47-10-13: Fire Resistant Firewall Fittings
FAA order 47-10-13 is an airworthiness directive. The FAA's subject line: Fire Resistant Firewall Fittings. System: other and general.
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 (570 characters)
47-10-13 LOCKHEED: (Was Mandatory Note 15 AD-763-3.) Applies to All Model 49 Serials Up to and Including 2075.
Compliance required prior to July 1, 1947.
(a) On all firewalls, replace aluminum alloy bulkhead fittings for fuel, oil, and hydraulic lines with nickel steel fittings or others of equivalent fire resistance.
(LAC Service Bulletin 49/SB-108 covers this same subject.)
(b) In nacelle zones 1 and 2 replace all buting having cut-length hose connections with flexible coupled hose assemblies.
(LAC Service Bulletin 49/SB-103 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/47-10-13.json · aircraft systems.