60-11-06: Crankshaft
FAA order 60-11-06 is an airworthiness directive. The FAA's subject line: Crankshaft. It names the Lycoming GO-480-G1A6, Lycoming GO-480-G1B6, Lycoming GO-480-G1D6, Lycoming GO-480-G2D6, Lycoming GO-480 series, Lycoming GSO-480-B1J6 engines: about 261 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
- Models
- GO-480-C1B6, GO-480-C1D6, GO-480-C2C6, GO-480-C2D6, GO-480-C2E6, GO-480-C3A6, GO-480-G1A6, GO-480-G1B6, GO-480-G1D6, GO-480-G2D6, GSO-480-A1A6, GSO-480-A1C6, GSO-480-B1A6, GSO-480-B1B6 (O-480-1), GSO-480-B1C6, GSO-480-B2D6
- Engine series
- 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 series 246 aircraft
Lycoming GSO-480-B1J6 3 aircraft
Dates and paperwork
- 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 (502 characters)
60-11-06 LYCOMING: Amdt. 162 Part 507 Federal Register May 27, 1960. Applies to GO-480-C, -G and All GSO-480 Series Engines.
Compliance required at first engine overhaul after July 1, 1960.
To prevent excessive crankshaft counterweight bushing wear and subsequent detuning of the counterweights, crankshafts with cast counterweights must be modified to incorporate forged counterweights with hardened steel counterweight bushings.
(Lycoming Service Bulletin No. 249A covers this same subject.)
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 November 6, 2026. Connections as data: /graph/directive/60-11-06.json · aircraft systems.