46-13-01: Landing Gear Hose Ferrules
FAA order 46-13-01 is an airworthiness directive. The FAA's subject line: Landing Gear Hose Ferrules. It names Lockheed 18: about 13 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: landing gear.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Lockheed Aircraft Corporation
- Models
- 18
- On this site
- Lockheed 18 13 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 (510 characters)
46-13-01 LOCKHEED: (Was Service Note 2 of AD-723-2.) Applies to All Model 18 Aircraft.
When replacing the landing gear actuating cylinder flexible hose, P/N 55252-3, the length of ferrules should be compared. If longer ferrules are found on the new hoses, an elbow should be inserted between the hose and the cylinder aft port, to prevent possible damage to the hose by the landing gear scissors. (Lockheed Service Letter No. 18-28, dated June 15, 1945, revised December 10, 1945, 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/46-13-01.json · aircraft systems.