-D1A, Lycoming IO-360-E1A, Lycoming IO-360-F1A, Lycoming IO-360-L2A, Lycoming IO-360-M1A, Lycoming IO-360-M1B, Lycoming IO-360 series, Lycoming IO-390-A1A6, Lycoming IO-390-A1B6, Lycoming IO-390-A3A6, Lycoming IO-390 series, Lycoming IO-540-A1A5, Lycoming IO-540-AA1A5, Lycoming IO-540-AB1A5, Lycoming IO-540-AC1A5, Lycoming IO-540-AE1A5, Lycoming IO-540-B1A5, Lycoming IO-540-C1B5, Lycoming IO-540-C2C, Lycoming IO-540-C4B5, Lycoming IO-540-C4D5D, Lycoming IO-540-D4A5, Lycoming IO-540-D4B5, Lycoming IO-540-D4C5, Lycoming IO-540-E1A5, Lycoming IO-540-E1B5, Lycoming IO-540-G1A5, Lycoming IO-540-G1B5, Lycoming IO-540-G1C5, Lycoming IO-540-G1D5, Lycoming IO-540-J4A5, Lycoming IO-540-K1A5, Lycoming IO-540-K1A5D, Lycoming IO-540-K1B5, Lycoming IO-540-K1C5, Lycoming IO-540-K1E5, Lycoming IO-540-K1F5, Lycoming IO-540-K1G5, Lycoming IO-540-K1G5D, Lycoming IO-540-K1H5, Lycoming IO-540-K1J5, Lycoming IO-540-L1B5D, Lycoming IO-540-L1C5, Lycoming IO-540-M1B5D, Lycoming IO-540-M1C5, Lycoming IO-540-N1A5, Lycoming IO-540-P1A5, Lycoming IO-540-R1A5, Lycoming IO-540-S1A5, Lycoming IO-540 series, Lycoming IO-540-T4A5D, Lycoming IO-540-T4B5, Lycoming IO-540-V4A5D, Lycoming IO-540-W1A5, Lycoming IO-540-W1A5D, Lycoming IVO-360-A1A, Lycoming LIO-320-C1A, Lycoming LIO-360-C1E6, Lycoming LO-360-A1G6D, Lycoming LO-360-A1H6, Lycoming LO-360-E1AD, Lycoming LTIO-540-F2BD, Lycoming LTIO-540-J2BD, Lycoming LTO-360-E1A6D, Lycoming O-233, Lycoming O-235-C, Lycoming O-235-C1, Lycoming O-235-C1A, Lycoming O-235-C1B, Lycoming O-235-C2C, Lycoming O-235-E1, Lycoming O-235-F2B, Lycoming O-235-J2B, Lycoming O-235-K2C, Lycoming O-235-L2A, Lycoming O-235-L2C, Lycoming O-235-N2A, Lycoming O-235 series, Lycoming O-320-A1A, Lycoming O-320-A1B, Lycoming O-320-A2A, Lycoming O-320-A2B, Lycoming O-320-A2C, Lycoming O-320-A2D, Lycoming O-320-A3A, Lycoming O-320-A3B, Lycoming O-320-A3C, Lycoming O-320-B1A, Lycoming O-320-B1B, Lycoming O-320-B2A, Lycoming O-320-B2B, Lycoming O-320-B2C, Lycoming O-320-B2D, Lycoming O-320-B2E, Lycoming O-320-B3B, Lycoming O-320-C1A, Lycoming O-320-C2A, Lycoming O-320-C3B, Lycoming O-320-D1A, Lycoming O-320-D1D, Lycoming O-320-D1F, Lycoming O-320-D2A, Lycoming O-320-D2B, Lycoming O-320-D2C, Lycoming O-320-D2G, Lycoming O-320-D2J, Lycoming O-320-D3G, Lycoming O-320-E1A, Lycoming O-320-E1F, Lycoming O-320-E2A, Lycoming O-320-E2B, Lycoming O-320-E2C, Lycoming O-320-E2D, Lycoming O-320-E2G, Lycoming O-320-E3D, Lycoming O-320-E3H, Lycoming O-320-H2AD, Lycoming O-320 series, Lycoming O-340-A1A, Lycoming O-340-B1A, Lycoming O-340 series, Lycoming O-360-A1A, Lycoming O-360-A1AD, Lycoming O-360-A1D, Lycoming O-360-A1F, Lycoming O-360-A1F6, Lycoming O-360-A1F6D, Lycoming O-360-A1G, Lycoming O-360-A1G6, Lycoming O-360-A1G6D, Lycoming O-360-A1H, Lycoming O-360-A1H6, Lycoming O-360-A1LD, Lycoming O-360-A1P, Lycoming O-360-A2A, Lycoming O-360-A2D, Lycoming O-360-A2F, Lycoming O-360-A2G, Lycoming O-360-A3A, Lycoming O-360-A4A, Lycoming O-360-A4G, Lycoming O-360-A4K, Lycoming O-360-A4M, Lycoming O-360-A4P, Lycoming O-360-B1A, Lycoming O-360-B1B, Lycoming O-360-B2A, Lycoming O-360-B2C, Lycoming O-360-C1A, Lycoming O-360-C1E, Lycoming O-360-C1F, Lycoming O-360-C1G, Lycoming O-360-C2A, Lycoming O-360-C2C, Lycoming O-360-C2D, Lycoming O-360-C2E, Lycoming O-360-C4F, Lycoming O-360-C4P, Lycoming O-360-D1A, Lycoming O-360-D2A, Lycoming O-360-E1A6D, Lycoming O-360-F1A6, Lycoming O-360-G1A6, Lycoming O-360-J2A, Lycoming O-360 series, Lycoming O-435, Lycoming O-435A/O-435C, Lycoming O-540-A1A, Lycoming O-540-A1A5, Lycoming O-540-A1B5, Lycoming O-540-A1C5, Lycoming O-540-A1D, Lycoming O-540-A1D5, Lycoming O-540-A2B, Lycoming O-540-A4B5, Lycoming O-540-A4C5, Lycoming O-540-A4D5, Lycoming O-540-B1A5, Lycoming O-540-B1B5, Lycoming O-540-B2B5, Lycoming O-540-B2C5, Lycoming O-540-B4B5, Lycoming O-540-E4A5, Lycoming O-540-E4B5, Lycoming O-540-E4C5, Lycoming O-540-F1B5, Lycoming O-540-G1A5, Lycoming O-540-J1A5D, Lycoming O-540-J2A5D, Lycoming O-540-J3A5D, Lycoming O-540-J3C5D, Lycoming O-540-L3C5D, Lycoming O-540 series, Lycoming O235N2C, Lycoming TEO-540-C1A, Lycoming TIGO-541-E1A, Lycoming TIGO-541 series, Lycoming TIO-360-C1A6D, Lycoming TIO-360 series, Lycoming TIO-540-A1A, Lycoming TIO-540-A2B, Lycoming TIO-540-A2C, Lycoming TIO-540-AA1AD, Lycoming TIO-540-AB1BD, Lycoming TIO-540-AE2A, Lycoming TIO-540-AF1A, Lycoming TIO-540-AF1B, Lycoming TIO-540-AG1A, Lycoming TIO-540-AH1A, Lycoming TIO-540-AJ1A, Lycoming TIO-540-AK1A, Lycoming TIO-540-C1A, Lycoming TIO-540-F2BD, Lycoming TIO-540-J2B, Lycoming TIO-540-J2BD, Lycoming TIO-540-K1AD, Lycoming TIO-540-R2AD, Lycoming TIO-540-S1AD, Lycoming TIO-540 series, Lycoming TIO-540-U2A, Lycoming TIO-540-V2AD, Lycoming TIO-541-A1A, Lycoming TIO-541-E1C4, Lycoming TIO-541 series, Lycoming TO-360-A1A6D, Lycoming TO-360-C1A6D, Lycoming TO-360-E1A6D, Lycoming TO-360 series, Lycoming TVO-435-A1A, Lycoming TVO-435-D1A, Lycoming TVO-435-F1A, Lycoming TVO-435-G1A, Lycoming TVO-435-GIA, Lycoming VO-435-A1F, Lycoming VO-435-B1A, Lycoming VO-435 series, Lycoming VO-540-B1B3, Lycoming VO-540 series engines: about 80,730 aircraft on the U.S. register today across them, though an order usually covers particular versions or serial numbers rather than every one. System: engine.