55-02-02: Gasket
FAA order 55-02-02 is an airworthiness directive. The FAA's subject line: Gasket. It names the Lycoming O-320-A1A, Lycoming O-320-A2A engines: about 30 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
- O-320-A1A, O-320-A2A
- Engine series
- Lycoming O-320-A1A 21 aircraft
Lycoming O-320-A2A 9 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 (754 characters)
55-02-02 LYCOMING: Applies to Model O-320 Engines Below Serial Number 612 Installed in Aircraft Equipped With Fixed Pitch Propellers.
Compliance required as soon as possible but not later than February 28, 1955.
Several immediate forced landings have occurred with aircraft equipped with the above engine and propeller combinations due to rapid loss of engine oil from the engine accessory drive adapter gasket location. To preclude this possibility, all such engines should be inspected to insure that the proper gasket is installed under the lower accessory drive adapter cover. For engines with fixed pitch propellers, Lycoming P/N 69551, gasket must be installed at this location.
(Lycoming Service Bulletin No. 176 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/55-02-02.json · aircraft systems.