47-02-04: Engine Primer Solenoid
FAA order 47-02-04 is an airworthiness directive. The FAA's subject line: Engine Primer Solenoid. It names Douglas C-54: about 7 aircraft on the U.S. register today, 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
- Aircraft
- Makes
- The Boeing Company
- Models
- C54-DC, C54A-DC, C54B-DC, C54D-DC, C54E-DC, C54G-DC, DC-4
- On this site
- Douglas C-54 7 registered
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 (486 characters)
47-02-04 DOUGLAS: (Was Mandatory Note 12 AD-762-7.) Applies to C-54 and DC-4 Aircraft.\n \n\tTo be accomplished not later than March 15, 1947. \n\n\tRelocate engine primer solenoid to prevent fuel leaking into firewall junction box. This change shall be accomplished in accordance with item 25 of Douglas Service Bulletin C-54-266, dated May 17, 1946, or part 2A, item 4; and part 2C, item 12 of Douglas Service Bulletin DC-4 No. 66, dated June 18, 1947. \n\n\tRevised May 24, 1948.
Related safety bulletins advice on the same designs, not orders
2014-11-24NM-15-03 · Flight Controls
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/47-02-04.json · aircraft systems.