66-06-03: Connecting Rod Assemblies
FAA order 66-06-03 is an airworthiness directive in force since January 16, 1969. The FAA's subject line: Connecting Rod Assemblies. It names the Lycoming GO-435-C2A, Lycoming GO-435-C2A2, Lycoming GO-435-C2B, Lycoming GO-435-C2B2, Lycoming GO-435C&D series, Lycoming GO-480-B, Lycoming GO-480-B1A6, Lycoming GO-480-B1D, Lycoming GO-480-F4A6, Lycoming GO-480-G1A6, Lycoming GO-480-G1B6, Lycoming GO-480-G1D6, Lycoming GO-480-G2D6, Lycoming GO-480-G2F6, Lycoming GO-480 series, Lycoming GSO-435 SERIE, Lycoming GSO-480-B1J6, Lycoming GSO-580 series, Lycoming HIO-360-A1A, Lycoming HIO-360-B1A, Lycoming HIO-360-B1B, Lycoming HIO-360-C1A, Lycoming HIO-360-C1B, Lycoming IGO-540-B1A, Lycoming IGSO-480-A1E6, Lycoming IGSO-540-B1A, Lycoming IO-320-A1A, Lycoming IO-320-B1A, Lycoming IO-320-B1C, Lycoming IO-320-B2A, Lycoming IO-320-C1A, Lycoming IO-320-E2A, Lycoming IO-320 series, Lycoming IO-360-A1A, Lycoming IO-360-A1B, Lycoming IO-360-A2B, Lycoming IO-360-B1A, Lycoming IO-360-B1B, Lycoming IO-360-B1C, Lycoming IO-360-B1D, Lycoming IO-360-B1E, Lycoming IO-360-C1A, Lycoming IO-360-D1A, Lycoming IO-360 series, Lycoming IO-540-A1A5, Lycoming IO-540-B1A5, Lycoming IO-540-C1B5, Lycoming IO-540-C2C, Lycoming IO-540-C4B5, Lycoming IO-540-D4A5, Lycoming IO-540-E1A5, Lycoming IO-540-E1B5, Lycoming IO-540-G1A5, Lycoming IO-540-G1B5, Lycoming IO-540-G1C5, Lycoming IO-540-J4A5, Lycoming IO-540-K1A5, Lycoming IO-540-K1B5, Lycoming IO-540 series, Lycoming IO-720, Lycoming IO-720-A1B, Lycoming IVO-360-A1A, Lycoming O-145-B2, Lycoming O-145B series, Lycoming O-233, Lycoming O-235, Lycoming O-235-C, Lycoming O-235-C1, Lycoming O-235-C1A, Lycoming O-235-C1B, Lycoming O-235 series, Lycoming O-290, Lycoming O-290-C, Lycoming O-290-D, Lycoming O-290-D2, Lycoming O-290-D2B, Lycoming O-290 series, Lycoming O-320-A1A, Lycoming O-320-A1B, Lycoming O-320-A2A, Lycoming O-320-A2B, Lycoming O-320-A2C, 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-B3B, Lycoming O-320-C1A, Lycoming O-320-C2A, Lycoming O-320-C3B, Lycoming O-320-D1A, Lycoming O-320-D2A, Lycoming O-320-D2B, Lycoming O-320-D2C, Lycoming O-320-E1A, Lycoming O-320-E2A, Lycoming O-320-E2B, Lycoming O-320-E2C, Lycoming O-320 series, Lycoming O-340-A1A, Lycoming O-340-B1A, Lycoming O-340 series, Lycoming O-350, Lycoming O-350 series, Lycoming O-360-A1A, Lycoming O-360-A1D, Lycoming O-360-A2A, Lycoming O-360-A2D, Lycoming O-360-A3A, Lycoming O-360-A4A, Lycoming O-360-B1A, Lycoming O-360-B1B, Lycoming O-360-B2A, Lycoming O-360-C1A, Lycoming O-360-C2A, Lycoming O-360-C2C, Lycoming O-360-C2D, Lycoming O-360-D1A, Lycoming O-360-D2A, Lycoming O-360 series, 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-J1A5D, Lycoming O-540-J2A5D, Lycoming O-540 series, Lycoming R-680E1, Lycoming R680, Lycoming R680E series, Lycoming R680E3A, Lycoming R680E3B, Lycoming TIO-540-A1A, Lycoming TIO-541-A1A, Lycoming TIO-541 series, Lycoming TVO-435-A1A, Lycoming TVO-435-D1A, 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 63,509 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.
What it applies to as the FAA lists it
- Kind of product
- Engine
- Makes
- Lycoming Engines; Textron Lycoming, AVCO Corporation
- Models
- GO-435-C2 (O-435-17), GO-435-C2A, GO-435-C2A2, GO-435-C2B, GO-435-C2B1, GO-435-C2B2, GO-435-C2E, GO-435-D1, GO-480-A1A, GO-480-B, GO-480-B1A6, GO-480-B1B, GO-480-B1C, GO-480-B1D, GO-480-C1B6, GO-480-C1D6, GO-480-C2C6, GO-480-C2D6, GO-480-C2E6, GO-480-C3A6, GO-480-D1A, GO-480-E1A6, GO-480-F1A6, GO-480-F2A6, GO-480-F2D6, GO-480-F3A6, GO-480-F3B6, GO-480-F4A6, GO-480-F4B6, GO-480-F6, GO-480-G1A6, GO-480-G1B6, GO-480-G1D6, GO-480-G1H6, GO-480-G2D6, GO-480-G2F6, GSO-435-B, GSO-435-B2, GSO-480-A1A6, GSO-480-A1C6, GSO-480-A2A6, GSO-480-B1A6, GSO-480-B1B6 (O-480-1), GSO-480-B1C6, GSO-480-B1E6,...
- Engine series
- Lycoming GO-435-C2A 2 aircraft
Lycoming GO-435-C2A2 5 aircraft
Lycoming GO-435-C2B 1 aircraft
Lycoming GO-435-C2B2 5 aircraft
Lycoming GO-435C&D series 130 aircraft
Lycoming GO-480-B 1 aircraft
Lycoming GO-480-B1A6 10 aircraft
Lycoming GO-480-B1D 1 aircraft
Lycoming GO-480-F4A6 1 aircraft
Lycoming GO-480-G1A6 1 aircraft
Lycoming GO-480-G1B6 1 aircraft
Lycoming GO-480-G1D6 7 aircraft
Lycoming GO-480-G2D6 3 aircraft
Lycoming GO-480-G2F6 1 aircraft
Lycoming GO-480 series 246 aircraft
Lycoming GSO-435 SERIE 7 aircraft
Lycoming GSO-480-B1J6 3 aircraft
Lycoming GSO-580 series 2 aircraft
Lycoming HIO-360-A1A 5 aircraft
Lycoming HIO-360-B1A 16 aircraft
Lycoming HIO-360-B1B 2 aircraft
Lycoming HIO-360-C1A 6 aircraft
Lycoming HIO-360-C1B 1 aircraft
Lycoming IGO-540-B1A 9 aircraft
Lycoming IGSO-480-A1E6 1 aircraft
Lycoming IGSO-540-B1A 48 aircraft
Lycoming IO-320-A1A 2 aircraft
Lycoming IO-320-B1A 55 aircraft
Lycoming IO-320-B1C 2 aircraft
Lycoming IO-320-B2A 1 aircraft
Lycoming IO-320-C1A 7 aircraft
Lycoming IO-320-E2A 11 aircraft
Lycoming IO-320 series 1,707 aircraft
Lycoming IO-360-A1A 195 aircraft
Lycoming IO-360-A1B 52 aircraft
Lycoming IO-360-A2B 2 aircraft
Lycoming IO-360-B1A 49 aircraft
Lycoming IO-360-B1B 67 aircraft
Lycoming IO-360-B1C 6 aircraft
Lycoming IO-360-B1D 2 aircraft
Lycoming IO-360-B1E 184 aircraft
Lycoming IO-360-C1A 7 aircraft
Lycoming IO-360-D1A 4 aircraft
Lycoming IO-360 series 8,560 aircraft
Lycoming IO-540-A1A5 16 aircraft
Lycoming IO-540-B1A5 4 aircraft
Lycoming IO-540-C1B5 9 aircraft
Lycoming IO-540-C2C 1 aircraft
Lycoming IO-540-C4B5 179 aircraft
Lycoming IO-540-D4A5 236 aircraft
Lycoming IO-540-E1A5 4 aircraft
Lycoming IO-540-E1B5 4 aircraft
Lycoming IO-540-G1A5 7 aircraft
Lycoming IO-540-G1B5 3 aircraft
Lycoming IO-540-G1C5 3 aircraft
Lycoming IO-540-J4A5 9 aircraft
Lycoming IO-540-K1A5 44 aircraft
Lycoming IO-540-K1B5 17 aircraft
Lycoming IO-540 series 4,218 aircraft
Lycoming IO-720 119 aircraft
Lycoming IO-720-A1B 8 aircraft
Lycoming IVO-360-A1A 2 aircraft
Lycoming O-145-B2 5 aircraft
Lycoming O-145B series 538 aircraft
Lycoming O-233 6 aircraft
Lycoming O-235 14 aircraft
Lycoming O-235-C 31 aircraft
Lycoming O-235-C1 49 aircraft
Lycoming O-235-C1A 2 aircraft
Lycoming O-235-C1B 20 aircraft
Lycoming O-235 series 6,134 aircraft
Lycoming O-290 46 aircraft
Lycoming O-290-C 1 aircraft
Lycoming O-290-D 45 aircraft
Lycoming O-290-D2 59 aircraft
Lycoming O-290-D2B 6 aircraft
Lycoming O-290 series 2,125 aircraft
Lycoming O-320-A1A 20 aircraft
Lycoming O-320-A1B 2 aircraft
Lycoming O-320-A2A 9 aircraft
Lycoming O-320-A2B 180 aircraft
Lycoming O-320-A2C 1 aircraft
Lycoming O-320-A3A 5 aircraft
Lycoming O-320-A3B 12 aircraft
Lycoming O-320-A3C 1 aircraft
Lycoming O-320-B1A 17 aircraft
Lycoming O-320-B1B 3 aircraft
Lycoming O-320-B2A 11 aircraft
Lycoming O-320-B2B 92 aircraft
Lycoming O-320-B2C 55 aircraft
Lycoming O-320-B3B 22 aircraft
Lycoming O-320-C1A 1 aircraft
Lycoming O-320-C2A 2 aircraft
Lycoming O-320-C3B 1 aircraft
Lycoming O-320-D1A 116 aircraft
Lycoming O-320-D2A 72 aircraft
Lycoming O-320-D2B 18 aircraft
Lycoming O-320-D2C 1 aircraft
Lycoming O-320-E1A 3 aircraft
Lycoming O-320-E2A 98 aircraft
Lycoming O-320-E2B 4 aircraft
Lycoming O-320-E2C 11 aircraft
Lycoming O-320 series 27,316 aircraft
Lycoming O-340-A1A 5 aircraft
Lycoming O-340-B1A 1 aircraft
Lycoming O-340 series 60 aircraft
Lycoming O-350 1 aircraft
Lycoming O-350 series 17 aircraft
Lycoming O-360-A1A 600 aircraft
Lycoming O-360-A1D 1,057 aircraft
Lycoming O-360-A2A 38 aircraft
Lycoming O-360-A2D 5 aircraft
Lycoming O-360-A3A 50 aircraft
Lycoming O-360-A4A 63 aircraft
Lycoming O-360-B1A 13 aircraft
Lycoming O-360-B1B 2 aircraft
Lycoming O-360-B2A 3 aircraft
Lycoming O-360-C1A 7 aircraft
Lycoming O-360-C2A 19 aircraft
Lycoming O-360-C2C 6 aircraft
Lycoming O-360-C2D 2 aircraft
Lycoming O-360-D1A 6 aircraft
Lycoming O-360-D2A 4 aircraft
Lycoming O-360 series 1,066 aircraft
Lycoming O-435A/O-435C 135 aircraft
Lycoming O-540-A1A 4 aircraft
Lycoming O-540-A1A5 7 aircraft
Lycoming O-540-A1B5 4 aircraft
Lycoming O-540-A1C5 4 aircraft
Lycoming O-540-A1D 1 aircraft
Lycoming O-540-A1D5 18 aircraft
Lycoming O-540-A2B 2 aircraft
Lycoming O-540-A4B5 2 aircraft
Lycoming O-540-A4C5 1 aircraft
Lycoming O-540-A4D5 7 aircraft
Lycoming O-540-B1A5 1 aircraft
Lycoming O-540-B1B5 1 aircraft
Lycoming O-540-B2B5 27 aircraft
Lycoming O-540-B2C5 13 aircraft
Lycoming O-540-B4B5 40 aircraft
Lycoming O-540-E4A5 9 aircraft
Lycoming O-540-E4B5 21 aircraft
Lycoming O-540-E4C5 15 aircraft
Lycoming O-540-F1B5 299 aircraft
Lycoming O-540-J1A5D 11 aircraft
Lycoming O-540-J2A5D 1 aircraft
Lycoming O-540 series 5,244 aircraft
Lycoming R-680E1 1 aircraft
Lycoming R680 218 aircraft
Lycoming R680E series 225 aircraft
Lycoming R680E3A 1 aircraft
Lycoming R680E3B 13 aircraft
Lycoming TIO-540-A1A 5 aircraft
Lycoming TIO-541-A1A 1 aircraft
Lycoming TIO-541 series 273 aircraft
Lycoming TVO-435-A1A 1 aircraft
Lycoming TVO-435-D1A 2 aircraft
Lycoming TVO-435-GIA 88 aircraft
Lycoming VO-435-A1F 15 aircraft
Lycoming VO-435-B1A 6 aircraft
Lycoming VO-435 series 190 aircraft
Lycoming VO-540-B1B3 3 aircraft
Lycoming VO-540 series 110 aircraft
Dates and paperwork
- In force since
- January 16, 1969
- Docket
- Unknown
- Status
- Current
- The FAA's document
- Read the order on the FAA's site
The order itself the regulatory text, as published
Show the full text (1,013 characters)
Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 5, 2026. Connections as data: /graph/directive/66-06-03.json · aircraft systems.
