# AD 47-10-40: Rudder Control Arm Reinforcement

- Type: Airworthiness directive
- Status: Current
- Products: Don Luscombe Aviation History Foundation 8, 8A, 8B, 8C, 8D and 8E
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 1,303 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8FCDC49C52080C1886256A380063A7FF.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/47-10-40

## The airworthiness directive

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.)

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-694](https://openairdocs.org/tcds/A-694): Luscombe Aircraft Corporation; names 6 of 8 models: 8, 8D, 8A, 8B, 8E, 8C

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 1,303 (1,303 by airframe model, 0 by engine model)
- Makers: Luscombe 1,301, Luscombe/Ranger Avia 1, Luscombe/Wilder 1

Models with the most aircraft:

- [Luscombe 8A](https://openairdocs.org/model/luscombe-8a): 897 aircraft (airframe model)
- [Luscombe 8E](https://openairdocs.org/model/luscombe-8e): 326 aircraft (airframe model)
- [Luscombe 8C](https://openairdocs.org/model/luscombe-8c): 37 aircraft (airframe model)
- [Luscombe 8B](https://openairdocs.org/model/luscombe-8b): 16 aircraft (airframe model)
- [Luscombe 8D](https://openairdocs.org/model/luscombe-8d): 14 aircraft (airframe model)
- [Luscombe 8](https://openairdocs.org/model/luscombe-8): 11 aircraft (airframe model)
- [Luscombe/Wilder 8A](https://openairdocs.org/model/luscombe-wilder-8a): 1 aircraft (airframe model)
- [Luscombe/Ranger Avia 8A](https://openairdocs.org/model/luscombe-ranger-avia-8a): 1 aircraft (airframe model)

All 9 models: https://openairdocs.org/ad/47-10-40/models.md
Every aircraft: https://openairdocs.org/ad/47-10-40/aircraft.md

Its text cites no advisory circulars or STCs.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.