AD 66-20-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 1A | Airworthiness Directives; Hawker Siddeley de Havilland Model 104 Dove Series Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 2A | Airworthiness Directives; Hawker Siddeley de Havilland Model 104 Dove Series Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 5A | Airworthiness Directives; Hawker Siddeley de Havilland Model 104 Dove Series Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 5BA | Airworthiness Directives; Hawker Siddeley de Havilland Model 104 Dove Series Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 6A | Airworthiness Directives; Hawker Siddeley de Havilland Model 104 Dove Series Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 6BA | Airworthiness Directives; Hawker Siddeley de Havilland Model 104 Dove Series Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 7A | Airworthiness Directives; Hawker Siddeley de Havilland Model 104 Dove Series Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 7AXC | Airworthiness Directives; Hawker Siddeley de Havilland Model 104 Dove Series Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 8A | Airworthiness Directives; Hawker Siddeley de Havilland Model 104 Dove Series Airplanes |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 8AXC | Airworthiness Directives; Hawker Siddeley de Havilland Model 104 Dove Series Airplanes |
Unsafe Condition
The absence of 0.25 inch diameter radial holes in the engine air intake fire extinguishing system nozzle assembly (P/N P.117) and improper installation of fire extinguisher bottles and flexible hoses may prevent effective fire suppression, leading to potential engine fire hazards.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect and replace nozzle jets without 0.25 inch diameter radial holes with P/N P.117e. Inspect and replace improper fire extinguisher bottles and flexible hoses per Hawker Siddeley Technical News Sheet CT (104) No. 196 or FAA-approved equivalent.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 100 hours' time in service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
de Havilland Model 104 Dove Series Airplanes equipped with an engine fire extinguisher system.
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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