AD 55-25-02
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" Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 2A | Airworthiness Directives de Havilland Model 104 "Dove" Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 5A | Airworthiness Directives de Havilland Model 104 "Dove" Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 5BA | Airworthiness Directives de Havilland Model 104 "Dove" Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 6A | Airworthiness Directives de Havilland Model 104 "Dove" Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 6BA | Airworthiness Directives de Havilland Model 104 "Dove" Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 7A | Airworthiness Directives de Havilland Model 104 "Dove" Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 7AXC | Airworthiness Directives de Havilland Model 104 "Dove" Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 8A | Airworthiness Directives de Havilland Model 104 "Dove" Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 8AXC | Airworthiness Directives de Havilland Model 104 "Dove" Aircraft |
Unsafe Condition
Cracks have been found in the left-hand front fin attachment brackets, P/N 4FS.1749 and 4FS.6781, emanating from the top rivet hole in the left row and passing through the flange.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect both front fin attachment brackets for cracks using a magnifying glass after removing the paint. If cracks are found, install new brackets P/N 4FS.9165 L.H. and 4FS.9166 R.H. and secure with 2BA bolts and nuts in the top six holes, using rivets in other positions. Repetitive inspections are required at each check II (approximately 100-hour periods) until new brackets are installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
as soon as practical, but not later than the next 25 hours operation
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Affected Aircraft
de Havilland Model 104 'Dove' Aircraft, including Series 1A, 2A, 5A, and others as listed, with front fin attachment brackets P/N 4FS.1749 or 4FS.6781.
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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