AD 56-19-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 1A | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 2A | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 5A | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 5BA | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 6A | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 6BA | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 7A | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 7AXC | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 8A | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 8AXC | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
Unsafe Condition
The mild steel rivet locking the stud, P/N 4CF.607 to the spindle, P/N 4CF.603ND in the aileron differential pulley assembly has sheared, allowing the spindle to unscrew from the stud to such an extent that it, together with the pulley, was on the point of becoming disengaged from the pulley bracket.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install Dove Modification No. 765, which involves installing a H.T.S. pin for locking the stud on the aileron differential pulley spindle.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
as soon as possible, but not later than October 15, 1956
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
de Havilland Aircraft Co., Ltd., The D.H. 104 Dove Series 1A, D.H. 104 Dove Series 2A, D.H. 104 Dove Series 5A, and other listed series, all serial numbers
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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