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FAA orders · airworthiness directive · current

52-04-04: Lighting Circuit Protection

FAA order 52-04-04 is an airworthiness directive. The FAA's subject line: Lighting Circuit Protection. System: electrical power.

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 (422 characters)
52-04-04 MARTIN: Applies to All Models 202 and 202A Aircraft. Compliance required not later than July 1, 1952. Provide two separate and individually protected circuits for instrument panel lighting- each circuit to provide adequate panel illumination for necessary flight instruments. (G. L. Martin Co. Service Bulletin 118 and Trans World Airlines Engineering Order 5643 cover this same subject for the 202A).

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/52-04-04.json · aircraft systems.