47-10-40: Rudder Control Arm Reinforcement
FAA order 47-10-40 is an airworthiness directive. The FAA's subject line: Rudder Control Arm Reinforcement. It names Luscombe 8 Silvaire: about 1,420 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: flight controls.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Don Luscombe Aviation History Foundation, Inc.
- Models
- 8, 8A, 8B, 8C, 8D, 8E
- On this site
- Luscombe 8 Silvaire 1,420 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 (616 characters)
47-10-40 LUSCOMBE: (Was Mandatory Note 11 of AD-694-4.) Applies to Model 8 Series Aircraft Serial Numbers 1934 to 2200 Inclusive.
Compliance required prior to May 1, 1947.
Determine if the attachment of the rudder control arm to the torque tube has been reinforced by a steel strap that extends completely around the torque tube and is securely welded to both the fore and aft flanges of the rudder control arms and the torque tube. If the reinforcing steel strap is not properly located and welded to both flanges, a repair should be made.
(Luscombe Service Bulletin No. 4-46 covers this same subject.)
Related safety bulletins advice on the same designs, not orders
2017-06-05CE-17-14 · Main Landing Gear: Lower Leg Internal Corrosion
2014-02-13CE-14-09 · Luscombe Model 8A Fuel System
1997-05-15ACE-97-03 ·
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 October 5, 2026. Connections as data: /graph/directive/47-10-40.json · aircraft systems.