52-04-02: Inverter Control Protection
FAA order 52-04-02 is an airworthiness directive. The FAA's subject line: Inverter Control Protection. System: electric propulsion.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Martin-Marietta Corporation
- Models
- 202, 202A
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 (354 characters)
52-04-02 MARTIN: Applies to All Models 202 and 202A Aircraft.
Compliance required not later than August 1, 1952.
Provide separate protection for each inverter control and warning light circuit. Also provide separate protection for T and B warning lights in forward area.
(Trans World Airlines Engineering Order No. 5717 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/52-04-02.json · aircraft systems.