57-13-01: Engine Strut Fittings
FAA order 57-13-01 is an airworthiness directive. The FAA's subject line: Engine Strut Fittings. System: engine.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Revo, Incorporated
- Models
- Colonial C-1
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 (814 characters)
57-13-01 COLONIAL: Applies to All Model C-1 Aircraft.
Compliance required within next 10 hours of operation or July 15, 1957, whichever occurs first unless already accomplished, and every 100 hours' operation thereafter.
Inspect with 10-power glass the engine pylon side strut attaching fittings (P/N 3208-10) for cracks in the weld areas. (Inspection may be readily accomplished after removal of the fairing cuff, P/N 5400-33.) Fittings with cracks originating across the edge may be salvaged for use if the crack can be removed by grinding to a maximum depth of 1/16 inch measured in from the edge. Fittings with cracks located in areas other than the edge or in excess of the salvage limits must be replaced.
(Colonial Service Bulletin No. 4 revision 1 dated May 22, 1957, 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/57-13-01.json · aircraft systems.