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FAA orders · airworthiness directive · current

47-10-24: Cross-Feed Relief Valve

FAA order 47-10-24 is an airworthiness directive. The FAA's subject line: Cross-Feed Relief Valve. System: engine.

What it applies to as the FAA lists it

Kind of product
Aircraft
Makes
Lockheed Aircraft Corporation
Models
49-46

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 (329 characters)
47-10-24 LOCKHEED: (Was Mandatory Note 27 of AD-763-3.) Applies to All Model 49 Serials Up to and Including 2088. Compliance required prior to June 1, 1947. Install thermal relief valve and bypass line in fuel crossfeed line adjacent to No. 4 cross transfer valve. (LAC Service Bulletin 49/SB-48 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/47-10-24.json · aircraft systems.